逆变器并机用三相电抗器设计

The Three-phase Reactors Designed for Parallel Connected lnverters

本文针对可再生能源逆变器需要并机运行以实现大功率电能输出的特点，通过分析现用逆变器的并网用滤波电抗器，提出了一种新型的兼具有共模电流抑制效果的三相电抗器方案，该方案在保证各相电路的差模感量的同时，通过解耦磁集成的方法使三相电抗器的零序电抗大大增加。该电抗器应用在逆变器并机系统中，可减小电路中的滤波电抗器的数量，改善系统的电路结构，减少逆变器的成本，具有较大的实际应用价值。

In this paper, proposed a new three-phase reactor having the common mode current suppression effect, working in renewable energy power inverters which need to work in parallel to achieve a power output of in order to achieve high power output. The scheme making the three-phase reactor＇ s zero sequence reactance greatly increased by the magnetic integrated approach while ensuring the differential mode inductance of each phase. The reactor used in the inverter system which need to work in parallel, can reduce the number of filter reactors, improve the circuit configuration of the system, reduce the cost of the inverter, have a great practical value.