期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 36, 期 5, 页码 6015-6029出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2020.3026977
关键词
AC-AC converters; ac-dc power converters; battery chargers; dc-ac power converters; matrix converters
A new modulation method is proposed in this study to achieve zero-voltage-switching and sinusoidal line currents under bidirectional operation, by accurately controlling parameters for a high-frequency link bidirectional three-phase ac/dc dual-active-bridge converter. Experimental results confirm the capability to control active and reactive power with sinusoidal line current, achieving a total harmonic distortion of less than 4% under bidirectional operating condition at rated power.
A high-frequency link three-phase ac/dc converter based on matrix converter is widely studied because of its small size of passive components, and some modulation methods have been proposed. However, these methods have not achieved zero-voltage-switching (ZVS) and sinusoidal line currents under bidirectional operation with PQ control. This article presents a new modulation method to realize ZVS and sinusoidal line currents under bidirectional operation by accurate control parameters (duty cycle and phase shift) for high-frequency link bidirectional three-phase ac/dc dual-active-bridge (DAB) converter. The converter can realize ZVS by phase-shift-modulation similarly to the dc/dc DAB converter. The line currents have nonlinear characteristics to phase shift and duty cycle. Therefore, the proposed method uses a nonlinear mathematical model to determine the accurate duty cycle and phase shift in order to realize sinusoidal line currents. The accurate duty cycle and phase shift are determined by real-time numerical calculation. Experimental results employing a 1-kW laboratory prototype verify the capability to control active and reactive power with sinusoidal line current. It is confirmed that the proposed method can realize the sinusoidal line current with total harmonic distortion of less than 4% under the bidirectional operating condition at the rated power.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据