7年的使用实践表明，直流脉动电压频率调制技术对抑制声谐振现象十分有效。
The7years 'applicable practices indicate that the frequency modulation technology with dc bus voltage ripples is very effective to suppress acoustic resonances.
该产品广泛使用于彩电、程控交换视机、计算机、电话机、传真机及仪器、 仪表电 路中作直流脉动、脉冲及低压交流功能之用。
Largely used in color tv, program-controled exchange machine, computer, telephone. fox and the instrumental circuit for the purpose of DC, impulse and AC at low voltage.
另外，还对滤波器的结构和参数对输出直流电压脉动和发电机相电流波形的影响及相电流谐波进行了仿真分析。
In addition, the thesis analyzes the influence of the filter structure and parameters on the output DC voltage ripple and the shape of phase currents, as well as harmonics of phase currents.
使用的机器通常是单相脉动直流，最古老，最简单的排序。
The machines used are typically single-phase pulsating DC, the oldest and simplest sort.
因此，对无刷直流电动机的应用，必须考虑其转矩脉动的抑制问题。
So the compensation of pulsating torque is very importance for the application of PMSMs.
为抑制飞轮储能系统驱动电机——高转速无刷直流电机能量回馈时的转矩脉动，提高系统的稳定性，提出一种适合高转速飞轮储能单元回馈制动的控制方法。
An energy feedback control scheme was developed for high speed brushless direct current motors used in flywheel energy storage systems to restrain the pulsating torque and improve the stability.
各种直流，脉动，高频较大电流场合，广泛应用于要求高频率，高电流，高稳定性的电器。
Used in all kinds of direct current, impulse, high frequency and heavy current occasions, widely used in electric appliance that require high frequency, heavy current and high stability.
分析了永磁无刷直流电机换相原理，提出了一种换相电流预测控制方法以抑制换相转矩脉动。
A commutation current prediction control scheme was proposed in brushless DC motor (BLDCM) to suppress the commutation torque ripples.
用途：广泛用于各种节能灯、镇流器、仪器和通讯设备的直流及脉动电路中。
Uses: Extensively apply to dc and pulse circuit of broadcasting and TV sets. all kinds of instruments and telecommunication equipments and energy saving lamps.
介绍了无刷直流电机控制系统中的四种PWM调制方式，详细分析了四种不同的调制方式对无刷直流电机换相转矩脉动的影响。
Four PWM modes used in the brushless DC motor control system are introduced and their different influences on the commutation torque ripple of BLDC motors are analyzed in detail.
在永磁无刷直流电机中，转矩脉动是需要解决的主要问题之一。
To permanent magnetic brushless direct current motors, torque tipple is one of the major problems to be solved.
的直流电压的脉动或纹波可以除去用适当的过滤器。
The pulsations or ripple of the DC voltage can be remove with the proper filter.
适用于移动通讯、计算机、各种消费电子、汽车电子等各种电子设备的表面贴装直流或脉动电路。
For mobile communications, computers, various consumer electronics, automotive electronics and other electronic devices, surface mount DC or pulsing circuit.
本文详细分析了在异步调制下，直流电压的二次脉动对逆变器输出电流以及电机转矩的影响。
This paper analyses the influence of the rippled DC voltage to the output voltage of the inverter and the motors.
目前国内外电动车直流驱动功率变换器使储能电源输出电流从零到电机电枢电流高频脉动，不利于延长动力电池的使用寿命。
At present power converters of DC driving system make power supply outputs a high-frequency pulsating current, which is from zero to the armature current. This large ripple damages batteries.
同时，设计了用于牵引逆变器控制的二次数字陷波器以及低通滤波器滤除直流电压信号的二次脉动。
Simultaneously, the second order notch filter and low-pass filter are designed to filter the second order rippled DC voltage signal.
原油形式，切碎，脉动直流电流从传统充电器生产效率较低的收费。
The crude form, chopped, pulsating DC current from conventional chargers produces a less efficient charge.
利用三脉动换流器模型对三峡-广东直流输电系统直流侧谐波进行了计算，并对三脉动换流器模型进行了分析。
The three pulse converter model is analyzed, and using this model the harmonics at the DC side of three GorgesGuangdong DC power transmission system is calculated.
但是，无刷直流电动机运行中存在转矩脉动问题，对实现更精确的位置和更高性能的速度控制有极大影响。
But the BLDCM has the disadvantages of torque pulsation, which is in the way of achieving accurate position and speed of higher performance.
依据永磁无刷直流电动机的数学模型及其转矩特性，分析了转矩脉动产生的多种原因，并介绍了各种有效的控制策。
According to the mathematical model and torque characteristics of permanent magnet brushless DC motor, the reasons that give rise to torque ripple have been analyzed in this paper.
发现了手摇交流发电机演示实验中出现脉动直流电的奇异现象并对此作出了合理的解释。
The phenomenon of a pulsating direct current in demonstrative experiment of hand alternator is founded and the reasonable explanation is presented.
交流发电机输出的直流电动势会有较大的脉动电压。
The DC electromotive force output by AC generator can have quite big pulsating voltage.
同时针对系统中的关键部分无刷直流电机采取了全面优良的控制策略，包括转速外环电流内环双闭环调速控制，死区补偿，换相脉动分析等。
The Brushless DC Motor, important part of the system is well controlled including two-closed-loop control method, compensation for dead-time and analysis of fluctuation about swapping phases.
高速条件下，无刷直流电动机的电流换向产生严重滞后，导致转矩下降并伴随脉动。
Serious commutation lag occurs when a Brushless DC Motor (BLDCM) operates at high speeds, and this leads to torque decline with ripple.
本文从永磁无刷直流电动机的基本工作原理出发，分析了引起转矩脉动的原因并建立无刷直流电动机的动态数学模型。
From the basic operation principles of the permanent magnet brushless DC motor, this paper analyses the producing reasons of torque pulsation and establishes the mathematical model.
本文的研究工作对方波无刷直流电机转矩脉动抑制有积极意义。
The research have positive meaning for the torque ripple control technology utilized in BLDCM.
本文的研究工作对方波无刷直流电机转矩脉动抑制有积极意义。
The research have positive meaning for the torque ripple control technology utilized in BLDCM.
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