Unlock instant, AI-driven research and patent intelligence for your innovation.

Power systems for three-phase permanent magnet motors

A technology of permanent magnet motor and power supply system, which is applied in the direction of motor, electric device, battery/battery traction, etc., and can solve problems such as fire and overheating

Active Publication Date: 2015-08-26
ALSTOM TRANSPORT TECH SAS
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From this, this leads to overheating in the first place, which may be severe enough to cause a fire
Furthermore, this current produces a constant vibrational coupling (except in the case of a three-phase short-circuit of the motor terminals), which can lead to annoying (bogey) stability problems in the case of rail vehicles

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Power systems for three-phase permanent magnet motors
  • Power systems for three-phase permanent magnet motors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] figure 1 A traction circuit is shown, which comprises a three-phase inverter 1 in a known manner, each phase of which is connected to the output of one end 2a, 2b and 2c of the windings 3a, 3b and 3c of the permanent magnet motor 4, respectively. The other ends 5a, 5b, and 5c of the windings 3a, 3b, and 3c are connected to the neutral common point 6 of the motor 4. The inverter 1 itself is supplied with power from a continuous bus 7 connected to the ground via an input capacitor 8.

[0016] In a similarly known manner, the three phases at the output of the inverter 1 are connected to the windings of the motor 4 via three isolation contactors 9 which, in the event of a failure, enable the inverter Isolated from the motor. Since the circuit 10 for detecting faults and for controlling the contactor 9 is well known, the circuit will not be described in more detail.

[0017] It will be understood that if a short-circuit fault occurs inside the motor, for example between the ter...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The system has a three-phase inverter (1) connected to primary ends (2a-2c) of windings (3a-3c) of three phases of a permanent magnet three-phase motor (4). A three-phase isolation contactor (9') is placed on two of the windings between the inverter and the respective primary end. Secondary ends (5a-5c) of the windings are connected to a common point (6), and a neutral double contactor (11) is placed on the two windings between the point and the respective secondary end. The contactors (9', 11) are respectively placed between the ends (2a, 5a) and the ends (2c, 5c). An independent claim is also included for a method for deactivating a permanent magnet four-phase motor for a railway vehicle in case of an internal defect.

Description

Technical field [0001] The present invention relates to a power supply system for a three-phase permanent magnet motor, particularly to rail vehicles, and more particularly to the above-mentioned system including the following components, which includes an inverter, which is connected to the three-phase winding of the motor The first end of each of the three windings and the isolation contactor are arranged on at least two of the phases between the inverter and the first end of the corresponding winding, and are connected to the second ends of the three windings at the common point. Background technique [0002] In the case of a fault, the isolation contactor can isolate the motor from the inverter, which is suitable for the case of an external fault of the motor. However, this method is not sufficient in the case of internal faults, especially when a short circuit occurs in the two phases inside or outside the motor. [0003] Since the permanent magnet motor continuously has flux...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02H7/08
CPCY02T10/641B60L2220/54B60L2200/26B60L2240/425B60L15/007B60L11/1803B60L2220/56H02H7/0838Y02T10/642B60L3/0061Y02T10/7005B60L3/04B60L50/51Y02T10/64Y02T10/70
Inventor O·贾科莫尼G·德波特S·贝兰D·西伯斯
Owner ALSTOM TRANSPORT TECH SAS