Title :
PWM voltage and current control of four-leg VSI
Author :
Ali, Salem M. ; Kazmierkowski, Marian P.
Author_Institution :
Inst. of Control & Ind. Electron., Warsaw Univ. of Technol., Poland
Abstract :
In the paper, two control methods of a four-leg three-phase invertor for UPS and active filter applications are discussed. The inverter output voltage is represented as a three-dimensional space vector. Two PWM schemes are investigated: open loop sinusoidal PWM; and feedback multilevel hysteresis PWM current control. Some simulated figures and experimental oscillograms illustrating the properties of the both presented PWM methods are given
Keywords :
DC-AC power convertors; PWM invertors; active filters; control system analysis; control system synthesis; electric current control; feedback; power filters; uninterruptible power supplies; voltage control; PWM schemes; UPS; active filter; applications; control design; control performance; control simulation; current control schemes; feedback multilevel hysteresis PWM; four-leg VSI; inverter output voltage; open loop sinusoidal PWM; three-dimensional space vector representation; voltage control schemes; voltage-source invertor; Bridge circuits; Capacitors; Current control; Leg; Pulse width modulation; Pulse width modulation inverters; Space technology; Switches; Switching circuits; Voltage;
Conference_Titel :
Industrial Electronics, 1998. Proceedings. ISIE '98. IEEE International Symposium on
Conference_Location :
Pretoria
Print_ISBN :
0-7803-4756-0
DOI :
10.1109/ISIE.1998.707776
