Transistor positioning device, power device and motor control device

The invention provides a transistor positioning device, a power device and a motor control device, and the transistor positioning device comprises: a pedestal, which is provided with a transistor station; a first positioning assembly, which is mounted on the pedestal and reciprocates in a first direction relative to the pedestal; a second positioning assembly, which is mounted on the pedestal and reciprocates along a second direction relative to the pedestal; when the second positioning assembly moves in the second direction, the first positioning assembly is driven to be away from the transistor station, the second positioning assembly limits the position of the transistor in the second direction of the transistor station in the reverse movement process, and the first positioning assembly limits the position of the transistor in the first direction of the transistor station. According to the embodiment of the invention, transistors of various sizes can be compatible while precise positioning of the transisto