Preface
Electricity, from being discovered, to being widely used as "electricity" and "electrical energy", people have come a long way. One of the most important strokes is the "route dispute" between AC and DC, and the protagonists are two geniuses of the time, Edison and Tesla. However, it is interesting that from the perspective of the new human beings in the 21st century, this "debate" has not been completely won or lost.
Although the current power generation source and power transportation system are basically "alternating current", direct current is blooming everywhere in many electrical appliances and terminal equipment fields. In particular, the "whole house DC" power system solution, which has been favored by everyone in recent years, combines Internet of Things engineering technology and artificial intelligence to provide a strong guarantee for "smart home life". Let's follow the charging head network to learn more about what is whole-house DC.
Background
Direct Current (DC) is an electrical system that uses direct current power in homes and buildings. The concept of "whole-house DC" is proposed in the context of the increasingly obvious shortcomings of the traditional AC system and the increasing importance of the concept of low-carbon environmental protection.
Conventional alternating current systems
At present, the most common power system in the world is still the alternating current system. An alternating current system is a system of power transmission and distribution that works on the basis of a change in current caused by the interaction of electric and magnetic fields. Here are the main steps of how an alternating current system works:
Generators: The starting point of the power system is the generator. A generator is a device that converts mechanical energy into electrical energy. The basic principle is to create an induced electromotive force by cutting the wire by rotating the magnetic field. In alternating current systems, synchronous generators are usually used, and their rotors are driven by mechanical energy sources (such as hydro, gas, steam, etc.) to generate a rotating magnetic field.
Alternating current generation: The rotating magnetic field in the generator causes a change in the induced electromotive force in the electrical wire, resulting in an alternating current. The frequency of alternating currents is usually 50 Hz or 60 Hz per second, depending on the power system standards in different regions.
Transformer boost: AC power passes through a transformer in the transmission line. A transformer is a device that uses the principle of electromagnetic induction to change the voltage of an electric current without changing its frequency. In power delivery, high-voltage alternating current is easier to transmit over long distances, as this reduces energy loss due to resistance.
Transmission and distribution: High-voltage alternating current is transmitted to various places through transmission lines, and then passed through transformers for step-down to meet the needs of different uses. Such transmission and distribution systems allow for the efficient transmission and utilization of electrical energy between different uses and locations.
Applications of alternating current: On the end-user side, alternating current is supplied to homes, businesses, and industrial facilities. In these places, alternating current is used to drive a variety of devices, including lighting, electric heaters, electric motors, electronics, and more.
In general, the alternating current system became the mainstream at the end of the last century due to the stability and controllability of the alternating power system and the lower power loss on the line. However, with the progress of science and technology, the power angle balance problem of alternating current system has become acute, and the development of power system has led to the emergence of many power devices such as rectifier (converting alternating current into direct current) and inverter (converting direct current into alternating current). The control technology of the converter valve has also entered a fairly clear point, and the speed of cutting off the DC power is no less than that of the AC circuit breaker.
This makes many shortcomings of the DC system slowly disappear, and the technical foundation of the whole house DC is conditional.
Environmental protection and low-carbon concept
In recent years, with the global climate problem, especially the manifestation of the greenhouse effect, environmental protection issues have also been paid more and more attention. Because the whole house DC can be better compatible with renewable energy systems, it has a very prominent advantage in energy conservation and emission reduction. Therefore, it is also being paid more and more attention.
In addition, the DC system can save a lot of devices and materials due to the "direct-to-direct" circuit structure, which is also very in line with the concept of "low-carbon and environmental protection".
Whole house intelligence
conception
The basis for the application of whole-house DC is the application and promotion of whole-house intelligence. That is to say, the application of DC system in the room is basically based on intelligence, and it is used as an important means to empower the "whole house intelligence".
Smart home refers to the use of advanced technology and intelligent systems to connect various home devices, appliances and systems together to achieve centralized control, automation and remote monitoring, so as to improve the convenience, comfort, safety and energy efficiency of home life.
