Unlock instant, AI-driven research and patent intelligence for your innovation.

Motor braking output method for pure electric city bus

A technology for motor braking and city buses, applied in electric vehicles, control drives, motor vehicles, etc., can solve problems such as increasing the operating cost of city buses, reducing the service life of motors, and inertial vibration of city buses, achieving reasonable filtering and extended use The effect of life and avoiding motor jamming

Active Publication Date: 2018-07-17
ZHEJIANG CRRC ELECTRIC VEHICLE CO LTD
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to the characteristics of city buses, they will stop when they encounter a bus stop during driving, and they need to be turned on immediately after passengers get on the bus. Therefore, during this process, the motor needs to stop and start continuously, which will cause the city bus to run Inertial jitter is formed during the process, and the motor needs to run at different speeds frequently, which may cause the motor to stall, which will cause the motor to heat up sharply, reduce the service life of the motor, and increase the operating cost of the city bus

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Motor braking output method for pure electric city bus
  • Motor braking output method for pure electric city bus
  • Motor braking output method for pure electric city bus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] This embodiment provides a method for motor braking output of a pure electric city bus, such as figure 1 As shown, the method includes the steps of:

[0023] S1: Determine whether the speed of the motor reaches the preset low speed range;

[0024] S2: If yes, set the braking torque to 0; if not, continue to step S1;

[0025] S3: judging whether the motor torque value is within the preset torque range;

[0026] S4: If not, filter the torque exceeding the preset torque range according to the preset filtering rules, if yes, continue to step S3.

[0027] Further, the preset low speed range is the constant power speed of the motor.

[0028] Further, step S3 includes:

[0029] S31: judging whether the driving torque value of the motor is within a preset driving torque range;

[0030] S32: Determine whether the braking torque value of the motor is within the preset braking torque range.

[0031] Further, step S4 includes:

[0032] S41: If the motor driving torque value ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a motor braking output method for a pure electric city bus to solve the problem of car jitter caused by interval stopping and starting during driving of a city bus. The motor braking output method for the pure electric city bus includes steps that 1, whether the rotating speed of a motor reaches a preset low speed range or not is judged; 2, if the motor speed reaches the preset low speed range, brake torque is 0; if not, the step 1 is carried out again; 3, whether the torque value of the motor is within the preset torque range or not; 4, if the torque value of the motoris not within the preset torque range, the torque which is beyond the preset torque range is filtered according to preset filter rules, and if the torque value of the motor is within the preset torquerange, the step 3 is carried out again. The motor torque can be smoothly output at maximum efficiency, so as to achieve the effect that the city bus cannot jitter in the stopping and starting process.

Description

technical field [0001] The invention relates to the field of automobile motor braking, in particular to a method for motor braking output of a pure electric city bus. Background technique [0002] Due to the characteristics of city buses, they will stop when they encounter a bus stop during driving, and they need to be turned on immediately after passengers get on the bus. Therefore, during this process, the motor needs to stop and start continuously, which will cause the city bus to run Inertial jitter is formed during the process, and the motor needs to run at different speeds frequently, which may cause the motor to stall, which will cause the motor to heat up sharply, reduce the service life of the motor, and increase the operating cost of the city bus. [0003] To sum up, it is necessary to design a method for motor braking output of pure electric city buses to solve the above problems. Contents of the invention [0004] In order to solve the problems of the prior ar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCB60L15/2009B60L2200/18B60L2240/421B60L2240/423Y02T10/72
Inventor 颜祺宇何安清王建荣胡远敏陈永忠李白冰徐莉振张宏王韬
Owner ZHEJIANG CRRC ELECTRIC VEHICLE CO LTD