6.1 Basic principles 6.2 Some major PWM techniques in DC/AC inverters 6.3 PWM techniques with feedback control 6.4 PWM rectifiers

§3.6 格林定理 泊松方程的积分公式 §3.8电介质的极化 . 极化强度 §3.10 恒定电流空间的基本方程、边界条件

Applications of Inverters Conversion of electric power from DC type energy sources to AC type load -Battery Photovoltaic cell (Solar cell) Fuel cell +As a part of composite converter AC-DC-AC frequency converter(for AC motor drive) AC-DC-AC constant-voltage constant-frequency converter(for uninterruptable power supplies)

第Ⅱ部分（招标程序） 第Ⅱ部分招标程序1电力工程设备招标程序主要流程 1.1电力工程设备执法标过程共分四个阶段，与此有关的还有招标前准备阶段和招标后履行合同阶段

一、电磁波的性质 二、电磁场的能流密度 三、电磁场的动量 四、赫兹实验 五、电磁辐射

PEREC Classification of ac to Ac converters Same frequency Variable variable magnitude AC power frequency AC power AC power AC controllers Frequency converters

第一章 词语涵义及合同文件 第一条 词语涵义 《电力建设工程施工合同》文本，由《电力建设工程施工合同条件》（以下简

3–1 结型场效应管 3–2 绝缘栅场效应管(IGFET) 3–3 场效应管的参数和小信号模型 3–4 场效应管放大器

3.1 Basic DC to DC converters 3.1.1 Buck converter(Step-down converter) 3.1.2 Boost converter(Step-up converter) 3.1.3 Buck-Boost converter(Step-downstep-up converter)and Cuk converter 3.1.4 Sepic converter and Zeta converter 3.2 Composite DC/DC converters and connection of multiple DC/DC converters 3.2.1 A current-reversible chopper 3.2.2 Bridge chopper (H-bridge DC/DC converter) 3.2.3 Multi-phase multi-channel DC/DC converters

2.1 Single-phase controlled rectifier 2.2 2 Three-phase- controlled rectifier 2.3 Effect of transformer leakage inductance on rectifier circuits 2.4 Capacitor-filtered uncontrolled rectifier 2.5Harmonics and power factor of rectifier circuits 2.6 High power controlled rectifier 2.7 Inverter mode operation of rectifier circuit 2.8 Thyristor-DC motor system 2.9 Realization of phase-control in rectifier circuits