A grid-tied flyback-based PV inverter with BCM variable frequency voltage mode control

作者：Chiang S J^*; Ma Chao Tsung; Xiao W M; Juang Kai Cheung

来源：Journal of the Chinese Institute of Engineers, 2014, 37(6): 741-751.

DOI：10.1080/02533839.2013.839422

• boundary conduction mode
• variable frequency peak current mode control
• variable frequency voltage mode control

The modularized microinverter, which can feed small power to the grid directly, has the merit of increasing the conversion efficiency and installed flexibility of the renewable power generation system. This paper proposes a control method for a microinverter derived from the conventional AC-DC boundary conduction mode (BCM) PFC converter. The variable frequency peak current mode control method and the variable frequency voltage mode control method are proposed for the control of a flyback-based inverter. Modeling of the inverter and quantitative controller design of the variable frequency voltage mode control method is presented. A 120W experimental system with PV module for generating power is built. The effectiveness of the proposed method is confirmed via simulations and measured results.

• 出版日期2014