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pulsating torque
相关语句
  脉动转矩
    Study on Pulsating Torque of Single - phase Permanent - magnet Synchronous Motor at Variable Frequency Operation
    单相永磁同步电动机变频调速的脉动转矩研究
短句来源
    Although DTC have made fast progress in recent year, it has disadvantage in the theory and performance that not good at low speed operation and having serious pulsating torque .
    近年来DTC的研究虽然已经取得了很大的进展,但是它在理论和实践上还不够成熟,如低速性能差、脉动转矩大。
短句来源
    The pulsating torque can be reduced by improving current wave form of the inverter, such as a pulse-width modulated wave, increase of the number of stator phases and increase of the slip frequency, which can effectively reduce the amplitude of the torque pulsatin
    脉动转矩可采用改善逆变器输出电流波形的方法来抑制。 如脉宽调制法,增加定子相数,转差频率增加法等都可有效的抑制脉动转矩
短句来源
    In order to elirninate the influence of pulsating torque,this system operates in PWM model at lower frequency;
    为消除脉动转矩对电机运行性能的影响,系统在低频时以 PWM 方式工作.
短句来源
    A formula of harmonic current amplitude for CSI PWM is derived in this paper. An objective function of pulsating torque is also derived.
    本文推导出电流源逆变器(CSI)脉宽调制(PWM)谐波电流幅值表达式,脉动转矩目标函数。
短句来源
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  脉振转矩
    Analysis and computation of pulsating torque of single-phase permanent-magnet synchronous motor
    单相永磁同步电动机脉振转矩的分析和计算
短句来源
    Combined with the state-space model, the pulsating torque during starting process is analyzed.
    结合状态空间数学模型,对起动过程中的脉振转矩进行了分析和计算。
短句来源
  转矩脉动
    Pulsating Torque Minimization Techniques for Brushless DC Motor
    无刷直流电动机的转矩脉动控制技术
短句来源
    This paper addresses on the problem of the compensating techniques of pulsating torque in PMSMs.
    本文从无刷直流电动机及其控制系统的基本结构出发,对转矩脉动及其补偿方法进行了较为细致的分析。
短句来源
    4. The pulsating torque components caused by stator current divergence from ideal conditions are studied.
    4、对系统相电流存在直流偏差和波形、相位偏差时的电磁转矩进行了研究,得出以下结论:相电流直流偏差会产生与基波频率一致的转矩脉动
短句来源
    5. The principle of compensating pulsating torque is proposed.
    5、分析研究了转矩脉动补偿的基本原理,得出结论:在定子相电流中加入一定频率、幅值和相位的谐波电流就能消除某一转矩谐波。
短句来源
    A pulsating torque component can be compensated by inject a selected harmonic component to the phase current.
    消除转矩脉动可以通过对定子电流加入谐波的方式完成。
短句来源
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  “pulsating torque”译为未确定词的双语例句
    So the compensation of pulsating torque is very importance for the application of PMSMs.
    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。
短句来源
    3. With Fourier decomposition, the main component of pulsating torque, torque ripple is studied. It can be determined that torque ripple is caused by harmonic order 6n under the usual common conditions.
    3、对造成转矩脉动的主要成分转矩纹波进行谐波分析,得出在一般假设情况下,无刷直流电动机系统的转矩纹波由电磁转矩的±6n次谐波造成的结论。
短句来源
    8. A pulsating torque minimization approach based on disturbance observer is proposed.
    8、设计了一种新型干扰观测器,对其控制结构进行了理论分析。 以此为基础,
短句来源
    SVPWM technique have many good qualities, such as less pulsating torque, high usage of DC bus voltage, less switching loss, better high-speed regulation performance.
    SVPWM具有较高的直流电压的利用率,开关损耗小,从而实现了高性能的逆变输出。
短句来源
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  pulsating torque
The pulsating torque generated by the multi-cylinder engines is one of the major sources of vibration.
      
The net effect of the pulsating torque on the overall performance of the system can only be assessed by experimentation.
      
The effects of a DC current component may be some pulsating torque and overheating.
      
The effects of DC current component may be some pulsating torque and overheating.
      
The agreement between the pulsating-torque amplitude derived from the closed-form analysis, the simulation, and experimental tests is very good.
      
