The load character and control object for a parallel inverter is analyzed , the conclusion that series and parallel resonant circuit are two antithetic circuits is pointed out , this provides a theoretical guide to the control circuit design for these two inverters 分析了并聯(lián)諧振逆變器的負載特性及控制目標,指出串并聯(lián)諧振逆變電路是兩種對偶電路,為這兩種逆變器控制電路的設計提供了理論指導。