Single-phase power factor correction circuit based on three-transistor five-level topology
A single-phase power and correction circuit technology, which is applied in high-efficiency power electronic conversion, output power conversion device, AC power input conversion to DC power output, etc., can solve problems such as large number of tubes, complicated control, and insufficient number of levels , achieve simple topology, reduce failure loss, and simple structure
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[0042] Such as figure 1 As shown, the single-phase power factor correction circuit based on three-tube five-level topology, including inductor L, switch tube Q 1 , Q 2 , Q 3 , Diode D 1 ~D 11 , capacitance C 1 , capacitance C 2 ;
[0043] The AC side of the AC power supply is connected to the diode D 1 anode, diode D 2 a cathode connected to the nodes forming terminal b;
[0044] The other side of the AC power supply AC is connected to one end of the inductor L, and the other end of the inductor L is connected to the diode D 3 anode, diode D 4 Cathode; the other end of the inductor L and the diode D 3 、D 4 The connected nodes of constitute the endpoint a;
[0045] Switch tube Q 2 The drains are connected to the diode D 3 cathode, diode D 9 Cathode, switching tube Q 1 source;
[0046] Switch tube Q 2 The source is connected to the diode D respectively 4 anode, diode D 10Anode, switching tube Q 3 Drain;
[0047] Diode D 7 Cathode connection capacitance C ...
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