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Power generation control method of extended range type electric automobile

A technology for electric vehicles and power generation control, applied in electric vehicles, control drive, electric traction, etc., can solve the problems of short driving range, low battery energy density, high cost, etc., and achieve fast control, timely assurance and high efficiency Effect

Active Publication Date: 2014-12-10
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low battery energy density and high cost of pure electric vehicles, the driving range of the vehicle is short, which has become an important shortcoming in the development of pure electric vehicles.

Method used

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  • Power generation control method of extended range type electric automobile

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Embodiment Construction

[0022] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment among various implementations of the present invention.

[0023] First, the generator control unit drives the engine to the target power generation speed according to the requirements of the vehicle control unit; then, the vehicle control unit calculates the target power generation torque according to the power generation speed and target power generation, and sends it to the engine control unit for the power generation machine loaded. The generator control unit adjusts the three-phase current in real time, executes the closed-loop control of the speed, and realizes power generation.

[0024] Using the method of vector control, according to the speed change caused by load fluctuation, the required generator stator current is decoupled into two specific reference target quantities of direct axis component idref and quadrature axis component iqre...

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Abstract

The invention relates to a power generation control method of an extended range type electric automobile. A control unit of a generator is used for controlling the generator to drag an engine to target power generation rotation speed; when the engine operates to the target power generation rotation speed point and is steady, a whole vehicle control unit requests power generation torque from the control unit of the engine so as to load the generator; by taking the power generation rotation speed as a control target, the control unit of the generator conducts PID (Proportion Integration Differentiation) closed-loop adjustment by adopting a vector control method, so that target power is obtained; and conversion and utilization of energy can be realized.

Description

technical field [0001] The invention relates to a vehicle power system, in particular to a control method for a power generation control system of an extended-range electric vehicle. Background technique [0002] Currently, the environment and energy are becoming a growing concern. In the field of automobiles, pure electric vehicles with high efficiency, energy saving and environmental protection have become one of the development trends of the automobile industry. However, due to the low battery energy density and high cost of pure electric vehicles, the driving range of the vehicle is short, which has become an important shortcoming for the development of pure electric vehicles. Therefore, the development of the range-extended electric vehicle that contains the mileage booster has attracted more and more attention from the industry. [0003] Range-extended electric vehicles rely on a mileage booster to charge the power battery to increase the driving range of the electri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L11/06B60L15/00B60L50/12
CPCY02T10/7077Y02T10/7072
Inventor 王金磊罗晓陈立冲王瑛蔡交明
Owner CHERY AUTOMOBILE CO LTD