Basic Principles
The implementation principle of a whole-home intelligent system involves a number of key aspects, including sensor technology, smart devices, network communications, intelligent algorithms and control systems, user interfaces, security and privacy protection, and software updates and maintenance. These aspects are discussed in detail below.
Sensor technology
The basis of a whole-house smart system is a variety of sensors that are used to monitor the home environment in real time. Environmental sensors include temperature, humidity, light, and air quality sensors to sense indoor conditions. Motion sensors and magnetic sensors are used to detect human movement and door and window status, providing basic data for security and automation. Smoke and gas sensors are used to monitor fires and harmful gases to improve home safety.
Smart devices
All kinds of smart devices form the core of the whole house intelligent system. Smart lights, home appliances, door locks, and cameras can all be remotely controlled over the network. These devices are connected to a unified network through wireless communication technologies such as Wi-Fi, Bluetooth, Zigbee, allowing users to control and monitor home devices over the internet anytime, anywhere.
Network Communications
The devices of the whole house intelligent system are connected through the Internet to form an intelligent ecosystem. Network communication technology ensures that devices can work together seamlessly while providing the convenience of remote control. Through cloud services, users can remotely access home systems to monitor and remotely control the status of equipment.
Intelligent algorithms and control systems
Using artificial intelligence and machine Xi algorithms, the whole house intelligent system can intelligently analyze and process the data collected by the sensors. These algorithms enable the system to learn Xi user's Xi, automatically adjust the working status of the equipment, and realize intelligent decision-making and control. The setting of scheduled tasks and trigger conditions enables the system to automatically execute tasks in specific situations, increasing the level of automation of the system.
UI
In order to make it easier for users to operate the whole house intelligent system, a variety of user interfaces are provided, including mobile phone applications, tablet or computer interfaces. Through these interfaces, users can conveniently control and monitor home devices remotely. In addition, voice control allows users to control smart devices through voice commands through the application of voice assistants.
Advantages of DC in the whole house
The advantages of DC systems in the home are numerous, which can be summarized in three aspects: high transmission efficiency, high integration of renewable energy, and high device compatibility.
energy efficiency
First of all, in indoor circuits, the power equipment used is often low voltage, direct current does not need frequent voltage transformation, and the reduction of transformer use can effectively reduce energy loss.
Secondly, the loss of wires and wires during the transmission of direct current is relatively small. Because the resistance loss of direct current does not change with the direction of the current, it can be controlled and reduced more effectively. This enables direct current to exhibit high energy efficiency in certain scenarios, such as short-distance transmission and local power supply systems.
Finally, with the development of technology, some new electronic converters and modulation techniques have been introduced, which have improved the energy efficiency of DC systems. High-efficiency electronic converters can reduce the loss of energy conversion and further improve the overall energy efficiency of the DC system.
Renewable energy integration
In the whole house intelligent system, renewable energy will also be introduced, and through renewable energy conversion into electricity, it can not only implement the concept of environmental protection, but also make full use of the structure and space of the house to ensure energy supply. In contrast, DC systems are easier to integrate with renewable energy sources such as solar and wind power.
Device compatibility
The DC system is more compatible with indoor electrical equipment. At present, many devices such as LED lights, air conditioners, etc. are DC driven. This means that the DC system is easier to control and manage intelligently. Through advanced electronic technology, the operation of DC equipment can be controlled more finely and intelligent energy management can be realized.
Fields of application
Many of the advantages of the DC system just mentioned can only be perfectly demonstrated in certain areas. These areas are the indoor environment, which is why the whole house DC can shine in today's indoor field.
Residential buildings
In residential buildings, whole-house DC systems can provide efficient energy for electrical equipment in a variety of ways. Lighting systems are a significant application area, and DC-powered LED lighting systems can reduce energy conversion losses and improve energy efficiency.
In addition, DC power supplies can also be used to power home electronic devices, such as computers, mobile phone chargers, etc., which are DC devices themselves without going through additional energy conversion steps.
Commercial buildings
Offices and commercial facilities in commercial buildings can also benefit from whole-house DC systems. DC power supply for office equipment and lighting systems helps to improve energy efficiency and reduce energy waste.
