한국전자통신학회논문지 (The Journal of the Korea institute of electronic communication sciences)

한국전자통신학회 (Korea Institute of Electronic Communication Science)
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SPWM 구동 방식을 이용한 단상 풀 브리지 인버터의 전압 제어에 대한 연구

A Study on the Voltage Control of a Single Phase Full-bridge Inverter using SPWM Driving Method

  • Ko, Yun-Seok (Dept. Electronic Engineering, Namseoul University)
  • 투고 : 2017.09.28
  • 심사 : 2017.10.18
  • 발행 : 2017.10.31
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초록

본 연구에서는 SPWM 구동방식의 단상 풀 브리지 인버터의 전압제어계를 설계하였다. 전압제어계는 단상 풀-브리지 인버터, 출력전압과 기준전압의 오차를 선형적으로 보상하기 위한 PI 제어기, 제어기 신호로부터 SPWM 방식을 이용하여 게이트 신호를 발생시키기 위한 PWM 구동회로, 인버터 출력 전압 파형을 정현 파형으로 필터링하기 위한 LC 필터로 구성하였다. 끝으로, EMTP-RV를 이용하여 PWM 구동방식을 기반으로 하는 단상 풀-브리지 인버터의 전압 제어계를 모델링하였고 수개의 기준전압에 대한 시뮬레이션 연구를 통해 출력전압이 정확하게 기준전압을 수렴하는 것을 확인함으로서 제어계 설계의 유효성을 확인할 수 있었다.

In this study, the voltage control system of a single phase full bridge inverter was designed based on the SPWM driving method. The voltage control system consists of a single-phase full-bridge inverter, a PI controller for linearly compensating the error between the reference voltage and the output voltage, a PWM driving circuit for generating the gate signal using the SPWM method from the controller signal, and an LC filter for filtering the inverter output voltage waveform into sinusoidal waveform. Finally, the voltage control system of a single-phase full-bridge inverter based on the PWM driving method was modeled using EMTP-RV and by showing that the output voltage accurately converges the reference voltage through several simulation examples, the validity of the control system design was verified.

키워드

참고문헌

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