含不平衡负荷的微电网中并网逆变器的滑模控制策略Sliding-Mode Control Strategies of Grid-Connected Inverters in Micro-Grid Containing Unbalanced Loads
殷桂梁;陈思佳;吴杰;张知微;张雪;
摘要(Abstract):
为改善含不平衡负载的微电网的运行性能,通过在静止坐标系中建立带不平衡负载的并网逆变器数学模型,以电压输出平衡和正序有功/无功功率输出平稳为控制目标,针对微电网中的并网逆变器提出了一种滑模补偿策略。基于积分切换函数的滑模功率控制器直接控制并网逆变器输出的有功、无功功率;基于指数趋近率的电流滑模控制器直接补偿由微网内不平衡负荷导致的负序电流分量。并网逆变器除向电网传送功率外还参与微网电能质量控制。仿真结果验证了所提控制方法的稳定性和有效性。
关键词(KeyWords): 微电网;并网逆变器;不平衡负荷;滑模控制;电能质量控制
基金项目(Foundation):
作者(Author): 殷桂梁;陈思佳;吴杰;张知微;张雪;
Email:
DOI: 10.13335/j.1000-3673.pst.2016.09.017
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