Title :
Neutral-point balance based on current sensor-less hysteresis control for three-level diode-clamped PWM rectifier
Author :
Fang, Yu ; Xing, Yan ; Ma, Xudong ; Zhang, Fanghua ; Hu, Yuwen
Author_Institution :
Aero-Power Sic-tech Center, Nanjing Univ. of Aeronaut. & Astronaut., Nanjing
Abstract :
The reason why the neutral point voltage fluctuates is analyzed in detail and a current-sensorless hysteresis control strategy proposed. This way to balance the neutral-point voltage is simple and not need of current sensor. Based on small signal control model and neutral-point voltage balanced technique the experimental prototype are given and the experimental results verify that the proposed mathematic is correct and the balance of neutral-point voltage guarantee high power factor of TL-PWM rectifier.
Keywords :
PWM rectifiers; electric current control; hysteresis; power factor; TL-PWM rectifier; current sensorless hysteresis control; neutral-point balancing control; power factor; small signal control model; three-level diode-clamped PWM rectifier; Diodes; Hysteresis; Mathematical model; Mathematics; Prototypes; Pulse width modulation; Reactive power; Rectifiers; Voltage control; Voltage fluctuations;
Conference_Titel :
Power Electronics Specialists Conference, 2008. PESC 2008. IEEE
Conference_Location :
Rhodes
Print_ISBN :
978-1-4244-1667-7
Electronic_ISBN :
0275-9306
DOI :
10.1109/PESC.2008.4592019