Some commercial appliances and equipment, especially those that require DC power, can also work more efficiently, improving the overall energy efficiency of commercial buildings.
Industrial applications
In the industrial sector, whole-house DC systems can be used in production line equipment and electric vehicle rooms. Some industrial equipment uses direct current power, and the use of DC power can improve energy efficiency and reduce energy waste. This is especially evident in the use of power tools and workshop equipment.
EV charging and energy storage systems
In the field of transportation, DC systems can be used to charge electric vehicles to improve charging efficiency. In addition, the whole-house DC system can also be integrated into the battery energy storage system to provide efficient energy storage solutions for households and further improve energy efficiency.
Information technology and communications
In the field of information technology and communications, data centers and communication base stations are ideal application scenarios for whole-house DC systems. Since many of the devices and servers in the data center are powered by DC, DC systems help improve the performance of the entire data center. Similarly, communication base stations and equipment can also use DC power to improve the energy efficiency of the system and reduce the dependence on the traditional power system.
Composition of the whole house DC system
Generally speaking, the whole house DC system can be divided into four parts: DC power generation, tributary energy storage system, DC distribution system, and tributary electrical equipment.
DC power generation
In the DC system, the starting point is the DC power generation, which is different from the traditional alternating power system, and the DC power generation source of the whole house DC generally does not rely entirely on the inverter to convert the alternating current into direct current, but will choose external renewable energy as the only or main energy supply.
For example, a layer of solar panels will be laid on the exterior wall of the building, and the light will be converted into direct current by the panels, which can then be stored in the DC distribution system or directly transmitted to the end equipment application, or small wind turbines can be built on the exterior wall or roof of the building to convert direct current. Wind power and solar power are currently the mainstream DC power sources, and there may be others in the future, but they all need converters to turn into direct current.
DC energy storage system
Generally speaking, the DC power generated by the DC power generation power supply will not be directly transmitted to the terminal equipment, but will be stored in the DC energy storage system, and the current will be released from the DC energy storage system to supply power to the room when the equipment has power demand.
The DC energy storage system is like a reservoir, which receives the electric energy converted by the DC power generation source and continuously transmits the electric energy to the terminal equipment. It is worth mentioning that because the DC power source and the DC energy storage system are DC transmission, the use of inverters and many devices can be reduced, which not only reduces the cost of circuit design, but also improves the stability of the system.
Therefore, the DC energy storage system of the whole house is closer to the DC charging module of new energy vehicles, rather than the traditional "DC coupled solar system".
As shown in the figure above, the traditional "DC-coupled solar system" needs to transmit current to the grid, so there are more modules after solar inverter, while the "DC-coupled solar system" of the whole house DC does not require inverters and step-up transformers and other components, which is highly efficient and high-energy.
DC power distribution system
At the heart of a whole-house DC system is the DC power distribution system, which plays a key role in a home, building, or other facility. This system is responsible for distributing power from the source to various terminal equipment, realizing the power supply of all parts of the house.
function
Energy distribution: The DC distribution system is responsible for distributing electrical energy from energy sources (such as solar panels, energy storage systems, etc.) to various electrical devices in the home, including lighting, appliances, electronic equipment, etc.
Improved energy efficiency: With DC distribution, energy conversion losses can be reduced, thereby improving the energy efficiency of the entire system. Especially when integrated with DC equipment and renewable energy sources, it is possible to use electrical energy more efficiently.
Support for DC devices: One of the keys to a whole-house DC system is to support the power supply of DC devices, avoiding the energy loss of converting AC power to DC power.
constitute
DC switchboard: A DC switchboard is a critical piece of equipment that distributes electrical energy from solar panels and energy storage systems to various circuits and devices in a home. It includes components such as DC circuit breakers, voltage stabilizers, etc., to ensure the stable and reliable distribution of electrical energy.
Intelligent control system: In order to realize the intelligent management and control of energy, the whole house DC system is usually equipped with an intelligent control system. This can include features such as energy monitoring, remote control, and automated scene setting to improve the overall efficiency of the system.
