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Efficiency optimizing method of master-slave type multi-motor driving system

A multi-motor drive, efficiency optimization technology, applied in the direction of motor, electric vehicle, control drive, etc., can solve the problem of low comprehensive efficiency, and achieve the effect of extending the driving range, improving economy and power.

Active Publication Date: 2013-09-04
ZONSON SMART AUTO CORP
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of low overall efficiency of the electric vehicle motor drive system during the entire driving process, the present invention provides an efficiency optimization method for a multi-motor drive system that fully utilizes the advantages of the working efficiency of different power motors

Method used

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  • Efficiency optimizing method of master-slave type multi-motor driving system
  • Efficiency optimizing method of master-slave type multi-motor driving system
  • Efficiency optimizing method of master-slave type multi-motor driving system

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Embodiment Construction

[0038] The present invention will be further described below according to the accompanying drawings and specific embodiments.

[0039] figure 1 It is a composition block diagram of the master-slave multi-motor drive system involved in the present invention, including: master motor (5), slave motor (6), gear reduction mechanism (2), clutch 1 (7), clutch 2 (8), joint Coupling 1 (9), coupling 2 (10), and motor control system.

[0040] The main motor (5) is a high-power motor, the slave motor (6) is a low-power motor, the main motor (5), the clutch 1 (7), the coupling 1 (9) and the power input end 1 of the gear reduction mechanism (3) Fixedly installed together; the motor (6), clutch 2 (8), coupling and the power input end 2 (4) of the gear reduction mechanism are fixedly installed together; after the two motors are decelerated and increased by the gear reduction mechanism , to output the power from the output terminal to the rear wheels (1).

[0041] The block diagram of the m...

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Abstract

The invention belongs to the field of motor control, and provides an efficiency optimizing method of a master-slave type multi-motor driving system. The efficiency optimizing method comprises master motor independent driving steps, slave motor independent driving steps and dual-motor synergetic driving steps. The principle of efficiency optimizing in dual-motor synergetic driving comprises the steps of obtaining a distribution ratio corresponding to the smallest instantaneous power loss of the multi-motor driving system by changing the distribution ratio of a master motor and the distribution ratio of a slave motor, and therefore obtaining torque and the rotation speed of the master motor and the slave motor when efficiency is optimal. According to the efficiency optimizing method of the master-slave type multi-motor driving system, output power of the master motor and output power of the slave motor can be optimized and distributed in real time according to different traveling working conditions of a vehicle, comprehensive advantages of the different motors are sufficiently expressed, the efficiency of the complete vehicle is kept optimal all the time, therefore, the driving range of the electric vehicle can be effectively prolonged, and economy and dynamic performance are improved.

Description

technical field [0001] The invention belongs to the field of motor control, and in particular relates to an efficiency optimization method of a master-slave multi-motor drive system, which is used to improve the efficiency of a complete vehicle and extend the mileage of an electric vehicle. Background technique [0002] The operating performance of electric vehicles is mainly determined by the type and performance of the motor drive system. Electric vehicle drive system is generally composed of traction motor, control system, mechanical deceleration and transmission device, wheels and so on. Electric vehicles can be driven independently by a single motor, or jointly driven by multiple motors. [0003] Electric vehicles need a large power when starting and climbing, and need a small power when driving at a constant speed. The power of the vehicle will inevitably change during the driving process, and the motor can only be used when its output power is 0.7 to 1.1 times the ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCY02T10/64Y02T10/72
Inventor 宾洋李静冯能莲董昊龙占子奇郭靖濮祥真
Owner ZONSON SMART AUTO CORP
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