摘要： In this paper, a simplified pulsewidth modulation with switching constraint control scheme is proposed to eliminate the circulating currents for bidirectional paralleled ac/dc converters in grid-tied system. The proposed control scheme can reduce the circulating currents and does not need additional current sensors and communication device among paralleled converters compared with conventional methods. Therefore, the paralleled system cost can be reduced. In addition, the current shaping and sharing between the paralleled converters can be well accomplished so that the overall performance of the paralleled converter system can be raised. Furthermore, the dc, ac, and self-generated circulating currents are clearly analyzed by graphics, and the synchronous circulating currents are first explored. Finally, a prototype system is constructed, and the proposed control scheme is implemented using a Spartan-3E XC3S250E FPGA. Both simulation and experimental results verify the validity of the proposed theory and control scheme. 其他題名： TIE 出版者： New York: IEEE 出版日期： 2015-07 出處： IEEE transactions on industrial electronics (1982), 2015-07, Vol.62 (7), p.4573-4586 資源來源： IEEE Electronic Library (IEL) 版權： Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Jul 2015 識別號： ISSN: 0278-0046 識別號： EISSN: 1557-9948 識別號： DOI: 10.1109/TIE.2014.2352597 識別號： CODEN: ITIED6
