Inverter Technology Applications And Research In High Voltage Direct Current Electric Sorting Machine Control System

The stability of voltage and current outputted by HV DC power is important to generate stable high-voltage electric field .It proposed a new high efficiency HV DC power system adopting frequency conversion technology, HV Ji type filter technology v PWM control technology , phase-control commutate technology and so on according to the state -wave range wide and poor stability of the YD-3 type electric separator's in this paper.This system is consist of AC stability, frequency conversion output, HV transistor, HV silicon rectifier, Ji type filter, three HV output and sigh collection feedback control and so on .In this paper the commutate circuit principle and work process of the commutate circuit, the composing and work principle of frequency conversion circuit, main switch element IGBT structure feature turn on and turn-off process dynamic and static switch feature and the work principle of invert were analyzed .PWM control technology , method of generate PWM wave and the frequency of PWM wave were also discussed. The commutate circuit and PWM control method were analysis by Fourier analysis.This system have sensitive control high stability, little output HV DC undulation, high anti-interference. While using this system in PanZhiHua steel company Ti separator factory ,the separate target make a large progress and get a better economic benefit and social profit benefit.