1) random switching frequency
随机开关频率
1.
In order to further resolve the noise problem brought by AC drive system powered by frequency converter,an innovational resolution which can realize the randomization of switch frequency named a variable-delay random PWM(VDRPWM)method,combined random switching frequency and space vector modulation technique for three-phase inverters is proposed here.
本文针对变频器供电交流传动系统带来的噪声问题,提出了一种随机开关频率与空间电压矢量调制结合的新方法,即可变延迟开关周期PWM方法(VDRPWM),以实现开关频率随机化;并以某型电机的变频器为研究对象,设计了三相空间电压矢量控制的电机系统。
2.
The modulation method of random switching frequency based on stationary switching frequency is given.
固定频率的SVPWM脉冲信号的谐波主要集中在其开关频率附近,且幅值较大;随机开关频率SVPWM脉冲信号的谐波分布均匀,且其谐波幅值的峰值较前者有了很大下降。
2) random pulse width modulation
随机开关频率PWM
3) random frequency PWM inverter
随机开关频率脉宽调制逆变器
4) random frequency
随机频率
5) random switching
随机开关
1.
Chaotic signals generated from"Chua s circuit"is reformed and used to modulate the switching of Buck dc/dc converter operating in random switching mode based on chaos controlling.
随机开关调制技术可以降低开关模式电源电磁干扰 (EMI)水平。
6) switch frequency
开关频率
1.
Selection of switch frequency in direct current electromotor PWM modulation.;
极压仪中直流电动机PWM调速下开关频率的选取
2.
The DC-DC convertor features high switch frequency up to 1MHz using ultra-small inductors and ceramic capacitors.
应用PWM设计高可靠DC-DC变换器,其开关频率更高,可达1 MHz,这样减小了储能元件的尺寸,可采用陶瓷电容器,提高系统的可靠性,降低了成本。
3.
The reason of output current distortion is analyzed;and a new way to resolve the problem is put forward;it is controlling switch frequency changing in different sections according to system run state.
分析了引起输出电流畸变的原因,并提出可根据系统工况分段控制开关频率的方法来解决由这些原因引起的输出电流畸变。
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条