Variable pitch cabinet and variable pitch system

The utility model provides a variable pitch cabinet and a variable pitch system. The variable pitch cabinet comprises a cabinet body, and a logic control board, a plurality of driving control boards and a plurality of driving circuits which are arranged in the cabinet body, the number of the driving control boards is matched with that of paddle shafts in the wind generating set; each driving control board corresponds to one or more driving circuits; the logic control board is in communication connection with the plurality of driving control boards; the plurality of driving control boards are in communication connection; the driving control panel is in communication connection with the corresponding driving circuit; and the driving circuit is used for controlling operation and/or network side rectification of the variable pitch motor. In the mode, a logic control board, a driving control board and a driving circuit are integrated in the variable pitch cabinet, wherein the driving control board and the driving