In this design, the collector-to-emitter voltage is sensed to determine the directions of the output currents for the 4-step commutation strategy.
该文检测器件集射极电压确定输出电流方向，并据此实现四步换流。
The paper analyzes in detail the synthetical method, the voltage gain and the switch action sequence of matrix converter based on the zero-output commutation strategy.
该文对零输出换相策略、电压增益及开关动作顺序进行了详细的分析，并与双电压合成控制策略下共模电压的最大瞬时值进行了对比。
The results of the experiment successfully show that it can realize the modulation of the frequency of the output voltage. meanwhile, it validates the feasibility of four-step commutation strategy.
实验结果表明本实验装置系统能成功实现对输出电压和频率进行调节，进一步验证了四步换流技术的可行性。
This thesis discusses principal issues of the matrix converter such as prime principle, control strategy, current commutation, its applications etc.
本文立论研究的目的是对矩阵式变换器基本原理、控制策略、开关换流、应用范围等基本性问题进行探索性研究工作。
A strategy controlling winding commutation directly to control motor is proposed with respect to the principle of machine.
分析了稀土永磁无刷直流电机原理特性，提出了一种通过直接控制绕组换向时间进而控制电机转速的方法。
To guarantee safe commutation, a four stepped switching strategy is realized by using programmable logic devices.
主电路采用反向串联的双向IGBT开关，用可编程逻辑元件实现四步切换，以保证安全换流。
To guarantee safe commutation, a four stepped switching strategy is realized by using programmable logic devices.
主电路采用反向串联的双向IGBT开关，用可编程逻辑元件实现四步切换，以保证安全换流。
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