开关频率

采用DSP的三相整流器开关频率控制算法

Switching Frequency Control Algorithm in Three-phase Rectifier Using DSP

PWM整流器中开关频率固定方法的电流跟踪

Current Tracking of Switching Frequency Strategy in PWM Rectifiers

开关频率优化配置PWM电源控制器的研究

Study of an Optimized Switching Frequency PWM Controller for Power Supply

提出一种新颖的开关频率优化配置的PWM控制方案。

An optimized switching frequency PWM control strategy is presented in this paper .

PWM整流器的过调制固定开关频率控制方法

Fixed Switching Frequency Over-Modulation Control Method of PWM Rectifier

概述低开关频率PWM变频的问题及解决办法

Problems and Solutions of Low Frequency PWM Inverters-an Overview

零空间矢量和PWM开关频率对异步电机噪声的影响

Influence of Zero Space Vector and PWM Switching Frequency on Acoustic Noise of Induction Motors

基于PWM低开关频率选择性谐波控制方程组的实时算法

The Algorithm of Real-time Solution of Selective Harmonic Controlling Equations for PWM With Low Switching Frequency

一种固定开关频率型电流跟踪SPWM变频调速系统

A SPWM Frequency Control System With Fixed Switching Frequency and Current Tracing

开关频率抖动控制对DC/DC变换器EMI抑制研究

Research on Switching Frequency Jitter to the EMI Suppression of DC / DC Convert

SVPWM算法保证了逆变器的开关频率恒定。

The SVPWM algorithm keeps the switching frequency constant .

一种降低转矩脉动和开关频率的异步电机DTC控制方法的研究

Research on DTC control method of reducing torque ripple and switching frequence for induction motor

作者分析比较了目前常用的电流模拟滞环PWM控制和开关频率固定的PWM电流控制策略，采用了开关频率固定的PWM电流环的数字化控制。

After comparing the hysteresis current control and PWM control with constant frequency , the author proposed the PWM control with constant frequency .

SPWM控制波形质量好，功率管开关频率低但直流电压利用率低。

The SPWM control has a good waveform but the DC BUS voltage utilization is low .

最后研究了低开关频率下基于定子磁链轨迹跟踪的优化PWM开关角实时调整策略，解决了动态调速过程中使用离线计算的优化PWM模式引起的开关角紊乱、装置过流等问题。

Finally , a real-time switching angle adjustment strategy of optimal PWM based on stator flux trajectory control at low switching frequency is proposed .

提出采用多桥叠加结构的交流控制器抑制大容量PWM移相器的自身谐波发生量、降低装置开关频率及开关损耗；

Proposes a new multi bridge AC controller to restrict the harmonics generated by PWM phase shifter , and reduce switching frequency and loss .

由于补偿谐波次数较高，逆变器开关频率很高，由此造成了较大的开关损耗，给APF的直流电压控制以及散热带来一定困难。

Because of the need of harmonics compensation , there is a very high switching frequency in APF .

将采用PI调节器的直接电流控制方法和采用滞环比较器的直接功率控制系统进行对比，指出滞环环宽与开关频率的矛盾关系，提出一种开关频率限制方法。

By comparing to direct current control method using PI regulator , the contradictory relationship between the hysteresis-band and the switching frequency is analysed .

高速交流传动机车广泛采用高开关频率器件的脉宽调制（PWM）逆变器，使得逆变器输出脉冲具有陡上升沿。

PWM inverters with high switching frequency may shorten the rise time of PWM output pulses . They have been widely applied in high-speed AC driving locomotives .

采用0.35μm标准CMOS工艺设计了3.3V/1.5V单片低压Buck转换器，开关频率为150MHz。

A monolithic low-voltage 3.3 V / 1.5 V Buck converter with the switching frequency of 150 MHz was designed in 0.35 micron CMOS technology .

IGBT是电压控制型器件，开关频率高，损耗小，功率因数高等优点，且不会发生换相失败。

IGBT is a voltage-controlled device and has high switch frequency , low loss , high power factor and no phase change failure .

论文中还设计了一种新型的IGBT驱动电路，它具有开关频率高、驱动功率大、结构简单且具有负压关断的特点。

A new drive circuit for IGBT is designed . It features high switching frequency , high driving power , simple-structure and reverse-turn-off .

针对直接功率控制中开关频率变化问题，通过对PWM整流器瞬时功率分析推导，提出一种内环直接采用电流控制的新型准定频直接功率控制策略。

To alleviate the problem of variable switching frequency , a novel quasi DPC control strategy with current loop was represented through the analysis of PWM rectifier instantaneous power .

LC型无源滤波器能滤除逆变器开关频率附近的谐波分量，但会引起系统振荡；

LC passive filter can filtrate the harmonic components whose frequencies near the switching frequency of the inverter , but power system oscillation may be caused .

在平均电流控制的基础上提出了改进的预测电流控制策略，在当前周期内所有占空比由预测控制策略在前一个周期内预先产生，解决了开关频率与DSP处理速度之间的矛盾。

Predictive current control strategy , by which duty in the current cycle is generated in last cycle , is proposed to solve the problem between the switch frequency and DSP processing speed .

但目前，DTC的理论尚未发展成熟，实际应用中转矩脉动大，开关频率不固定等问题仍然没有得到很好的解决。

However , its theory is still immature and the disadvantages of large torque ripple and unfixed switching frequency are still unsolved .

通过载波相移SPWM控制，可在低开关频率时得到低交流谐波。

By using carrier phase-shifted SPWM control , the multi-modular converter can get low AC side harmonics even the switch frequency is low .

主要讨论了变频器中大功率器件GTR开关频率可靠性的提高。

This paper mainly discusses the increment of switching frequency and reliability of GTR in frequency converter .

本文给出一种适用于低电压高开关频率升压型DC-DC转换器的BiCMOS驱动电路。

This paper presents the design of a BiCMOS driver circuit for low voltage and high frequency boost DC-DC converter .

影响CMOS电路热载流子效应的因素有：晶体管的几何尺寸、开关频率、负载电容、输入速率以及晶体管在电路中的位置。

Factors leading to hot-carrier effects in CMOS IC 's include transistor size , switching frequency , load capacitance , input rate and the location of transistors in the IC .