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This paper discusses the pulsating toques of invetr er-fed induction motor which produced by the interaction of harmonic rotating fluxes with harmonic rotor current of a different order.The principal pulsating torques arise from the interaction between the fundamental rotating flux and the harmonic rotor currents. Their presence causes the change of the angular velocity of the rotor during a revolution. At very low speed, a series of jerks or steps takes place in the motor rotation, Therefore, the presence...

This paper discusses the pulsating toques of invetr er-fed induction motor which produced by the interaction of harmonic rotating fluxes with harmonic rotor current of a different order.The principal pulsating torques arise from the interaction between the fundamental rotating flux and the harmonic rotor currents. Their presence causes the change of the angular velocity of the rotor during a revolution. At very low speed, a series of jerks or steps takes place in the motor rotation, Therefore, the presence of pulsating torques may set a lower limit to the useful range of the motor speed. The pulsating torque can be reduced by improving current wave form of the inverter, such as a pulse-width modulated wave, increase of the number of stator phases and increase of the slip frequency, which can effectively reduce the amplitude of the torque pulsatin

本文论述了逆变器供电的异步电动机的脉动转矩是由谐波旋转磁通和不同次数的转子谐发电流相互作闸而产生的。主要脉动转矩是由基波旋转磁通和谐波电流相互作用产生的。脉动转矩的出现造成转子转一圈电动机角速度的变化。在速度很低时,电动机的转动会发生一系列的跳动或步进,所以脉动转矩的存在使电动机的转速使用范围有了一个下限。脉动转矩可采用改善逆变器输出电流波形的方法来抑制。如脉宽调制法,增加定子相数,转差频率增加法等都可有效的抑制脉动转矩。

A method is proposed,which changes a CSI induction motor operated at permanent torque control system into a slip oriented control system by using a microprocessor.In order to elirninate the influence of pulsating torque,this system operates in PWM model at lower frequency; fur- thermore a control method is also provided to avoid the phase leap of the stator current when the inverter is from an operating style transfer to another.The resting results indicate that this system is satisfactory for the squirrel...

A method is proposed,which changes a CSI induction motor operated at permanent torque control system into a slip oriented control system by using a microprocessor.In order to elirninate the influence of pulsating torque,this system operates in PWM model at lower frequency; fur- thermore a control method is also provided to avoid the phase leap of the stator current when the inverter is from an operating style transfer to another.The resting results indicate that this system is satisfactory for the squirrel cage induction motors.

本文根据滑差矢量控制原理,将一恒转差控制的电流型逆变器异步电动机控制系统改进成为滑差矢量控制系统,并用一台单板机控制.为消除脉动转矩对电机运行性能的影响,系统在低频时以 PWM 方式工作.文中还给出了当逆变器由一种工作方式向另一种工作方式转换时,为保证异步电动机定子电流的相位不发生跳变的控制方法.

A formula of harmonic current amplitude for CSI PWM is derived in this paper. An objective function of pulsating torque is also derived. We proceed with off line optimized and subharmonic PWM optimized based on this objective function using IBM-PC microcomputer.The results of offline optimization are made to compare with subharmonic PWMoptimization, and the pulsating torque minimization PWM is also made to compare with efficiency optimization PWM and harmonic average torque minimization PWM.We...

A formula of harmonic current amplitude for CSI PWM is derived in this paper. An objective function of pulsating torque is also derived. We proceed with off line optimized and subharmonic PWM optimized based on this objective function using IBM-PC microcomputer.The results of offline optimization are made to compare with subharmonic PWMoptimization, and the pulsating torque minimization PWM is also made to compare with efficiency optimization PWM and harmonic average torque minimization PWM.We made use of hardware in combination with software to realize the experiment of pulsating torque minimizat ion PWM generator.It is a simple, reliable, easier realization, lower price, and better characteristic PWM generator.

本文推导出电流源逆变器(CSI)脉宽调制(PWM)谐波电流幅值表达式,脉动转矩目标函数。根据此目标函数最小在IBM—PC机上进行脱线寻优、分谐波调制寻优;将脱线寻优结果与分谐波调制PWM优化法进行比较;也将脉动转矩最小PWM与效率最优PWM、谐波平均转矩最小PWM进行比较。采用硬件和软件相结合实现了脉动转矩最小的PWM发生器实验。它是一种简单、可靠、易于实现、价格低廉、性能良好的最优PWM发生器。

 
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