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Use of a control system of a polyphase rotary electric machine comprising phase short-circuit means, and use of the corresponding rotary electric machine

A control system, a technology for rotating electrical machines, applied in the direction of control systems, control of generators, and protection of power generation through control, can solve problems such as inability to ensure electrical and thermal protection of semiconductor components

Inactive Publication Date: 2018-08-21
VALEO EQUIP ELECTRIC MOTEUR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, this simple method of eliminating the effects of transients caused by load dumps has disadvantages:
[0010] - Electrical and thermal protection of the semiconductor components of the rectifier circuit cannot be ensured

Method used

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  • Use of a control system of a polyphase rotary electric machine comprising phase short-circuit means, and use of the corresponding rotary electric machine
  • Use of a control system of a polyphase rotary electric machine comprising phase short-circuit means, and use of the corresponding rotary electric machine
  • Use of a control system of a polyphase rotary electric machine comprising phase short-circuit means, and use of the corresponding rotary electric machine

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Embodiment Construction

[0042] The use of the system for controlling a multi-phase rotating electric machine comprising phase short-circuiting means corresponds to that of supplying power to an on-board electrical network 2 connected to a battery 3, as done by the inventive entity and as described in the previous patent applications referred to by the present invention A polyphase rotating electrical machine 1 of the alternator or alternator-starter type.

[0043] The electric machine in question is preferably an exciter electric machine 1 whose rotor 4 is mechanically coupled 5 to a heat engine 6 of the vehicle.

[0044] The rotor 4 includes an excitation circuit 7, and the excitation current l exc Via this excitation circuit 7, a plurality of phase currents IΦ1, IΦ2, IΦ3, IΦn (n preferably equal to 3, eg figure 1 shown, but can be equal to 1).

[0045] The electric machine 1 comprises a synchronous rectifier circuit 10 connected to the phase winding 9 in order to rectify the phase currents IΦ1, I...

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Abstract

The polyphase rotary electric machine in which the invention is implemented comprises phase short-circuit means (15, 18) included in a control system (10). The machine is fitted in a motor vehicle, operates as a generator and is connected to an on-board electric network (2). The phase short-circuit means short-circuit at least one phase winding when a DC voltage measurement (B+) of the network, regulated by a regulator device, exceeds a predetermined threshold value and a phase current 15 in the phase winding is cancelled out and changes direction. According to the invention, the control system limits an overvoltage on the network due to an event other than load shedding.

Description

technical field [0001] The invention relates to the use of a system for controlling a multiphase rotating electrical machine comprising a short-circuit device and the use of a corresponding rotating electrical machine in a motor vehicle. Background technique [0002] In motor vehicles, the on-board network is used to supply the various electrical devices equipped with the vehicle. Power is provided by at least one battery. The latter is recharged by means of a rotating electrical machine from the energy provided by the rotation of the vehicle's heat engine. A rotating electrical machine means in the most general way any multiphase rotating electrical machine used to produce direct current for supplying the on-board network. In particular, it can be an alternator or an alternator-starter. [0003] In the event of a sudden disconnection of the charging of the on-board network or the battery or both, a load dump phenomenon occurs, which generates an overvoltage on the on-boa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P9/12H02H7/06
CPCH02P9/123H02P2101/25F02N11/04F02N11/10H02P9/006
Inventor R.莫尔瓦尼P.马森G.杜蒂鲁尔
Owner VALEO EQUIP ELECTRIC MOTEUR