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1·To facilitate the theoretical analysis, Two-way bridge arm new concept is presented.

为便于理论分析，提出了“双向桥臂”概念。

2·The single bridge arm has advantages of light weight, simple and reliable structure and less space.

该单桥臂具有重量轻、结构简单可靠，占用空间少等优点。

3·A new current detection method is introduced aimed at lower bridge arm modulation when motor is operating at six states.

针对三相六拍两两导通且下桥臂开关管调制方式提出了新型电流检测方案。

4·Voltage waves are deduces on lower bridge arm PWM modulation and theory of rotor position detection based on EMF is introduced.

分析了下桥臂调制方式下绕组端电压波形，并基于此介绍了反电势法检测转子位置原理。

5·This paper gives the best method in configuring the bridge arm to improve the sensibility of the AC bridge by way of theoretical deduction and experiment.

通过理论和实验证明，阐述了提高交流电桥灵敏度的桥臂最佳配置方法。

6·This method can reduce monitoring points, get more concise criterions of fault types and has many other advantages when it is used to on-line monitor and diagnose SSFCL bridge arm fault.

该方法用于在线监测、诊断桥式固态限流器整流桥桥臂故障，具有监测量更少、得到的故障判据更简洁等诸多优点。

7·Theoretically analyzed the cause of the non-conduction phase current with the PWM method of upper and lower bridge arm chopping by turns, and made some experiments to verify its validity.

结合上下桥臂轮流斩波PWM调制方式，从理论上分析了不导通相电流产生的原因，并进行了实验研究，表明不导通相电流的大小与不导通相的反电势大小有关。

8·Compared with single bridge, the relationship between the arm resistance of double bridge and its sensitivity can be determined. Therefore, the rule for selecting arm resistance is obtained.

通过与单电桥相比，得出双电桥桥臂电阻与电桥灵敏度的关系，从而确定了双电桥桥臂电阻选择的原则。

9·In order to restrict the rising rate of fault current caused by short circuit on one arm of bridge of inverter, a kind of device named current loop protection circuit can be adopted.

为了限制逆变器桥臂直通短路时故障电流的上升率，可以在装置的直流侧安装一种称为“环流保护电路”的附加电路。

10·Compared with single bridge, the relationship between the arm resistance of double bridge and its sensitivity can be determined.

通过与单电桥相比，得出双电桥桥臂电阻与电桥灵敏度的关系，从而确定了双电桥桥臂电阻选择的原。