DC Sockets and Switches: To be compatible with DC devices, outlets and switches in the home need to be designed as DC interfaces. These outlets and switches can be used by DC devices while ensuring safety and convenience.
DC electrical equipment
There are a lot of DC electrical devices in the room, and it is impossible to list them all here, so they can only be roughly categorized. Before we do that, we need to understand what kind of equipment needs to use AC power and what needs DC power. Generally speaking, high-power appliances require a higher voltage and are equipped with high-load motors, such as refrigerators, old-fashioned air conditioners, washing machines, range hoods, etc.
There are also some electrical equipment, which do not need to be driven by high-power motors, and the integrated circuit precision can only operate in medium and low voltages, and will use direct current for energy supply, such as: TV, computer, tape recorder.
Of course, the above distinction is not very comprehensive, at present, many high-power electrical appliances can also be DC power supply, such as the emergence of DC inverter air conditioners, the use of more silent effect, more energy-saving DC motors. In general, the specific AC or DC power equipment depends on the internal device structure.
A practical example of whole-house DC
Here are some examples of "whole-house DC" from around the world. It can be found that these cases are basically low-carbon environmental protection theme schemes, indicating that the main driving force of "whole house DC" is still the concept of environmental protection, and the intelligent DC system still has a long way to go.
瑞典零排放房屋项目（The Zero Emission House in Sweden）
The project, driven by Swedish construction company Viktoriahus AB, utilizes solar panels and a DC power supply system to achieve zero emissions. The house is fully powered by a DC system, including DC lights and appliances, as well as DC batteries for storing solar energy.
New energy construction project in Zhongguancun Demonstration Zone
The Zhongguancun New Energy Building Project is a demonstration project promoted by the Chaoyang District Government of Beijing, China, to promote green buildings and the use of renewable energy. In this project, some buildings have adopted whole-house DC systems, which are combined with solar panels and energy storage systems to achieve DC power supply. This attempt aims to reduce the environmental impact of buildings and improve energy efficiency by integrating new energy sources and DC power supply.
Sustainable Energy Residential Project at Expo Dubai 2020, UAE
At Expo 2020 in Dubai, some projects showcased sustainable energy homes using renewable energy and whole-house DC systems. These projects aim to improve energy efficiency through innovative energy solutions.
Japan DC Microgrid Experimental Project
In Japan, some microgrid pilot projects have begun to adopt whole-house DC systems. These systems are powered by solar and wind power, while implementing DC power to appliances and equipment in the home.
英国伦敦零能耗住宅（The Energy Hub House）
The project, a collaboration between London South Bank University and the UK's National Physical Laboratory, aims to create a zero-energy home. The residence uses DC power supply, combined with solar photovoltaic and energy storage systems to achieve efficient use of energy.
Relevant industry associations
The technology of whole-house intelligence has been introduced to you before, in fact, behind the technology are some industry associations in support. The charging head network has counted the relevant associations in the industry, and here is an introduction to the associations related to the whole house DC.
charge
FCA
FCA (Fast Charging Alliance), Chinese name "Guangdong Terminal Fast Charging Industry Association". Guangdong Terminal Fast Charging Industry Association (hereinafter referred to as Terminal Fast Charging Industry Association) was established in 2021. Under the development trend of global carbon neutrality, terminal fast charging can help reduce e-waste and energy waste, achieve green environmental protection and sustainable development of the industry, and bring a safer and more reliable charging experience to hundreds of millions of consumers.
In order to accelerate the standardization and industrialization of terminal fast charging technology, the Academy of Information and Communications Technology, Huawei, OPPO, vivo, and Xiaomi took the lead, and all parties involved in the terminal fast charging industry chain such as internal machines, chips, instruments, chargers, and accessories began to prepare for the construction in early 2021. The establishment of the association is of vital significance for building a community of interests in the industrial chain, building an industrial base for terminal fast charging design, R&D, manufacturing, testing and certification, driving the development of core electronic components, high-end general chips, key basic materials and other fields, and striving to build a world-class terminal fast red innovative industrial cluster.
