torque ripple

However, the torque ripple at the 79% pole-arc to pole-pitch ratio is not minimal although the THD of back EMF is minimal at this point.

This machine may be of interest where the cost of winding connections is important, but again high torque ripple may be detrimental.

The simulation result shows that the system consisting of the estimator boasts a fast response, small torque ripple and good robustness.

The simulation results show that the system can depress the torque ripple effectively and improve the startup response.

The research contents of this paper supply theoretical basis to the design of brushless DC motor of high performances and low torque ripple.

One of the disadvantages of conventional direct torque control is high torque ripple.

The new approach achieved inverter switches duty ratio control and made torque ripple minimum.

Step skewing of rotor magnets is an efficient manner for reducing harmonics and minimizing cogging torque and torque ripple.

Cogging torque is one of the most important parameters of PM motors, which causes torque ripple, vibration and acoustic noise.

By measuring and analyzing the frequency of the noise signal, the actions of the torque ripple on the vibration and noise were determined.

Simulation studies show that the direct torque control scheme can effectively inhibit the brushless DC motor torque ripple.

The torque ripple will degrade the performance of control system by classical direct torque control for asynchronous motor in low speed.

Then a torque and flux regulator based sliding-mode control theory was designed to reduce the torque ripple in conventional DTC system.

The torque ripple of switched reluctance motor is a crucial problem in its application.

The torque ripple arosed by the slot effect in PM motor are more significant in the low speed hub motor for electric vehicle use.

The experimental figure approve the conclusion is right Can as reference for minish Commutation torque ripple.

The studies of the paper have positive significance in reduce torque ripple of brushless DC motor .

Finally, the proposed strategy was verified by simulations. Simulation results show that a great reduction of torque ripple was achieved.

In the way of restraining the torque ripple, the torque performance of the motor is optimized.

In duty ratio control technique, a zero voltage vector was applied in each sampling period to reduce the torque ripple.

Back electromotive force current of BLDCM influences the torque ripple, efficiency and commutation control directly.

Five- and six-phase motors can offer better torque ripple reduction compared with four-phase and three-phase.

Improved the torque ripple and current distortion and non-ideal of low speed about direct torque control.

Torque ripple is an important factor affecting the performance of Brushless DC motor (BLDCM).

After the analysis of torque ripple and excessive starting current existed in the basic DTC system, the following improvements are made.

The simulation results show the validity of reducing and canceling torque ripple by using dynamic torque model.

Therefore, it is expected that model C is the optimal model for the HEV motor with high torque and low torque ripple.

It applies the direct torque control to solute the torque ripple and proves it with the simulation.

Therefore, we can verify that the THD of back EMF is not always related to the torque ripple in the IPMSM.

Then the control strategies for reducing the torque ripple is discussed.

The torque ripple reduction methods of SRM are further discussed in this paper.

Simulation results show that a great reduction of torque ripple is achieved.

From the lowest to the highest speed, speed servo motor can smooth running, torque ripple is small.

In order to minimize torque ripple, the waveform of phase back EMF should be sinusoidal at no load operation.

Because of the high precision machining, the motor needs small enough torque ripple.

To reduce the simulation generated by the SPWM high-order harmonic components and the torque ripple and so on.

It can reduce the torque ripple of SRM and also have good static and dynamic response.

A further analysis is to study the air gap flux density harmonic of In-Wheel-Motor and its torque ripple.

In order to focus on low torque ripple, we decided on the pole-arc to pole-pitch ratio as 73. 5% in the paper.

An Analysis and a Compensation Method for Commutation Torque Ripple in Trapezoidal BLDC Motor

Torque ripple minimization in direct torque control of a permanent magnet synchronous motor

Design and Research of an Adaptive Controller for Torque Ripple Minimization in Permanent Magnet Synchronous Motor

Simulation on Switched Reluctance Motor under a Fuzzy-logic-based Turn-Off Angle Compensation for Torque Ripple Reduction

Analysis of the influence of commutation time on commutation torque ripple of permanent-magnet brushless DC motor

Analysis of Commutation Torque Ripple of Brushless DC Motor and its Minimization Methods

An Integrated Control Strategy of Switched Reluctance Motor Contributing to Low Vibration Noise and Minimal Torque Ripple

