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Method for operating a rotating field machine of a motor vehicle, transmission device, drive unit and motor vehicle

一种传输设备、驱动单元的技术，应用在电动汽车充电技术、电动汽车、电气元件等方向，能够解决去耦电容器大电容、高介电强度、成本高等问题，达到减小畸变最大值的效果

Active Publication Date: 2020-06-16
BAYERISCHE MOTOREN WERKE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The required decoupling capacitors usually have high capacitance and high dielectric strength and are therefore dimensioned accordingly and are very expensive

Method used

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  • Method for operating a rotating field machine of a motor vehicle, transmission device, drive unit and motor vehicle
  • Method for operating a rotating field machine of a motor vehicle, transmission device, drive unit and motor vehicle
  • Method for operating a rotating field machine of a motor vehicle, transmission device, drive unit and motor vehicle

Examples

Experimental program
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Embodiment Construction

[0030] In the figures, identical and functionally identical elements are provided with the same reference symbols.

[0031] figure 1 with figure 2 An embodiment of a drive unit 1 for a motor vehicle not shown here is shown. The drive unit 1 has a rotating field electric machine 2 which has at least two winding systems 2a, 2b. Furthermore, the drive unit 1 has a transmission device 3 with at least two switching units 3 a , 3 b which are designed to supply the at least two winding systems 2 a , 2 b from the intermediate circuit 4 . The current idc1, idc2. For this purpose, for each switching unit 3 a , 3 b of the transmission device 3 a switching sequence is specified and provided by the control device 5 of the transmission device 3 in each working cycle. The switching sequence comprises a first switching state in which currents idc1, idc2 are drawn from the intermediate circuit 4 and a second switching state in which no currents idc1, idc2 are drawn from the intermediate c...

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PUM

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Abstract

The invention relates to a method for operating a rotating field machine (2) of a motor vehicle, wherein at least two winding systems (2a, 2b) of the rotating field machine (2) are supplied with current (idc, idc1, idc2) from a DC link (4) by means of a transmission device (3) having at least two switching units (3a, 3b) and wherein respective switching sequences (Q1, Q2) for the switching units (3a, 3b) for supplying the winding system (2a, 2b) in question are defined. For the switching sequences (Q1, Q2), first switching states (S1a, S1b) in which current (idc, idc1, idc2) is drawn from theDC link (4) and second switching states (S2a, S2b) in which no current is drawn from the DC link (4) are defined. The first switching states (S1a, S1b) of the respective switching sequences (Q1, Q2) are defined so as to be free of overlap. For at least one of the switching sequences (Q2), third switching states (S3b) are defined, in which current is fed into the DC link (4). The third switching states (3b) are defined so as to overlap with the first switching states (S1) of the other switching sequence (Q1). The invention also relates to a transmission device (3), a drive unit (1) and a motorvehicle.

Description

technical field [0001] The invention relates to a method for operating a rotating field electric machine of a motor vehicle, in which method at least two winding systems of the rotating field electric machine are supplied with voltage from an intermediate circuit by means of a transmission device having at least two switching units current, and in the method, in each duty cycle, a first switching sequence is determined for a first switching unit for powering a first winding system, and for at least one second switching unit for powering a second winding system The switching unit determines at least one second switching sequence, wherein a first switching state and a second switching state are determined for the at least two switching sequences, in which the corresponding switching unit draws current from the intermediate circuit , in the second switching state the switching unit does not draw current from the intermediate circuit, and wherein the first switching state of the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P23/26H02P6/15H02M7/493
CPCH02P2207/05H02P6/15H02M1/15H02M7/53871Y02T10/70Y02T10/7072Y02T90/14H02M1/008H02M7/53876B60L53/20B60K1/00H02P25/22H02P27/06
Inventor D·格罗泽
Owner BAYERISCHE MOTOREN WERKE AG
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