基于双DSC的微型并网光伏逆变器设计

Design of Grid-Connected Photovoltaic Micro-Inverter Based on Double DSC

设计了一种基于双DSC(Digital Signal Controller)控制策略的微型并网光伏逆变器。针对双DSC控制的特点,对电路拓扑结构进行了适当的革新和改进。在DC/DC模块部分使用了隔离变压器,用两个DSC芯片分别控制逆变前后电路,实现了逆变前后电路的完全隔离。详细分析了各模块的工作原理和控制策略,并制作出了相应的硬件电路进行了测试。实验达到了预期的结果,验证了该方案的可行性。

This paper designs a grid-connected photovoltaic micro-inverter based on double DSC control strategy.According to the characteristics of double DSC controlstrategy,this paper make appropriate innovation and improvements on circuit topology.In the part of DC / DC module isolation transformer is used.The two DSC chips respectively control the circuits before inverting and after,which realizes completely isolated.Detailed analysis the working principle and control strategy of each module and make the corresponding hardware circuit which is tested.