Photovoltaic intelligent power supply

A photovoltaic intelligent power supply, comprising:

• at least one unit module, a communication unit (103) and a control unit (106), wherein the at least one unit module are connected to the control unit (106) and the communication unit (103), the at least one unit module comprises an input collection unit (101), a data acquisition unit (102), a boost unit (104), an arc isolation unit (105) and an anti-PID unit (107), wherein the input collection unit (101) is connected to a photovoltaic module, the data acquisition unit (102) is configured to acquire voltage and current state signals, the boost unit (104) is configured to perform interleaving chopping and operate in an MPPT mode, the arc isolation unit (105) is configured to receive instructions sent by the control unit (106) to execute opening and closing;
• and the anti-PID unit (107) is configured to receive instructions sent by the control unit (106) so as to generate proper DC voltage to be applied between the negative electrode of a cell panel and ground, wherein the boost unit (104) comprises an input capacitor (301), two IGBT modules (302) comprising backward diodes, two inductors (303), two major circuit diodes (304), an output capacitor (305) and two bypass diodes (306), wherein when the data acquisition unit (102) detects that input voltage is higher than output voltage, boost circuits in the boost unit (104) do not work, and current flows through the bypass diodes (306);
• and when the input voltage is lower than the output voltage, the boost circuits in the boost unit (104) work, while the bypass diodes (306) are naturally switched off, the two boost circuits are enabled to interleaving chopping output according to requirements of MPPT,
• wherein a second drive circuit (208) is disposed between the control unit (106) and the anti-PID unit (107) to receive instructions from the control unit (106) and then drive the anti-PID unit (107).