Rectifier, rectification circuit and control method of rectification circuit

The invention discloses a rectifier, a rectification circuit and a control method of the rectification circuit. The rectification circuit comprises a transformer, one-way conduction components D1, D2 and D3, DC-side capacitors C1 and C3, a DC-side capacitance unit C2, two switch components Q11 and Q12 and two switch components Q21 and Q22, wherein the one-way conduction components D1, D2 and D3 are sequentially connected in the same direction, the DC-side capacitors C1 and C3 and the DC-side capacitance unit C2 are sequentially connected in the same direction, the two switch components Q11 and Q12 are connected in a reverse direction, and the two switch components Q21 and Q22 are connected in the reverse direction. Compared with a three-level rectification circuit, the rectification circuit has the advantage that grid-connected harmonics can be reduced; and compared with a five-level rectification circuit, the rectification circuit has the advantage that fewer switch devices are adopted. 本发明公开了种整流器、整流电路及其控制方法