Control system and method for fast response of power of range extender for electric vehicle
A fast-response, electric vehicle technology, applied in the direction of electric vehicles, motor vehicles, control drives, etc., can solve problems such as difficult to correctly and timely respond to target power requests, affect vehicle control effects, and slow engine torque response, etc., to achieve shortening Dynamic response time and speed stabilization time, improved feedforward and feedback control methods, and improved torque accuracy and response speed
Active Publication Date: 2020-02-07
宁波洁程汽车科技有限公司
View PDF6 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] Therefore, the above two control methods for the power output of the range extender respectively perform closed-loop control on the engine speed (torque), the generator torque (speed) and the output power of the range extender, so that the engine torque (speed) is calculated as the calibration value It is calculated that the dynamic response accuracy is poor; when the power point is switched, it will lead to slow response of engine torque (speed) and a long time for speed stabilization, making it difficult to correctly and timely respond to the target power request, which will affect the control effect of the vehicle. Improve
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0056] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Due to the calculation formula of power:
[0057] Power P=π*torque (M)*speed (n)
[0058] (π is a constant), so the calculated torque value = demanded power / (π*engine speed feedback value), and calculated speed value=demanded power / (π*generator torque feedback value). It should be noted that any feedback and request are the output or input corresponding feedback value and request value; and the generator torque feedback value and the torque calculation value input by the generator controller are the same value.
[0059] Such as figure 1 As shown, an existing control method for the power output of a range extender, the control method uses the engine as torque control, the generator as speed control, and the engine controller and generator controller are independent of eac...
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
Login to View More Abstract
The invention discloses a control system and method for fast response of power of a range extender for an electric vehicle, and relates to the technical field of fast response of power of the range extender. According to the key points of the technical scheme, the control system comprises an engine and a generator which are mechanically connected, wherein the engine is electrically connected withan engine controller, the generator is electrically connected with a generator controller, and the engine controller and the generator controller are simultaneously connected with the range extender controller. The control system and method has the generator torque feedback value obtained by enabling the engine controller and the generator controller to simultaneously use the generator torque feedback, the calibration torque algorithm of the engine controller is avoided, the generator torque feedback value of the generator torque feedback is directly adopted in the engine controller, and the dynamic response precision is obviously improved; when the power point is switched, the dynamic response time and the rotation speed stabilization time of the engine are obviously shortened, and the effect of improving the speed of the engine for power response and the follow-up of the power request is achieved.
Description
technical field [0001] The present invention relates to the technical field of quick power response of a range extender, and more specifically relates to a control system and method thereof for quick power response of a range extender for an electric vehicle. Background technique [0002] The range extender is an additional energy storage component used in extended-range electric vehicles to extend the mileage of electric vehicles. When the electric vehicle needs to be charged, the range extender starts, and the engine drives the generator to generate electricity, and its power generation is determined according to the demand of the whole vehicle. A range-extended electric vehicle is an electric vehicle that uses other energy sources (such as gasoline) to supply electric energy when the battery power is exhausted. Its main working feature is that it works in pure electric mode in most cases, and in a few cases in extended range mode, that is, the range extender generates el...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B60L50/62B60L15/20
CPCB60L15/20B60L50/62Y02T10/62Y02T10/70Y02T10/72
Inventor 孙强高强熊文雨冯翰湛勇刚
Owner 宁波洁程汽车科技有限公司