句子分析：
句中that send current from…to power the drive wheels 是drivers的定语从句。move 前省略to，它与energize并列。to energize the stator coils and move the rotor to power the drive wheels是定语从句的状语，说明电流流动的结果。本句的定 于从句太长，单独译出。
3.3 Motor Control System (controllers) 电动机控制系统
inverter assembly
逆变器总成
motor control module (MCM) 电动机控制模块
motor controller
电动机控制器
power drive unit (PDU)
动力驱动单元
乘用车，载客车辆 永久磁铁 发电厂，动力装置 串励式直流发电机 同步交流电动机
提问
What are the two types of motor? 电动机分为哪两种类 型？
What are the types of motors commonly used in electric vehicles?电动汽车常用的电动机分有哪几种类型？
3.3 Motor Control System (controllers) 电动机控制系统
Figure 3.10 A typical Honda PDU controls the current and voltage through the stator windings of the DC motor
电枢绕组 异步交流电动机 励磁电流 磁场绕组 汽车，机动车 电阻损耗
3.1 Types of Traction Motors 牵引电动机的类型
passenger vehicle permanent magnet power plant series-wound DC motor synchronous AC motor
疑难句子分析
*1 The IGBTs are current drivers that send current from the battery pack through the stator windings to energize the stator coils and move the rotor to power the drive wheels.
Chapter 3 Traction Motors and Controllers 牵引电动机与控制器
本次课学习内容
3.3 Motor Control System (controllers) 电动机 控制系统； 3.4 Service and Testing 维护与测试
本次课学习目标
1.掌握电动机控制器的功能、基本原理； 2.了解电动机控制器维护； 3. 掌握相关英文术语
·The pulse width and voltage is adjusted to change the power output to match the demands of the vehicle for electric assist or propulsion.
参考译文：
IGBT是电流驱动装置，它们让电流从电池组传送出去，并通过 定子绕组，让定子线圈励磁，从而使转子运动，带动驱动轮旋转。
3.3 Motor Control System (controllers) 电动机控制系统
Each IGBT has a diode connected in parallel between the collector and the emitter, as shown in Figure 3.10. These six diodes work together to rectify stator AC to pulsating DC to charge the high-voltage batteries when the DC electric drive motor becomes a generator during regenerative braking.
3.4 Service and Testing 维护与测试
本章学习目标 本章难点重点
1.掌握重要的牵引电动机和控制器的基本英文术语； 2.掌握牵引电动机和控制器的结构、原理和维护； 3.了解牵引电动机和控制器维护
1.重点：电机结构及控制原理，英文专业术语； 2.难点：基本术语
回顾
3.1 Types of Traction Motors 牵引电动机的类型
emitter
[ɪ'mɪtə]
rectify
['rektɪfaɪ]
spike
[spaɪk]
synchronize ['sɪŋkrənaɪz]
transformer [træ ns'fɔ:mə(r)]
n.振幅 n.集电极 n.发射极 vt.整流 n.峰，尖峰，尖端 vt.使同步 n.变压器
3.3 Motor Control System (controllers) 电动机控制系统
· The speed of the motor is changed by changing the frequency of the applied current. The speed is synchronized to the frequency so when the frequency is changed, the speed changes.
Permanent magnet brushless DC motor AC asynchronous motor AC synchronous motor
3.1 Types of Traction Motors 牵引电动机的类型
armature winding asynchronous AC motor excitation current field winding motor vehicle ohmic loss
3.3 Motor Control System (controllers) 电动机控制系统
3.3.2 Permanent magnet AC motor controller
In most hybrid electric vehicles, traction AC motor is controlled as follows:
boost converter current driver DC-to-DC converter driver circuit electric drive motor insulated gate bipolar transistor (IGBT)
பைடு நூலகம்
升压转换器 电流驱动器 直流-直流转换器 驱动电路 驱动电动机 绝缘栅双极晶体管
3.3 Motor Control System (controllers) 电动机控制系统
The current flow through the PDU is controlled by six insulated gate bipolar transistors (IGBTs). Three of these transistors control the voltage side of the circuit and are called positive or high-side IGBTs. The other three transistors are negative or low-side IGBTs because they are on the negative (ground) side of the stator coils. The base of each IGBT connects to an input terminal in the connector to the PDU. The IGBTs are current drivers that send current from the battery pack through the stator windings to energize the stator coils and move the rotor to power the drive wheels.*1
Chapter 3 Traction Motors and Controllers 牵引电动机与控制器
本章学习内容
3.1 Types of Traction Motors 牵引电动机的类型 3.2 Construction and Principle 结构与原理 3.3 Motor Control System (controllers) 电动机 控制系统
What are the main components of the basic structure of electric motor used in electric vehicles? 电动汽车用电动机的基本结构主要由哪些部件构成？
提问
armature winding asynchronous AC motor excitation current field winding permanent magnet series-wound DC motor
Two types of electric motor are commonly used in electric vehicles:
direct current (DC) motor alternating current (AC) motor
3.2 Construction and Principle 结构与原理
本章难点重点
1.重点：控制器构成原理及相关英文专业术语； 2.难点：基本术语