Controlled-Type ZVS Technique without Auxiliary Components for Micro-inverters

Qian Zhang; Dehua Zhang; Haibing Hu; John Shen; Issa Batarseh

Controlled-Type ZVS Technique without Auxiliary Components for Micro-inverters

Vol. 13, No. 6, pp. 919-927, Nov. 2013

10.6113/JPE.2013.13.6.919

BCM

Inverters

Soft-switching techniques

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Abstract

This paper proposes a Boundary Current Mode (BCM) control scheme to realize soft switching on a conventional single phase full bridge DC/AC inverter. This technique with the advantages of no auxiliary components, low cost, high efficiency, and simple in control, is attractive for micro-inverter applications. The operation principle and characteristic waveforms of the proposed soft switching technique are analyzed in theory. A digital controller is provided based on that theory. To balance the requirements of efficiency, switching frequency, and inductor size, the design considerations are discussed in detail to guide in BCM inverter construction. A 150W prototype is built under these guidelines to implement the BCM control scheme. Simulation and experiment results demonstrate the feasibilities of the proposed soft switching technique.

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Cite this article

[IEEE Style]

Q. Zhang, D. Zhang, H. Hu, J. Shen, I. Batarseh, "Controlled-Type ZVS Technique without Auxiliary Components for Micro-inverters," Journal of Power Electronics, vol. 13, no. 6, pp. 919-927, 2013. DOI: 10.6113/JPE.2013.13.6.919.

[ACM Style]

Qian Zhang, Dehua Zhang, Haibing Hu, John Shen, and Issa Batarseh. 2013. Controlled-Type ZVS Technique without Auxiliary Components for Micro-inverters. Journal of Power Electronics, 13, 6, (2013), 919-927. DOI: 10.6113/JPE.2013.13.6.919.