대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1992년도 하계학술대회 논문집 B
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- Pages.1104-1107
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- 1992
출력 파형 왜율과 효율 개선을 위한 CRPWM의 전압 제어 방법
A New Voltage Control Method in CRPWM for Improving Distortion and Efficiency at Load Side
- Ahn, Sung-Chan (Hyosung Industries Co., Ltd.) ;
- Song, Jhong-Whan (Seoul National University) ;
- Cho, Kyu-Bok (Hyosung Industries Co., Ltd.) ;
- Won, Jhong-Su (Seoul National University)
- 발행 : 1992.07.23
초록
Voltage controlled current regulated PWM(pulse width modulation) of VSI (voltage source inverter) is proposed. Adopting one degree of freedom, the voltage, the current controller shows much more improvement than conventional ones not using this method. The voltage controller or this proposal needs load's parameters, torque value, rotational speed. This voltage controller is located at converter part which links AC source and DC bus. With this proposed method, duty ratio of the inverter's switching is nearly unity for all speed and torque range. Hence, this method gets many advantages such as reducing current ripple, thermal loss, and noises and improving control performances. Theoretical approach to this voltage-current controller is performed, and the results are presented.
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