전력전자학회:학술대회논문집 (Proceedings of the KIPE Conference)
- 전력전자학회 2012년도 추계학술대회 논문집
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- Pages.211-212
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- 2012
Observer Method for Three-Phase Current Estimation in PWM Inverters Using a single Sensor
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Kim, Hyung-Seop
(Department of Electrical Engineering, Pusan University)
;
- Im, Won-Sang (Department of Electrical Engineering, Pusan University) ;
- Ku, Hyun-Keun (Department of Electrical Engineering, Pusan University) ;
- Kim, Jang-Mok (Department of Electrical Engineering, Pusan University)
- 발행 : 2012.11.23
초록
This paper proposes a single current sensor control technique for controlling motors that use only a single DC-Link current sensing resistor to obtain the information of three line currents. However, the measurement is distorted due to the too narrow current pulse width in the shunt resistor. To solve this problem, the existing phase current reconstruction methods are voltage split methods. They have a disadvantage which makes noise. A new dedicated observer is applied to decrease noise problem. Experimental results showed the effectiveness of the proposed method.
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