Title :
Digital control of three phase PWM inverter with L-C filter
Author :
Kawabata, Takao ; Miyashita, Takeshi ; Yamamoto, Yushin
Author_Institution :
Mitsubishi Electr. Co., Kobe, Japan
Abstract :
An algorithm for digital control of a three-phase sinusoidal voltage inverter having an output L-C filter has been developed. The transient of the L-C filter during the discretization time has been taken into account by discretizing the fourth-order matrix state equation of the current and the voltage of the d-q frame and precise discrete equations of the inverter have been introduced. Using these equations, a deadbeat controller consisting of a d-q current minor loop and a d-q voltage major loop, with precise decoupling of the d-q components, has been developed.<>
Keywords :
controllers; digital control; filters; invertors; pulse width modulation; L-C filter; current minor loop; d-q frame; deadbeat controller; digital control; discretization time; fourth-order matrix state equation; sinusoidal voltage inverter; three phase PWM inverter; transient; voltage major loop; AC motors; Control systems; Digital control; Digital filters; Equations; Pulse width modulation inverters; Sampling methods; Switching frequency; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1988. PESC '88 Record., 19th Annual IEEE
Conference_Location :
Kyoto, Japan
DOI :
10.1109/PESC.1988.18190
