Proceedings of the KIPE Conference (전력전자학회:학술대회논문집)
- 2001.12a
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- Pages.139-143
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- 2001
Line-Interactive DVR Using Multi-Level H-Bridge Inverter
멀티-레벨 H-Bridge 인버터를 이용한 Line-Interactive DVR
- Kang Dae-Wook (Dept. of Electrical Engineering, Hanyang Univ.) ;
- Woo Sung-Min (Dept. of Electrical Engineering, Hanyang Univ.) ;
- Kim Tae-Jin (Dept. of Electrical Engineering, Hanyang Univ.) ;
- Choi Chang-Ho (R&D Center, POSCON Co. Ltd.) ;
- Hyun Dong-Seok (Dept. of Electrical Engineering, Hanyang Univ.)
- Published : 2001.12.01
Abstract
Recently, the interest on power quality has been hot issue. The equipments cause voltage disturbance and has become more sensitive to the voltage disturbance. This paper deals with 5-Level H-Bridge Line-Inter active Dynamic Voltage Restorer(LIDVR) system. The LIDVR has following advantages in comparison with the DVR with series injection transformer It has the power factor near to unity under normal source voltage, can compensate the harmonic current of the load and the instant interruption, and has the fast response. First, the construction, the operation mode and algebraic modeling of LIDVR are reviewed. And then a voltage controller is proposed to get sinusoidal load voltage with constant amplitude. To find PWM method suitable for H-Bridge converter, two PWM methods are compared and analyzed. Finally, simulation results verify the proposed 5-level H-Bridge LIDVR system.
Keywords