A single-phase five-level
power factor correction circuit based on a
hybrid H bridge comprises switching tubes Q1, Q2 and Q3. One side of an alternating-current power supply Vs is connected with an
anode of a
diode D1 and a
cathode of a
diode D2, and a connection node forms an end point b. The other side of the alternating-current power supply Vs is connected with one end of an
inductor L, the other end of the
inductor L is connected with the
anode of a
diode D3 and the
cathode of a diode D4, and connection nodes form an end point a. The drain
electrode of the switching tube Q3 is connected with the
cathode of the diode D1, the cathode of the diode D3, the
anode of the diode D7, the drain
electrode of the switching tube Q1 and a connection node to form an end point c. The source electrodeof the switching tube Q3 is connected with the anode of a diode D2, the anode of a diode D4, the cathode of a diode D8 and the source
electrode of a switching tube Q2, and the connection node forms anend point d. The source of the switching tube Q2 is connected with the drain of the switching tube Q1, and the connection node forms an end point n. The cathode of the diode D7 is connected with oneend of the
capacitor C1, and a connection node forms an end point p. The negative electrode of the
capacitor C2 is connected with the anode of the diode D8 and the connection node forms an end point m. And the endpoint a, the endpoint c, the endpoint d and the endpoint n form four ports of the
hybrid H-bridge
network structure. The circuit structure has the advantages of low cost, high reliability, simple
control system design and the like.