求助2000w纯正弦波逆变器后极该用多大电感

                                                                新手求助，

                                                                我想做一个2000w的纯正弦波逆变器后极，后极就差电感了，

                                                                可我对电感不怎么懂，

                                                                所以来论坛求助，

                                                                后级我想弄成一个电感的，电感量我想弄1.2mh的够吗？

                                                                还有磁心可以选什么型号的

                                                                对了，电脑电源里面的那个大又重的电感可不可以代替这个啊

                                                                知道的回复问一下吧，谢谢了