不平衡三相电网并网逆变器控制策略综述
摘要
当电网侧电压不平衡时,并网逆变器的输出有功功率和电流将存在二次脉动和畸变。为了有效降低并网逆变器对电网的冲击,提高电网不平衡时并网逆变器并网电流质量,电网在不平衡情况下时,研究并网逆变器控制策略成为了迫切的需求。由不同控制目标,从并网同步算法、正负序分离、电流跟踪控制、谐波补偿和滤波器技术等方面对现有并网逆变器控制策略进行综述。最终,对不平衡电网情况下并网逆变器及其控制策略发展趋势进行探讨。
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DOI: http://dx.doi.org/10.26549/gcjsygl.v3i9.2518
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