Backplane and power conversion method and apparatus

A backplane comprising:

• a power conversion apparatus that comprises a first power module, a second power module, and a controller, wherein the controller is soldered on the backplane, each power module is connected to the backplane by a pin, each power module comprises a signal processor and a power converter, the signal processor is connected to the power converter, and the controller is connected to the signal processor in each power module, and the controller is configured to:
• control the signal processor in each power module to be in an operating state;
• the signal processor in the first power module is configured to:
• generate a first carrier signal,
• drive the connected power converter based on the first carrier signal, and
• send the first carrier signal to the signal processor in the second power module;
• the power converter in the first power module is configured to:
• perform power conversion on an inputted first current or first voltage by using the first carrier signal, and
• output a first output current obtained through the conversion or a first output voltage obtained through the conversion;
• the signal processor in the second power module is configured to:
• receive the first carrier signal,
• determine a period of the first carrier signal, and
• determine a second carrier signal based on the period of the first carrier signal;
• and
• the power converter in the second power module is configured to:
• perform power conversion on an inputted second current or second voltage by using the second carrier signal, and
• output a second output current obtained through the conversion or a second output voltage obtained through the conversion,
• wherein the signal processor in the second power module is further configured to:
• generate a third carrier signal, and
• perform phase-locking on the third carrier signal based on the period of the first carrier signal and a target phase difference to obtain the second carrier signal, wherein the target phase difference is determined based on a quantity of power modules.

A power conversion method, applied to a power conversion apparatus, the power conversion apparatus comprises a first power module, a second power module, and a controller, each power module comprises a signal processor and a power converter, the signal processor is connected to the power converter, the controller is connected to the signal processor in each power module;

• the controller is configured to control the signal processor in each power module to be in an operating state;
• and the power conversion method comprises:
• receiving, by a signal processor in the second power module, a first carrier signal sent by a signal processor in the first power module, and
• determining a period of the first carrier signal, wherein the first carrier signal is generated by the signal processor in the first power module;
• and
• determining, by the signal processor in the second power module, a second carrier signal based on the period of the first carrier signal, so that a power converter in the second power module performs, by using the second carrier signal, power conversion on an inputted second current or second voltage, and
• outputs a second output current obtained through the power conversion or a second output voltage obtained through the conversion,
• wherein determining, by the signal processor in the second power module, the second carrier signal based on the period of the first carrier signal further comprises:
• generating, by the signal processor in the second power module, a third carrier signal, and performing phase-locking on the third carrier signal based on the period of the first carrier signal and a target phase difference to obtain the second carrier signal, wherein the target phase difference is determined based on a quantity of power modules.