POWER CONVERSION CIRCUIT, INVERTER, AND CONTROL METHOD

This application provides a power conversion circuit, an inverter, and a control method. The power conversion circuit includes a switching network (702), a control circuit (703), a filter circuit (704), and a direct current side circuit (701); and the filter circuit (704) includes a first power inductor, a common mode choke, a first differential mode filter capacitor (Cdm), a first common mode filter capacitor (Ccml), and a second common mode filter capacitor (Ccm2). The first power inductor includes a first winding (La11) and a second winding (La12), and the common mode choke includes a third winding (Lcm11) and a fourth winding (Lcm12); a first end of the first winding (La11) and a first end of the second winding (La12) are separately connected to the switching network (702), a second end of the first winding (La11) and a second end of the second winding (La12) are respectively connected to a first end of the third winding (Lcm11) and a first end of the fourth winding (Lcm12), and two ends of the first differential mode filter capacitor (Cdm) are respectively connected to the second end of the first winding (La11) and the second end of the second winding (La12); and one end of each of the first common mode filter capacitor (Ccm1) and the second common mode filter capacitor (Ccm2) is connected to the direct current side circuit (701) by using a low impedance circuit. In this case, conversion efficiency of the inverter can be improved, and a common mode leakage current can be effectively reduced.