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Motor driving system and vehicle

A technology for a motor drive system and a charger, which is used in electric vehicles, vehicle components, and control of winding-type excitation motors, can solve problems such as high cost and complex structure, reduce weight and volume, simplify structure, and increase endurance. Effect

Active Publication Date: 2020-08-07
HUAWEI DIGITAL POWER TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The excitation motor has the characteristics of not using or using a small amount of permanent magnets, adjustable excitation, and a wide speed range. When the motor system uses an excitation motor, it usually uses a drive component such as a carbon brush structure or a wireless transformer to drive the excitation motor. In addition, in the storage A voltage conversion circuit and a corresponding drive control circuit are added between the electric unit and the drive assembly. The existing motor drive system has a relatively complex structure and high cost.

Method used

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  • Motor driving system and vehicle
  • Motor driving system and vehicle
  • Motor driving system and vehicle

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Embodiment Construction

[0028] The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application, and are not intended to limit the present application.

[0029] Before introducing the embodiment of the present application, the discovery process of the embodiment of the present application is briefly described first.

[0030] Such as figure 1 as shown, figure 1 It is a schematic diagram of the circuit structure of the drive part of a motor drive system. figure 1 The structure shown includes an excitation drive circuit, a rotary connector, an electric storage unit, an excitation control unit and a motor controller, wherein the excitation drive circuit includes a DC-DC conversion circuit, and the electric energy of the electric storage unit is converted into a variable energy by using the excitation drive circuit. The direct current is adjusted, and the direct current generated by the excitation drive circuit is transmitted to the ro...

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Abstract

The invention provides a motor driving system and a vehicle, relates to the technical field of vehicle control, and can simplify the structure of the motor driving system and reduce the cost. The motor driving system comprises a bidirectional charger, an excitation driving assembly and a motor controller, wherein the bidirectional charger comprises a power factor correction circuit, a first voltage conversion circuit, a first transformer and a second voltage conversion circuit; a power storage unit is electrically connected to a second port of the second voltage conversion circuit; the excitation driving assembly is electrically connected to a multiplexing node through a first switch unit, the multiplexing node is located between the power factor correction circuit and the first voltage conversion circuit, and the excitation driving assembly is used for driving the excitation motor.

Description

technical field [0001] The present application relates to the field of vehicle control, in particular to a motor drive system and a vehicle. Background technique [0002] The motor system is the core component of new energy vehicles, and high efficiency, low cost, and small size are the development trends of the future motor system. The excitation motor has the characteristics of not using or using a small amount of permanent magnets, adjustable excitation, and wide speed range. When the motor system uses an excitation motor, it usually uses drive components such as carbon brush structures or wireless transformers to drive the excitation motor. In addition, in the storage A voltage conversion circuit and a corresponding drive control circuit are additionally provided between the electric unit and the drive assembly. The structure of the existing motor drive system is relatively complicated and the cost is relatively high. Contents of the invention [0003] The technical s...

Claims

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Application Information

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IPC IPC(8): H02P7/06H02J7/00
CPCH02M7/5387H02M7/02H02M3/02H02M3/335H02M1/42H02J7/02H02J3/38H02J3/32H02P6/32B60L53/24H02M3/33592H02J7/0068Y02T10/7072Y02T10/70Y02T90/14
Inventor 陈金华殷孝德王少华程洋毋超强
Owner HUAWEI DIGITAL POWER TECH CO LTD
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