High-end customized power supply

The traction power supply in the vehicle manufacturing plant is reduced from 110kV/10kV transformer to 10kV, and then a 10MVA single-phase step-up transformer for traction provides 25kV single-phase power supply for vehicle test.The main problem of this power supply mode is that there is a large amount of harmonic current in the 10kV bus during vehicle test.The harmonic of 10kV power supply has been tested. The results show that the current distortion rate of 10kV bus is about 50% (THD), and the harmonic frequency mainly includes third, fifth, seventh, 41st and 43th harmonics.During vehicle tests, the switching power supply, numerical control locomotive and other equipment components in the factory are often damaged. The effect of capacitor and inductor resonant harmonic absorption device configured on the 10kV side is not obvious.Traction power supply directly takes power from phase A and B of the power grid, and C gets along in the no-load state, which will cause the three-phase load imbalance of the power grid.

Frequency conversion heating power supply is a new generation heating power supply system successfully developed by the company to meet the metallurgical heating market demand.The power supply system has the advantages of environmental protection, energy saving, multi-purpose and easy operation.

EAST plasma vertical displacement fast control power supply. In April 2006, as the institute of plasma physics of Chinese Academy of Sciences bear the national "863" project of major national scientific research project "- EAST nuclear fusion experimental device (commonly known as" man-made sun "project, 1 litre water extract hydrogen isotopes deuterium, achieve full fusion reaction, releasing energy equivalent to 300 liters of gasoline)" provide corollary equipment: plasma vertical displacement fast control power supply.The equipment was put into operation and was well received by experts of Chinese Academy of Sciences.

In 2016, the "Superconducting Energy Storage - Current Limiting Power Regulation System" developed by the company successfully passed the on-site technical acceptance of the National 863 Program Research Group.The 1MVA/1MJ superconducting energy storage and current limiting system developed by this project is the world's first multifunctional superconducting power device that is actually connected to the grid.This device can effectively solve the problems of unstable power output, large short circuit capacity and high requirement for low voltage crossing ability in renewable energy grid-connected power generation, improve the grid-connected utilization rate of new energy power generation, and create a pioneering application of multi-functional superconducting power device in power grid, especially in wind farm.

Electromagnetic bearing power amplifier.In January 2004, the company was invited by the Institute of Nuclear and New Energy Technology Design and Research of Tsinghua University to participate in the research and development of the electromagnetic bearing system of the 10 MW high-temperature gas-cooled reactor helium direct turbine cycle power generation system (HTR-10GT), a key high-tech research project in the energy field of the National Tenth Five-Year Plan.

Digital motor test power supply is a new generation of motor test power supply system developed successfully by the company to meet the market demand of motor test.The power system has the advantages of environmental protection, energy saving, multi-purpose, convenient operation and so on. It can be used for the factory test and type test of DC motor, common AC asynchronous motor, synchronous motor, frequency conversion motor and other motors.