FCA mainly promotes the UFCS standard, UFCS full name Universal Fast Charging Specification, Chinese name fusion fast charging standard. It is a new generation of converged fast charging protocol led by the Academy of Information and Communications Technology, Huawei, OPPO, vivo, and Xiaomi, and jointly completed by a number of terminals, chip companies and industry partners such as Silergy Corp., Rockchip, Lihui Technology, and Anbao Electronics. The protocol aims to develop a converged fast charging standard for mobile terminals, solve the problem of incompatibility of intermatched fast charging, and create a fast, safe and compatible charging environment for end users.
At present, UFCS has held the second UFCS test conference, in which the "pre-test of compliance functions of member companies" and "compatibility test of terminal manufacturers" have been completed. Through testing and summary exchanges, synchronously combining theory and practice, it aims to break the incompatible situation of fast charging, jointly promote the benign development of terminal fast charging, and work with many high-quality suppliers and service providers in the industrial chain to jointly promote the process of industrialization of UFCS fast charging technology standards.
官网地址：终端快充行业协会 Fast Charging Alliance
USB-IF
Founded in 1994 by Intel and Microsoft, the International Organization for Standardization, or USB-IF, is a non-profit corporation founded by a group of companies developing a universal serial bus specification. USB-IF was established to provide a support organization and forum for the development and adoption of universal serial bus technology. The forum promotes the development of high-quality compatible USB peripherals (devices) and promotes the benefits of USB and the quality of products that pass compliance testing.
The latest version of the technical specification is USB4 2.0, which increases the maximum speed to 80Gbps, adopts a new data architecture, and the USB PD fast charging standard, USB Type-C interface and cable standard will also be updated.
Official website address: USB News |USB-IF
WPC
WPC is the full name of Wireless Power Consortium, Chinese name "Wireless Power Alliance", founded on December 17, 2008, is the world's first standardization organization to promote wireless charging technology. As of May 2023, WPC has a total of 315 members, and the members of the alliance are working together with a common goal: to achieve full compatibility of all wireless chargers and wireless power sources worldwide. To this end, they have developed a number of specifications for wireless fast charging technology.
As wireless charging technology continues to evolve, its application has expanded from consumer handheld devices to many new areas, such as laptops, tablets, drones, robots, connected cars, and smart wireless kitchens. WPC develops and maintains a range of standards for a wide variety of wireless charging applications, including:
Qi standard for smartphones and other portable mobile devices.
The Ki wireless kitchen standard, for kitchen appliances, can support up to 2200W charging power.
The Light Electric Vehicle (LEV) standard, which makes wireless charging of light electric vehicles such as e-bikes and scooters faster, safer, smarter and more convenient at home and on the go.
An industrial wireless charging standard for safe and convenient wireless power transfer to charge robots, AGVs, drones, and other industrial automation machinery.
There are now more than 9,000 Qi-certified wireless charging products on the market. WPC verifies the safety, interoperability and suitability of products through its independent and authorized testing laboratories around the world.
communication
CSA
The Connectivity Standards Alliance (CSA) is an organization that develops, certifies, and promotes the Matter standard for smart homes. Its predecessor was the Zigbee Alliance, which was founded in 2002. In October 2022, the number of members of the alliance reached more than 200.
CSA provides IoT innovators with standards, tools, and certifications to make IoT more accessible, secure, and usable1. The organization is dedicated to defining and increasing the industry's awareness and holistic development of security best practices for cloud computing and next-generation digital technologies. CSA-IoT brings together the world's leading companies to create and promote common open standards such as Matter, Zigbee, IP, and more, as well as standards in areas such as product security, data privacy, smart access control, and more.
Zigbee is the Internet of Things connectivity standard introduced by the CSA Alliance, a wireless communication protocol designed for wireless sensor network (WSN) and Internet of Things (IoT) applications. It uses the IEEE 802.15.4 standard and operates in the 2.4 GHz band, with a primary focus on low power, low complexity, and short-range communications. Driven by the CSA Alliance, the protocol has been widely used in smart homes, industrial automation, healthcare, and other fields.
