Title :
A PWM voltage source inverter with PI controller for instantaneous motor current control
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
Apart from traditional PWM or SPWM voltage source inverters (VSI), the proposed VSI with a proportional integral current controller (PI VSI) offers superiority. They include instantaneous current control and wave shaping, fixed inverter switching frequency independent of the output frequency resulting in only known harmonics, and free-running carrier operation. A modelling approach to proposed PI VSI is introduced. A design example of the VSI power circuitry is presented. The PI controller design is discussed. Finally the VSI load current is verified for harmonic content and instantaneous current control capabilities
Keywords :
PWM invertors; control system analysis; control system synthesis; electric current control; machine control; machine theory; network analysis; network synthesis; power system harmonics; switching circuits; two-term control; PI controller; PWM voltage source inverter; VSI; controller design; free-running carrier operation; harmonics; instantaneous motor current control; inverter switching frequency; load current; modelling; output frequency; wave shaping; Circuits; Current control; Electric current control; Motion control; Pi control; Proportional control; Pulse width modulation; Pulse width modulation inverters; Switching frequency; Voltage control;
Conference_Titel :
Power Electronics and Drive Systems, 1995., Proceedings of 1995 International Conference on
Print_ISBN :
0-7803-2423-4
DOI :
10.1109/PEDS.1995.404961
