Title :
Improved current control technique for VSI PWM inverters with constant modulation frequency and extended voltage range
Author :
Malesani, Luigi ; Tenti, Paolo ; Gaio, Elena ; Piovan, Roberto
Author_Institution :
Dept. of Electr. Eng., Padova Univ., Italy
Abstract :
A hysteresis control method for three-phase, current-controlled, PWM voltage-source-inverters (VSIs) is presented. The inverters are characterized by constant switching frequency. The method is based on a phase-interference minimization technique presented by the authors previously (1987) but avoids the need to know the load parameters. It minimizes the commutation losses and current ripple, while allowing maximum output AC voltage to be obtained from the inverter. The method exhibits all the favorable characteristics of hysteresis controls: fast response, good accuracy, and robustness.<>
Keywords :
electric current control; invertors; pulse width modulation; VSI PWM inverters; commutation losses; constant modulation frequency; constant switching frequency; current control technique; current ripple; extended voltage range; hysteresis control method; phase-interference minimization technique; three-phase; Current control; Hysteresis; Minimization methods; Pulse width modulation; Pulse width modulation inverters; Robust control; Switching frequency; Voltage control;
Conference_Titel :
Industry Applications Society Annual Meeting, 1988., Conference Record of the 1988 IEEE
Conference_Location :
Pittsburgh, PA, USA
DOI :
10.1109/IAS.1988.25142