One of Zigbee's design goals is to support reliable communication between a large number of devices while maintaining low power consumption levels. It is suitable for devices that need to operate for long periods of time and rely on battery power, such as sensor nodes. The protocol's topology is diverse, including star, mesh, and cluster trees, making it adaptable to networks of different sizes and needs.
Zigbee devices are able to automatically form a self-organizing network, making them flexible and adaptable, dynamically adapting to changes in network topology, such as the addition or removal of devices. This makes Zigbee easier to deploy and maintain in real-world applications. Overall, Zigbee, as an open standard wireless communication protocol, provides a reliable solution for connecting and controlling a wide range of IoT devices.
Bluetooth SIG
In 1996, Ericsson, Nokia, Toshiba, IBM and Intel Corporation planned to set up an industry association, the "Bluetooth SIG", which was the "Bluetooth SIG", and they jointly developed a short-range wireless connection technology. Hence the name Bluetooth for this technology.
Bluetooth technology is a short-range, low-power wireless communication standard for a wide range of devices to connect and transmit data, with easy pairing, multi-point connectivity, and basic security features.
Bluetooth technology is an important part of wireless communication technology because it can provide wireless connectivity to devices in the house.
Sparklink Association
On September 22, 2020, the Sparklink Association was officially established. The goal is to promote the innovation and industrial ecology of SparkLink, a next-generation wireless short-range communication technology, to carry fast-growing new scenario applications such as smart cars, smart homes, smart terminals, and smart manufacturing, and to meet extreme performance requirements. At present, the association has more than 140 members.
The wireless short-range communication technology promoted by the Sparklink Association is called SparkLink, which is known as Starlink in Chinese. The technical characteristics are ultra-low latency and ultra-high reliability. It relies on the ultra-short frame structure, Polar codec and HARQ retransmission mechanism. SparkLink achieves a latency of 20.833 microseconds and a reliability of 99.999%.
Wi-Fi Alliance
The Wi-Fi Alliance is an international organization of technology companies dedicated to advancing and promoting the development, innovation, and standardization of wireless network technologies. The organization was founded in 1999 with the main goal of promoting the widespread use of wireless networks by ensuring that Wi-Fi devices from different vendors are compatible with each other.
Wi-Fi technology (Wireless Fidelity) is a wireless LAN technology used to transmit and communicate data between electronic devices through wireless signals. It allows devices (such as computers, smartphones, tablets, smart home devices, etc.) to exchange data to a limited extent without the need for a physical connection.
Wi-Fi-free technology establishes connections between devices through radio waves. This wireless nature eliminates the need for a physical connection, allowing devices to move freely within a range while maintaining a network connection. Wi-Fi technology uses different frequency bands to transmit data. The most commonly used frequency bands include 2.4GHz and 5GHz. These frequency bands are divided into multiple channels in which devices can communicate.
The speed of Wi-Fi technology depends on the standard and frequency band. With the continuous development of technology, Wi-Fi speeds have gradually increased from hundreds of kbps (kilobits per second) to several gbps (gigabits per second) now. Different Wi-Fi standards (such as 802.11n, 802.11ac, 802.11ax, etc.) support different maximum transmission rates. In addition, the security of data transmission is protected by encryption and security protocols. Among them, WPA2 (Wi-Fi Protected Access 2) and WPA3 are common encryption standards used to protect Wi-Fi networks from unauthorized access and data theft.
Trends
Developmental disabilities
Standardization and building codes
A major obstacle to the development of whole-house DC systems is the lack of globally harmonized standards and building codes. Traditional building electrical systems typically use alternating current, so whole-house DC systems need to establish a new set of standards in design, installation, and operation.
Lack of standardization can lead to incompatibilities between different systems, increasing the complexity of device selection and replacement, while also potentially hindering the scale and adoption of the market. Adaptation to building codes is also a challenge, as the construction industry is often based on traditional alternating current designs. As a result, the introduction of whole-home DC systems may require adjustments and redefinition of building codes, which will take time and a concerted effort.
