Junction temperature calculation method and device for power conversion module, medium, and vehicle

Abstract

The disclosure relates to a junction temperature calculation method for a power conversion module. The power conversion module includes a first switching device. The junction temperature calculation method includes: correcting a conduction loss of the first switching device, where the correction of the conduction loss is based on at least a first correction coefficient K1, and the first correction coefficient K1 is associated with a modulation ratio of the power conversion module; and calculating a junction temperature of the first switching device as a junction temperature of the power conversion module, where the calculation of the junction temperature of the first switching device is based on at least the corrected conduction loss. The disclosure also relates to a junction temperature calculation device for a power conversion module, a computer-readable storage medium, and a vehicle. In the junction temperature calculation solution proposed by the disclosure, the conduction loss and a switching loss of the switching device are corrected based on the correction coefficient according to factors such as the modulation ratio and an alternating-current frequency, thereby improving the calculation precision of the junction temperature of the power conversion module.

Dependencies are inferred from the claim text.