Power Supply Inverted By IGBT Of Light Adjustment With Constant Current For Voyage Aid Of The Airport

This paper presents the construction, fundamental working principle as well as the design procedure of a 30KVA power supply inverted by IGBT of light adjustment with constant current for voyage aid of the airport.As a part of the project- "UPS system for voyage aid of the airport", the power supply which takes place of SCR with IGBT and uses the technology of "PWM" and "SPWM" presents constant current for voyage aid.This paper makes a detailed analysis as to the fundamental circuits and fundamental principles of Boost DC-DC converter, SPWM inverter and AC voltage adjustment circuit in the power supply. At the same time, the paper introduces the choice of the parameters and the design of control.In the other, the paper analyses the working procedure and the working principle of the Snubber circuit of the power supply in detail, and presents the basis and the method as to the choice of parameters of the Snubber circuit.In the end, the paper gives the technology parameters of running test.