| 1. | The paper analyzes the wave figures before installing device and after it
分析装置安装前后的电压电流波形图、谐波含量及瞬流情况。 |
| 2. | At the same time svm arithmetic is studied and the distortion of current wave form in voltage type pwm system analysed
对svm算法进行了研究，并对电压型pwm电流波形失真的问题作了分析。 |
| 3. | For the current source supply , the current waveforms are much easy to control though it has more complicated main circuit and more voltage harmonics
电流源方式主回路比较复杂(需要将电压源转换为电流源) ，但电机电流波形容易控制， emi问题容易解决。 |
| 4. | The device has considered its practical functions , which include chinese character parameter , waveform display for three - phase current , fixed value and retain of failure information
装置考虑了实用功能设计。具有汉字参数、三相电流波形显示，整定值、故障信息的保留等功能。 |
| 5. | However , the waveforms of motor currents are difficult to control . the harmonic components of the current will produce torque pulsation , additional losses and some emi problems
电压源方式主回路比较简单，但电流波形难以控制，且谐波所带来的转矩脉动和损耗比较大， emi问题难以解决。 |
| 6. | This device can not only on - line monitor all kinds of parameters of moa in serve , but also display resistive current waveform , lisaru curves , and ac volt - ampere characteristic curves
该装置能够完成对moa各项参数的在线监测，而且还能显示阻性电流波形、李萨如曲线、交流伏安特性曲线。 |
| 7. | The input of traditional ac - dc converter is diode - capacitance combined circuit . it ? input current wave presents pulse shape , and the power factor ( pf ) on ac line side is low
传统的ac ? dc开关变换器输入端是二极管整流-滤波电容组合电路，其输入电流波形呈脉冲状，交流网侧功率因数很低。 |
| 8. | An output filter between the output end of inverter and the power network is added to improve the quality of output current . the design of the filter is discussed in detail
提出了在逆变器输出端和电网间加输出滤波器的技术措施，并详细讨论了滤波器的设计，从而改善了输出电流波形的质量。 |
| 9. | The mc controlled by this strategy not only achieves the dtc of asynchronous machine with excellent dynamic performance but also acquires good input currents and an adjustable power factor
按这种策略进行控制的矩阵式变换器，既可实现对异步电机进行动态性能优良的直接转矩控制，又可获得良好的输入电流波形以及可调的功率因数。 |
| 10. | But because ct at the time of the saturations have the complicated in wave form electric current , how correct to judge the saturations constantly , determine ct their the linear to spread becoming area protection of difficult point it be
但是由于ct饱和时电流波形复杂，如何正确判断ct饱和时刻、测定其线性传变区一直是此类保护的难点所在。 |
