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引用次数: 0
摘要
研究了一种基于虚拟空间矢量脉宽调制(virtual space vector pulse-width modulation, SVPWM)的多端口dc-ac变换器的功率控制方案。多端口直流-交流变换器可同时提供2个直流端口与光伏和蓄电池接口，1个交流端口与交流电网接口。为了实现光伏、蓄电池和交流电网之间灵活的有功潮流，详细分析了一种带有内虚拟SVPWM的外功率控制环方案。讨论了采用该控制器的多端口直流-交流变换器的功率调节范围。实验结果验证了控制和调制方案的可行性和有效性。
A Virtual SVPWM based Power Control Scheme for Multi-Port DC-AC Converters in PV-Battery Hybrid Systems
A virtual space vector pulse-width modulation (SVPWM) based power control scheme is investigated for the multi-port dc-ac converter in PV-battery hybrid systems. Two dc ports interfaced with PV and battery, and one ac port interfaced with ac grid, can be provided by the multi-port dc-ac converter, simultaneously. In order to realize flexible active power flow among PV, battery and ac grid, an outer power control loop with an inner virtual SVPWM scheme is analyzed in detail. The power regulation range of the multi-port dc-ac converter with the presented control is discussed. The feasibility and effectiveness of the control and modulation scheme is verified by experimental results.
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