• Title/Summary/Keyword: three-phase embedded Z-source inverter

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Three Phase Embedded Z-Source Inverter (3상 임베디드 Z-소스 인버터)

  • Oh, Seung-Yeol;Kim, Se-Jin;Jung, Young-Gook;Lim, Young-Cheol
    • The Transactions of the Korean Institute of Power Electronics
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    • v.17 no.6
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    • pp.486-494
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    • 2012
  • In this paper, we proposes the three-phase embedded Z-source inverter consisting of the three embedded Z-source converters and it's the output voltage control method. Each embedded Z-source converter can produce the bipolar output capacitor voltages according to duty ratio D such as single-phase PWM inverter. The output AC voltage of the proposed system is obtained as the difference in the output capacitor voltages of each converter, and the L-C output filter is not required. Because the output AC voltage can be stepped up and down, the boost DC converter in the conventional two-stage inverter is unnecessary. To confirm the validity of the proposed system, PSIM simulation and a DSP based experiment were performed under the condition of the input DC voltage 38V, load $100{\Omega}$, and switching frequency 30kHz. Each converter is connected by Y-connection for three-phase loads. In case that the output phase voltage is the same $38V_{peak}$ as the input DC voltage and is the 1.5 times($57V_{peak}$), the simulation and experimental results ; capacitor voltages, output phase voltages, output line voltages, inductor currents, and switch voltages were verified and discussed.

Three-Phase Embedded Z-Source Inverter System by the Symmetric and Asymmetric Output Control (대칭 및 비대칭 출력제어에 의한 3상 임베디드 Z-소스 인버터 시스템)

  • Oh, Seung-Yeol;Kim, Se-Jin;Jung, Young-Gook;Hong, Seung-Pyo;Lim, Young-Cheol
    • Proceedings of the KIPE Conference
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    • 2012.07a
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    • pp.363-364
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    • 2012
  • 본 논문에서는 3대의 임베디드 Z-소스 컨버터를 이용해 3상 교류전압을 출력하는 3상 임베디드 Z-소스 인버터를 제안하였다. 제안된 3상 인버터는 동일한 교류전압을 사용하는 3대의 임베디드 Z-소스 컨버터를 이용한다. 제안된 3상 인버터는 시뮬레이션과 실험을 통해 그 타당성을 입증하였다.

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