基于开绕组电机的增程式电动车动力系统构型及其功率分配

doi:10.13229/j.cnki.jdxbgxb20190955

Abstract

Abstract:

A new type of electric vehicle powertrain configuration was proposed in order to make use of the flexibility of open-winding permanent magnet synchronous motor in power distribution between dual energy sources， and realized the process from power distribution instruction formation to instruction following under this configuration. First， an expected power calculation method based on fuzzy control is proposed to make the main energy source work in high efficiency zone. Then， at the level of motor control， based on the voltage vector model of dual inverters， two distribution methods， namely precise power following and linear distribution， are proposed to realize the expected power following of primary and secondary energy sources. The simulation results show that under the voltage vector distribution method， the motor speed and torque follow well， and the torque fluctuation is limited within 3 N·m.

Key words: extended-range electric vehicles, open winding motor, fuzzy control, vector control, power allocation

CLC Number:

TM351

Liang CHU,Li-jia DONG,Nan XU,Li-feng ZHANG,Yi-fan JIA,Zhi-hua YANG. Powertrain configuration and power distribution of extended electric vehicle based on open winding motor[J].Journal of Jilin University(Engineering and Technology Edition), 2021, 51(1): 72-82.

Figures/Tables 23

Fig.1

Fig.2

Fig.3

Table 1

Fig.4

Table 2

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

Table 3

Sector division"

N	$θ$ /(o)	N	$θ$ /(o)
1	[0,60]	4	[180,240]
2	[60,120]	5	[240,300]
3	[120,180]	6	[300,360]

Table 3

Table 4

Each sector corresponds to the analytic formula"

扇区号	解析表达式	扇区号	解析表达式
1	$y = - 3 x + 2 V d c$	4	$y = - 3 x - 2 V d c$
2	$y = 2 / 2 V d c$	5	$y = - 2 / 2 V d c$
3	$y = 3 x + 2 V d c$	6	$y = 3 x - 2 V d c$

Table 4

Fig.10

Fig.11

Fig.12

Fig.13

Table 5

Basic parameters of drive system"

对象	类型	参数
求解器	求解类型	离散系统
求解器	采样时间 $T s$ /s	5 × 10^-7
电机	电机类型	永磁同步电机
	极对数 $p 0$	4
	定子电阻 $R s$ /Ω	0.1
	永磁磁链的基本幅值 $ψ f$ /Wb	0.2
	额定转速/(r·min^-1)	8000
	额定转矩/(N·m)	85
	最大功率/kW	80
	d轴、q轴电感[ $L d$ , $L q$ ]/F	[0.0012,0.0015]
	转子的转动惯量 $J m$ /(kg·m^-2)	0.011
	库伦黏性阻力系数	[0.001,0.0005]
逆变器	导通电阻 $R o n$ /Ω	0.01
	前向压降 $V f$ /V	0.8
	每相电流容量 $i m a x$ /A	160
能量源	主、次能量源直流母线电压[ $V d c 1$ , $V d c 2$ ]/V	[300,200]

Table 5

Table 6

Voltage vector distribution mode"

电压矢量分配模式	具体情况	模式号
精确功率跟随	逆变器1功率跟随偏差 $D P i n v 1_A F = 0$	0
精确功率跟随	逆变器1功率跟随偏差 $D P i n v 1_A F ≠ 0$	-1
线性分配方法	逆变器1功率跟随偏差 $D P i n v 1_L P = 0$	-2
	逆变器1功率跟随偏差 $D P i n v 1_L P ≠ 0$ ，但 $u s * ?$ 可以被合成	-3
	$u s * ?$ 无法被合成	-4

Table 6

Fig.14

Fig.15

Fig.16

Fig.17

References 18

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SOC	需求功率	逆变器1期望功率
高	低	低
高	较低	低
高	中	低
高	较高	低
高	高	较高
中	低	低
中	较低	低
中	中	低
中	较高	较高
中	高	较高
低	低	低
低	较低	中
低	中	中
低	较高	较高
低	高	高

参数	数值
长×宽×高/mm×mm×mm	4600×1785×1435
整备质量/kg	1550
满载质量/kg	1930
迎风面积/m²	2.56
空气阻力系数	0.28
轮胎滚动半径/mm	307
电池组持续放电功率/kW	660
滚动阻力系数	0.015
减速器总速比	88.28
发动机额定功率/kW	555
传动系效率	0.95
电机最大功率/kW	80

Powertrain configuration and power distribution of extended electric vehicle based on open winding motor

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