Control Strategy of Dual-motor Nutation Coupling Drive System for Electric Bus

Cheng Pan; Ligang Yao; Junlin Lai; Can Cai; Xinxin Chen

doi:10.16578/j.issn.1004.2539.2021.07.007

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Control Strategy of Dual-motor Nutation Coupling Drive System for Electric Bus

Theory·Reserach | 更新时间：2022-11-10

- Control Strategy of Dual-motor Nutation Coupling Drive System for Electric Bus
- Journal of Mechanical Transmission Vol. 45, Issue 7, Pages: 42-52(2021)
- 作者机构：
  
  1.福州大学机械工程及其自动化学院，福建福州 350116
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2021.07.007
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潘成,姚立纲,赖俊霖等.电动客车双电机章动耦合驱动系统控制策略[J].机械传动,2021,45(07):42-52.

Pan Cheng,Yao Ligang,Lai Junlin,et al.Control Strategy of Dual-motor Nutation Coupling Drive System for Electric Bus[J].Journal of Mechanical Transmission,2021,45(07):42-52.
潘成,姚立纲,赖俊霖等.电动客车双电机章动耦合驱动系统控制策略[J].机械传动,2021,45(07):42-52. DOI： 10.16578/j.issn.1004.2539.2021.07.007.

Pan Cheng,Yao Ligang,Lai Junlin,et al.Control Strategy of Dual-motor Nutation Coupling Drive System for Electric Bus[J].Journal of Mechanical Transmission,2021,45(07):42-52. DOI： 10.16578/j.issn.1004.2539.2021.07.007.

摘要

为了降低纯电动汽车的能量消耗，提高电动汽车的续驶里程，以一种新型双电机章动耦合动力系统为研究对象，提出了以最小电功率为目标的控制策略。基于整个控制策略框架，将控制策略分为上、中、下3层。上层控制策略为需求转矩计算，根据驾驶员意图、道路信息、电池信息等，准确获取汽车的需求转矩；中层控制策略为驱动模式划分和功率分配，模式划分依据以车速作为逻辑门限值，以最小电功率为目标制定双电机转速转矩分配策略，实现双电机动力系统功率分配；下层控制策略为模式切换过程控制，为减小模式切换的动力落差，在单电机模式切换至双电机模式过程中，采用降功率方法处理。最后，在Matlab/Simulink中建立双电机动力耦合系统仿真模型，验证了该控制策略的可靠性。

Abstract

In order to reduce the energy consumption of pure electric vehicles and improve the driving range of electric vehicles， a new dual-motor nutating dynamic coupling system is taken as the research object， and a control strategy with the minimum electric power as the target is proposed. Based on the entire control strategy framework， the control strategy is divided into upper， middle， and lower layers. The upper control strategy is the calculation of demand torque. According to the driver's intention， road information， battery information， etc.， the vehicle's demand torque is accurately obtained. The middle control strategy is drive mode division and power distribution. The mode division is based on the vehicle speed as the logical threshold and the minimum electric power as the target to develop a dual-motor speed and torque distribution strategy to achieve dual-motor power system power distribution. The lower-level control strategy is mode switching process control. In order to reduce the power drop of mode switching， in the process of switching from single motor mode to dual motor mode， power reduction processing is adopted. Finally， a simulation model of dual-motor dynamic coupling system is established in Matlab/Simulink， which verifies the reliability of the control strategy.

关键词

电动客车双电机章动控制策略

Keywords

Electric busDual-motorNutationControl strategy

references

张运昌.纯电动轿车双电机耦合驱动系统构型与控制策略研究［D］.长春：吉林大学，2015：16-17.

ZHANG Yunchang.Configuration and vehicle control strategy study on dual-motor coupled driving system for pure electric vehicle［D］.Changchun：Jilin University，2015：16-17.

胡明辉，陈爽，曾剑峰.双电机耦合系统驱动模式切换控制策略研究［J］.机械工程学报，2017，53（14）：59-67.

HU Minghui，CHEN Shuang，ZENG Jianfeng.Coord-inated control for mode-shift of dual-motor coupling powertrain［J］.Journal of Mechanical Engineering，2017，53（14）：59-67.

HU M H，ZENG J F，XU S Z，et al.Efficiency study of a dual-motor coupling EV powertrain［J］.IEEE Transactions on Vehicular Technology，2015，64（6）：2252-2260.

TSENG S K，TSENG C C，LIU T H，et al.Wide-range adjustable speed control method for dual-motor drive systems［J］.IET Electric Power Applications，2015，9（2）：107-116.

LIN C，ZHAO M J，PAN H，et al.Energy management for a dual-motor coupling propulsion electric bus based on model predictive control［J］.Energy Procedia，2019，158：2744-2749.

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