Rotating electrical machine

摘要

A rotating electric machine and a method of magnetizing a rotor of a brushless rotating electric machine are disclosed, the method including forming a stationary magnetic field, rotating a rotor of a magnetizing machine in the stationary magnetic field for producing alternating current, rectifying the alternating current with a controllable bridge situated in the rotor, receiving control instructions wirelessly to the rotor, controlling a magnitude of current with the controllable bridge based on the control instructions, and feeding the controlled current to the magnetizing winding of the rotating electric machine.

主权项

1. A rotating electric machine with brushless excitation, comprising:
a main electric machine; an excitation machine whose rotor is configured to rotate with a rotor of the main electric machine and produce magnetizing power for the main electric machine; a rotating rectifier bridge electrically connected to the excitation machine for feeding a field magnetization current (IR) to a rotor winding of the main electric machine, the rotating rectifier bridge being a controlled rectifier bridge having controllable semiconductor components for controlling the field magnetization current (IR); a rotor control unit connected to the rotating rectifier bridge and being configured to control controllable semiconductor components, wherein the rotor control unit is configured to receive control instructions wirelessly; and a controllable circuit adapted to lower the magnetization of the rotor winding of the main electric machine, wherein the controllable circuit comprises:
a series connection of a diode and a resistor connected in parallel with a rotor winding of the main electric machine; anda controllable semiconductor component connected in parallel with the series connection, the rotor control unit being configured to control the controllable semiconductor component.