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Automatic gear shifting control system of motor in electric automobile

A technology of automatic shifting and control system, applied in motor generator control, AC motor acceleration/deceleration control, electric vehicle and other directions, can solve the problems of difficult adjustment of friction torque, short service life of synchronizer, easy damage to friction surface, etc. Guarantee fast response and precise control, good electromagnetic compatibility performance, and ensure the effect of stability

Active Publication Date: 2009-11-18
武汉理工通宇新源动力有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the synchronizer is that it is difficult to adjust the friction torque, the synchronization time is long, and the friction surface is easily damaged, and the service life of the synchronizer is short

Method used

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  • Automatic gear shifting control system of motor in electric automobile
  • Automatic gear shifting control system of motor in electric automobile
  • Automatic gear shifting control system of motor in electric automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] 1. Control system structure

[0024] Such as figure 1 , figure 2 , image 3As shown, the electric vehicle motor automatic variable speed control system includes a motor controller 230, a system controller 100, a battery voltage sensor 410, a battery current sensor 420, a first rotational speed encoder 1, a second rotational speed encoder 23, a fork position Sensor group 320, transmission oil temperature sensor 330, pressure source pressure sensor 350; system controller 100 is composed of microprocessor CPU224XPCN, module EM235CN and module EM231CN to form a modular structure, module EM235CN is located between microprocessor CPU224XPCN and module EM231CN (system Controller 100 is a modular structure, is made up of CPU224XPCN+EM235CN+EM231CN, Siemens); Motor controller 230 is: FRENIC5000VG7S series, Japanese Fuji Electric Company; , corresponding to 2 output terminals) are connected to the 2 output terminals of the battery pack 400, the power output terminals of the m...

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PUM

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Abstract

The invention relates to an automatic gear shifting control system of a motor in an electric automobile, which is characterized by comprising the following components: a motor controller, a system controller, a battery voltage sensor, a battery current sensor, a first rotating speed coder, a second rotating speed coder, a folk position sensor group, a transmission motor oil temperature sensor, and a pressure source pressure sensor; wherein, the input ends of the motor controller are connected with two output terminals of a storage battery via a first wire; the output end of the motor controller is connected with the input end of the power supply via a second power supply wire. By using the invention, response is rapid, and gear shifting time is less than 1s; speed control is controller at constant speed with accuracy, and the phase error is less than 1 degree; gear shifting is smooth without any gear shocking.

Description

technical field [0001] The invention relates to an automatic variable speed control system of an electric vehicle motor. Background technique [0002] Electric vehicles include pure electric vehicles, hybrid electric vehicles and fuel cell electric vehicles. Its driving motor often adopts AC induction motor and AC permanent magnet motor. [0003] These two kinds of motors can adopt frequency conversion technology to realize stepless speed regulation, so variable speed transmission devices are generally not required on industrial machinery. Even on low-speed cars with low speed, there is generally no need for a speed change transmission device, but for vehicles with high speed requirements and strong climbing ability, this configuration is difficult to meet the driving requirements of the vehicle. When the vehicle is running at high speed, direct transmission or small reduction ratio transmission can be adopted to meet the driving requirements of the highest speed; and when...

Claims

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Application Information

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IPC IPC(8): H02P21/00B60L15/24H02P23/20
CPCY02T10/64Y02T10/72
Inventor 吴森曹正策苗华春
Owner 武汉理工通宇新源动力有限公司
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