Economic costs and technology transfers
The deployment of a whole-home DC system can involve higher initial costs, including more advanced DC equipment, battery energy storage systems, and DC-adapted appliances. These additional costs may be one of the reasons why many consumers and building developers are hesitant to adopt whole-home DC systems.
In addition, traditional AC equipment and infrastructure are so mature and ubiquitous that switching to a whole-house DC system requires a massive technology transition, which involves redesigning the electrical layout, replacing equipment, and training personnel. This shift can result in additional investment and labor costs for existing buildings and infrastructure, limiting the speed at which whole-home DC systems can be rolled out.
Device compatibility and market access
Whole-home DC systems need to get more device compatibility in the market to ensure that all kinds of appliances, lighting, and other devices in the home can run smoothly. At present, many devices on the market are still dominated by AC power, and the promotion of whole-home DC systems requires cooperation with manufacturers and suppliers to promote more DC-compatible devices into the market.
It also needs to work in tandem with energy suppliers and power networks to ensure effective integration of renewables and interconnection with traditional power grids. The issue of equipment compatibility and market access may affect the wide application of whole-house DC systems, and more consensus and cooperation in the industry chain are needed.
Direction of development
Smart and sustainable
One of the future development directions of whole-house DC systems is to place more emphasis on intelligence and sustainability. By integrating the intelligent control system, the whole-house DC system can more accurately monitor and manage power usage, enabling customized energy management strategies. This means that the system can dynamically adjust to maximize energy efficiency and reduce energy costs based on household demand, electricity prices, and the availability of renewable energy.
At the same time, the sustainable development direction of whole-house DC systems involves a wider integration of renewable energy, including solar, wind, etc., as well as more efficient energy storage technologies. This will help build a greener, smarter and more sustainable home power system, and drive the development of whole-house DC systems in the future.
Standardization and industrial cooperation
In order to promote the wider application of whole-house DC systems, another development direction is to strengthen standardization and industry cooperation. Establishing globally harmonized standards and specifications can reduce the cost of system design and implementation, improve equipment compatibility, and thus drive the expansion of the market size.
In addition, industrial cooperation is also a key factor in promoting the development of whole-house DC systems. Players at all stages, including builders, electrical engineers, equipment manufacturers, and energy suppliers, need to work together to form a full-chain industrial ecosystem. This helps address device compatibility, improve system stability, and drive technological innovation. Through standardization and industry cooperation, whole-house DC systems are expected to be more smoothly integrated into mainstream buildings and power systems, and achieve a wider range of applications.
Summary of the charging head network
Whole-house DC is an emerging power distribution system that, unlike traditional AC systems, applies DC power to the entire building, covering everything from lighting to electronics. Whole-home DC systems offer some unique advantages over traditional systems in terms of energy efficiency, renewable energy integration, and equipment compatibility. First of all, by reducing the steps of energy conversion, the whole house DC system can improve energy efficiency and reduce energy waste. Second, DC power is easier to integrate with renewable energy devices such as solar panels, providing a more sustainable power solution for buildings. In addition, for many DC equipment, the use of a whole-house DC system can reduce energy conversion losses and improve the performance and life of the equipment.
Whole-home DC systems are used in a variety of fields, including residential buildings, commercial buildings, industrial applications, renewable energy systems, e-mobility, and more. In residential buildings, whole-house DC systems can be used to efficiently power lighting and appliances to improve home energy efficiency. In commercial buildings, DC power supply for office equipment and lighting systems helps to reduce energy consumption. In the industrial sector, whole-house DC systems can improve the energy efficiency of production line equipment. Among renewable energy systems, whole-house DC systems are easier to integrate with devices such as solar and wind energy. In the field of e-mobility, DC power distribution systems can be used to charge electric vehicles and improve charging efficiency. The continuous expansion of these application areas indicates that whole-house DC systems will become a viable and efficient option for buildings and power systems in the future.