Torque ripple minimization strategy for the direct torque control of brushless doubly-fed machines

Torque Ripple Intelligent Minimization of Switched Reluctance Motor

Unreasonable torque ripple of direct torque control in permanent magnet synchronous motor

Analysis of the Commutation Torque Ripple of Permanent Magnet Brushless DC Motors

Research on Torque Ripple Minimization Strategy for Direct Torque Control of Induction Motors

Analysis of Inductance, Permanent Magnet EMF and Slot Torque Ripple of Dual-Rotor Permanent Magnet Machine

Review of Torque Ripple and its Suppression in Permanent Magnet Brushless DC Motor

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

Torque Ripple Minimization in Direct Torque Control of Induction Machines

Study of Minimization of Torque Ripple in SRM Drives

A Reduced Torque Ripple Controller for Direct Torque Control of Induction Machines

Design of Torque Ripple Minimization for Switched Reluctance Motor

Research on Torque Ripple Control of Brushless DC Motor for Mini-Battery Electric Vehicle

Torque ripple minimization in direct torque control of induction motors

A Torque Ripple Minimization Scheme in Direct Torque Control of Induction Motors

Analysis and Comparison of Commutation Torque Ripple of PM Brushless DC Motor on Five PWM Modes

Torque Ripple of Permanent Magnet Brushless DC Motor and its Mi nimization Methods

Analysis and Simulation of Torque Ripple Attenuation for PM Brushless DC Motors

Research on Torque Ripple Minimum Approach of Direct Torque Control System

Torque Ripple Reduction in Single Phase Brushless DC Motors of High Magnetic Load

Torque Ripple Reduction of Direct Torque Control for Induction Motor

Research on Torque Ripple Reduction of Direct Torque Control System

Analysis of Torque Ripple in Doubly Salient Permanent Magnet Motor

An Algorithm for Controlling SRM Torque Ripple Reduction

The Method to Reduce Torque Ripple in a Sensorless Drive for the BLDC Motor

A Novel Method for Torque Ripple Minimization of the Sensorless Brushless DC Motor

Torque Ripple Compensating Technique of Permanent Magnet Synchronous Motor Based on Kalman Filter

Review on the Methods of Torque Ripple Attenuation of Brushless DC Motor

A Novel Method to Eliminate the Conduction Torque Ripple in BLDCM Using Cascade Topology Structure

Analysis and Attenuation of Torque Ripple of Brushless DC Motor

Commutation torque ripple restraint in BLDC motor

Torque Ripple Minimization in Permanent Magnet Synchronous Motors Based on Neural Networks

Torque Ripple Minimization of Switched Reluctance Motor Based on Adaptive Fuzzy-Neural Networks

Torque-ripple minimization of switched reluctance motor based on commutation control

Research on the Low Torque Ripple of Direct Torque Control System

commutation torque ripple;

Torque Ripple Reduction of PM Brushless DC Motors Based on Auto-disturbances-rejection Controller

The Torque Ripple Minimization of Brushless DC Motor

Torque-Ripple Minimization in Switched Reluctance Motor Based on Sinusoidal Model

A New Method of Torque Ripple Reducing for Switched Reluctance Motor

Fuzzy Control Method of Commutation Torque Ripple Minimization for BLDCM

A Novel Design and Control Method of BLDC Motor with Small Torque Ripple

The Research of Torque Ripple of Rare-earth PM Brushless DC Motor

Torque-Ripple Minimization in Switched Reluctance Motor Based on BP Neural Network

Research of Torque Ripple Reduction in Brushless DC Motor Based on Bus Current Controlling

A Research into Minimizing Torque Ripple of SRM

SVPWM Control for Torque Ripple Attenuation of PM Brushless DC Motors

A Novel Control Scheme to Suppress the Commutation Torque ripple in BLDCM

A Method to Compensate Torque Ripple Which is Directly Faced Torque Ripple

Measurement of SRM torque ripple

Influence on Torque Ripple of DSPM by Permanent-magnet and Airgap

Analysis of Permanet-Magnet AC Servo Motor Torque Ripple

Torque Ripple Reduction in SRM Based on Torque Observe