Due to the lack of efficient and cost-effective circuit breaker technology in the past, DCs cannot be used in distribution networks such as data centers, photovoltaic (solar power) and telecommunications systems, or internal grids for aerospace and transportation, electric vehicles and railway technology. The field has the greatest effect. Currently, the only electromechanical power circuit breakers can generate arcs when switching between DC and voltage, and are slow, heavy, difficult to use, and expensive. The NEST-DC research program is funded by the German Ministry of Education and Research (BMBF) to develop innovative semiconductor and fully electronic circuit breakers for DC grids and applications. In addition to being able to turn on DC power, the new circuit breakers are able to quickly and safely shut down at up to 1,500V. The "NEST-DC" research program is designed to develop innovative semiconductor and fully electronic circuit breakers for DC grids and applications. In addition, NEST-DC will also develop innovative semiconductor components, such as overcurrent interrupted field effect transistors (OCB-FETs), etc., as well as circuit breakers using OCB-FETs, with new architecture and connection technology and switching extensions. Park plans and tests. The research results will be applied to aerospace internal power grids, electric mobility, photovoltaic (solar power generation), and DC distribution networks. NEST-DC project member duties NEST-DC project members span the entire value creation chain from semiconductor wafer to DC grid system, including the Institute of Motor Drive and Power Electronics and Devices (IALB) at Bremen University, Germany, and Airbus Group, ETA Elektrotechnische Apparate 4 companies from Siemens AG and Infineon Technologies AG (planning coordination). In addition, the European Power Electronics Centre (ECPE), based in Neubiberg, Germany, also provides support. In this program, IALB is responsible for investigating and simulating the new semiconductor structures used in OCB-FETs, the static and dynamic measurements of newly developed circuit breakers, and the heat dissipation and collapse limits of test equipment. The Airbus Group is responsible for defining the needs of aerospace applications, researching appropriate topologies, and developing application demonstrations with NEST-DC members. The Airbus Group will conduct hardware testing in Ottobrunn, Germany. Siemens will focus on the structure and connection technology of circuit breakers. ETA Elektrotechnische Apparate will define the needs of industrial applications and work with project members to verify circuit breakers up to 1,500V. Infineon is responsible for leading the program, contributing expertise in power semiconductors and researching power semiconductors for OCB-FETs. The NEST-DC Research Project is funded by the BMFF for approximately 2.3 million Euros to fund the development of "Energy Efficiency Electric Power". The plan began in October 2013 for a period of three years. NEST-DC is a German abbreviation meaning “an innovative electronic DC circuit breaker for renewable energy and the internal gridâ€. LED Uunderground light,Outdoor waterproof underground lamp,Underwater Luminaires for swimming pools Kindwin Technology (H.K.) Limited , https://www.szktlled.com
Basic research on DC grid breaker technology
Compared with the traditional AC power currently used, DC has more advantages. For example, the power consumption of the power grid and electronic devices will be reduced by 5% to 7% compared with the AC power, and the power can be sent to the power grid and energy storage from the regeneration source more effectively. At the same time, the stability of the grid is improved; the use of DC power can also create a more compact electronic device.