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Rotating electrical machine

一种旋转电机、主电机的技术，应用在控制发电机、通过磁场变化控制发电机、机电装置等方向，能够解决功率级损耗、增大空间和复杂度、AVR系统大等问题，达到精确设定、降低大小和额定功率的效果

Inactive Publication Date: 2014-08-13
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The power stage has a certain amount of losses and the overall AVR system is large
In addition, the AVR system requires a separate power supply, such as transformers, auxiliary exciters, etc., which increases the space and complexity required by the system

Method used

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  • Rotating electrical machine
  • Rotating electrical machine

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Embodiment Construction

[0016] figure 2 The main circuit structure of the magnetization system according to the embodiment is shown. The rotary motor features brushless excitation. That is, the electric machine does not have slip rings through which the rotor current fed from the stationary current source passes. In the present disclosure, the magnetization of the main electric machine is produced by the rotor winding 21 of the exciter or exciter which rotates with the rotor of the main electric machine. The rotor and the rotating parts are in the figure 2 As shown in the dotted box 31.

[0017] The current from the rotor winding of the exciter or exciter is rectified so that a DC current, the field magnetizing current, is fed to the rotor winding, the field winding of the main machine. In the present embodiment, rectification is performed using a controlled rectifier bridge 22 composed of thyristors T1 to T6. In this embodiment, the rotor 21 of the auxiliary motor has three phases, so the rec...

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PUM

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Abstract

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.

Description

technical field [0001] The present invention relates to rotating electrical machines, and in particular to excitation of rotating electrical machines. Background technique [0002] The operation of rotating electric machines such as electric motors and generators is based on the magnetic interaction between the stator and rotor of the electric machine. In general, the magnetization of the poles of the stator and rotor can be done by using permanent magnet pieces or by using current-carrying windings. Generally speaking, in the case of a synchronous machine, the stator comprises windings and the rotor poles are magnetized by using permanent magnets or windings carrying current. When a synchronous machine is used as a generator, the rotor is rotated by mechanical power, and the rotating magnetic field induces a voltage to the stator windings. When a synchronous machine is used as a motor, an alternating current generates a rotating magnetic field into a stator, and a magneti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P9/30
CPCH02P9/302H02K11/042H02P9/14
Inventor 埃诺·西兰德
Owner ABB (SCHWEIZ) AG
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