2) 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。
3) high frequency switch
高频开关
1.
The high frequency switch technology of large power is developed successfully by the perfect control of PWM (Pulse Width Modulation) and ZCC(Zero Current Control), ZVC(Zero Voltage Control) in the unit.
通过PWM（脉宽调制）和ZCC（零电流控制）、ZVC（零电压控制）的完整控制，成功开发应用了大功率高频开关技术。
2.
high frequency switching type potentiostat.
文章以宁海污水站外加电流阴极保护为例,介绍了一种新型阴极保护电源——高频开关式恒电位仪的主要特点和原理。
3.
The paper analyses relatively advantages and disadvantages of phase control converter and high frequency switch used in DC power supply systems,and accomplishes the design of converter station DC power supply system with centralized monitoring function.
文章分析、比较了直流电源系统中应用的相控整流装置和高频开关装置的优缺点;结合高频开关电源装置应用,设计了能实现集中监控的换流站直流电源系统并予实施。
4) frequency switcher
换频开关
5) switching frequency
开关频率
1.
Selection of phase-shift SPWM switching frequency
载波移相SPWM开关频率的选取
2.
Hysteresis control has disadvantage of unstable switching frequency.
滞环控制方法存在开关频率变化不定的缺点。
3.
To reduce the switching frequency and current error of a static synchronous compensator (STATCOM) for reactive power compensation, a novel direct current control strategy is proposed.
提出一种适用于STATCOM的直接电流控制新方法以减小开关频率和电流跟踪误差。
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