Title :
Current source rectifier/inverter system with sinusoidal currents
Author :
Fukuda, Shoji ; Hasegawa, Hirokazu
Author_Institution :
Dept. of Electr. Eng., Hokkaido Univ., Sapporo, Japan
Abstract :
A description is given of a sinusoidal pulsewidth-modulation (PWM) method for a current-source rectifier and inverter. As the DC current flows continuously, a DC current pass must exist in the rectifier and inverter circuit. Accordingly, the subharmonic method, in which the PWM pulse pattern is produced by comparing a triangular carrier wave with a sinusoidal signal wave, is not acceptable. Instead, a performance function (PF), which takes into account LC filter characteristics inserted into AC lines, is introduced. Then a performance index (PI), which is proportional to the distortion factor of PF, is defined. An optimal PWM pattern can be obtained mathematically by minimizing the PI. The method is implemented using microprocessors and applied to an induction-motor drive system. The basic performance of the rectifier/inverter system is reported.<>
Keywords :
electric drives; induction motors; invertors; pulse width modulation; rectifiers; current-source rectifier; filter characteristics; induction-motor drive; inverter; performance function; performance index; sinusoidal PWM; Circuits; Filters; Microprocessors; Performance analysis; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Rectifiers; Space vector pulse width modulation;
Conference_Titel :
Industry Applications Society Annual Meeting, 1988., Conference Record of the 1988 IEEE
Conference_Location :
Pittsburgh, PA, USA
DOI :
10.1109/IAS.1988.25168
