• The Transactions of the Korean Institute of Power Electronics
• /
• v.17 no.6
• /
• pp.486-494
• /
• 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.

• Proceedings of the KIPE Conference
• /
• 2012.07a
• /
• pp.363-364
• /
• 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.