Power converter and motor module

The power converter converts direct current into n-phase alternating current. The power converter includes n output terminals, a first power supply terminal, a second power supply terminal, and n series bodies. During one cycle of the n-phase AC output, at least one phase of the AC output has a protection operation mode having at least one of a first on-fixed period in which the first semiconductor switching element is fixed on and a second on-fixed period in which the second semiconductor switching element is fixed on. In the protection operation mode, in at least one phase of the n phases, the first on-fixed period is different from the first on-fixed period of any other phase, or the second on-fixed period is different from the second on-fixed period of any other phase. 电力转换器将直流电转换为n相的交流电。电力转换器具备n个输出端子、第一电源端子、第二电源端子以及n个串联体。在n相的交流输出的一个周期的期间，交流输出中的至少1相具有保护动作模式，该保护动作模式具有第一半导体开关元件被固定为接通的第一接通固定期间和第二半导体开关元件被固定为接通的第二接通固定期间中的至少一方。在保护动作模式中，在n相中的至少1相中，第一接通固定期间与其他任意1相的第一接通固定期间不同，或者第二接通固定期间与其他任意1相的第二接通固定期间不同。