Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1999.07f
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- Pages.2656-2658
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- 1999
Voltage Sensorless Control for Three-Phase Voltage Source PWM Converter
3상 전압형 PWM 컨버터의 전압 센서리스 제어
- Heo, Tae-Won (Dong-A Univ.) ;
- Cho, Kwang-Seung (Dong-A Univ.) ;
- Kim, Young-Bin (Dong-A Univ.) ;
- Seo, Jung-Ki (Daeheung Co. Ltd.) ;
- Cho, Yong-Gil (Dong-A Univ.) ;
- Woo, Jung-In (Dong-A Univ.)
- Published : 1999.07.19
Abstract
This paper presents a control scheme for a three-phase PWM converter system without any voltage sensors. Two input currents and one load current are measured. In a general PWM converter system, the required AC input and DC output voltage values in order to control the converter are estimated using the differential equations of the converter from the measured input currents and load current values in the switch modes of the converter circuit. The PI controller is used as DC voltage controller and sinusoidal tracking controller which tracks directly AC input current is used as input current controller. The Proposed method is verified by simulations. This paper describes the estimation method and configuration of the controller, and discusses steady state and transient performances of the converter
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