This paper describes a novel approach to field oriented control of BLDC (Brushless Direct-Current) motor producing significantly reduced torque ripple. presents standard mathematical model in the abc reference frame which is suitable for simulation six-step strategy, and dq modified strategies. An extended transformation, other words Park's-like described implemented model. Simulation results all strategies are evaluated compared.

Exceptional robust configuration and fault tolerance capabilities make switched reluctance motors (SRMs) a promising technology for automotive applications. Nevertheless, the power transistors in converter of an SRM drive are well-considered more vulnerable, compared with itself. Therefore, accurate early stage detection is crucial such safety-critical This article investigates usage high-frequency (HF) signal injection real-time identification localization drives. Unlike existing diagnostic...

Switched reluctance motors (SRMs) are considered a competitive technology for more electric aircraft and automotive applications due to their excellent fault-tolerant capabilities robust configuration. In such applications, system reliability is crucial feature. Therefore, here, new control strategy with real-time fault diagnosis power transistor faults in SRM drives proposed. The developed topology composed of four additional switches relay network based on the conventional asymmetric...

This article presents an effective algorithm to reduce acoustic noise, vibrations and torque ripple caused by cogging in three-phase Permanent Magnet (PM) motors under Field Oriented Control (FOC) operation. Cogging profile is suitably included into q-axis current reference, which must be then precisely tracked order mitigate vibrations, speed torque. Conventional FOC structure has been extended a Current Harmonics Controller (CHC) achieve precise control of dq harmonics for all operation...

The paper presents comparison of two control techniques (a) sliding mode and (b) forced dynamics for electric drives employing permanent magnet synchronous motors with flexible coupling. designed controllers are the cascade structure, comprising an inner speed loop outer position loop. both is based on respects principles vector control. loops to load mass angle in presence a vibration external torque. Derived laws requires estimates torque second one also its derivatives, which estimated...

Purpose The purpose of this paper is to discuss the design and verification a new control algorithm for drive with permanent magnet synchronous motor (PMSM) flexible coupling based on “Forced dynamics control”. Control laws are derived tested rotor load angle achieve non‐oscillatory position step response specified settling time. Design/methodology/approach control” technique feedback linearization which forces or follow demanded prescribed closed‐loop dynamics. proposed structure developed...

Forced dynamics control principles are exploited to develop algorithms for electric drive with PMSM and flexible couplings. The controller is of the cascade structure, comprising an inner speed loop, which respects vector requires a load torque estimate outer position designed rotor or angle in presence vibrations due coupling including external torques. Computation stator voltage based on novel algorithm exploiting forced control. Derived laws require estimates its derivatives estimated set...

The control system for position of the drive employing PMSM based on principles sliding mode and respecting vector is presented. Designed controller chattering free complies with demanded precision. Described technique divides into two channels, which enable to motor flux torque separately. parallel structure, comprising a loop machine magnetic rotor angle. To achieve precision eliminate smoothing integrator introduced both controllers furthermore signnm function replaced by proportional...

Accurate fault diagnosis, with immediate identification and isolation, is of paramount importance for power converters switched reluctance motor drives, as it allows early adoption tolerant procedures that eliminate the adverse effects faults on machine operation. This paper presents an online diagnostic algorithm converter in SRM drives based high frequency voltage signal injection. Unlike other methods use additional sensors, this extracts signatures from fundamental current by injecting a...

In this work two different methods for the identification of cogging torque in three-phase Permanent Magnet (PM) motors are presented. The map carried out from these is then used a Field Oriented Control (FOC) algorithm to mitigate ripple speed and torque. first method uses high bandwidth position control loop FOC structure, which slow accurate positioning rotor implemented extracted q-axis current. Second Load Torque Observer (LTO), able observe various disturbances like load, friction but...

Nowadays, there are several application in the field of position controlled electric drives, such as high speed cutting, where traditional cascade control structures provide insufficient accuracy. Therefore, it is necessary either to completely change structure (e.g. sliding mode control) or modify and extend basic structure. One those modifications can be feedforward direct branches. Feedforward increase order astatism without stability influencing but on other hand brings problems...

The paper deals with brushless DC motors (BLDC) operated in high speed region without any or position sensor. A six-step commutation technique is used to control the BLDC motor, utilizing disconnected motor phase for sensing induced voltage. main goal of describe limitation conventional 6-step sensorless mode at speeds and introduce a novel approach that extends regions. Theoretical assumptions will be verified experimentally on real high-speed motor.

An integral part of every control design is synthesis and analysis controlled loop. Major elements each loop are system, wide variety controllers, filters, or gains, which easy to be identified. Minor elements, very often neglected, offsets, delays lags in signal processing, calculation, actuating so on. This paper deals with an application use-case where timing play a significant role have impact the motor performance. A compensation method was proposed suppress calculation delay caused by...

A novel control algorithm devoted to remove undesired low-order current harmonics in AC motor drives is presented this article. The proposed combines a suitable multiple reference frame synchronous harmonic estimator and vector implementation suppress the contained stator currents. This technique can handle positive-, negative-, zero-sequence sets, keeping satisfying dynamic behavior. has been evaluated by numerical simulations experimentally tested on permanent magnet drive.

The paper describes the electrical parameters investigation of a surface Permanent Magnets Synchronous Motor (PMSM). Several methods have been using for resistance and inductance measurement. Unfortunately, standard techniques do not always allow estimation inductances saturation curves therefore new approaches are shown in paper. acquired compared evaluated, most accurate will be processed used further microcomputer implementation.

This paper deals with the implementation of zero sequence voltage (ZSV) technique [4,7], which was exploited to determine rotor position surface permanent magnet synchronous motor (SMPMSM). The method is based on measurement, performed between neutral point AC machines and mid-point inverter DC bus. air gap flux consequently were obtained by adopting a estimator suitable filtering algorithm.

This paper presents novel modification of Field Oriented Control (FOC) in order to reduce torque ripple 3-phase Permanent Magnet (PM) motors caused by non-sinusoidal BackEMF. A smooth operation is ensured precise tracking a modified q-axis current reference, which includes BackEMF shape. Alternating component added into reference has 6 times higher frequency than fundamental stator electrical frequency. Therefore such usually not feasible with conventional PI controller due its limited...

The paper analyzes torque ripple and its reduction in Permanent Magnet Synchronous Motor (PMSM) controlled by Field Oriented Control (FOC) using advanced simulation. Created 2D Finite Element Method (FEM) model of real PMSM is simulation coupled with FOC to investigate impact cogging non-sinusoidal Back-EMF on mechanical speed. technique which produces that counteracts applied. This achieved proper modification q-axis current, so current reference contains information about profile shape...

This paper presents a method for torque ripple, acoustic noise and vibrations reduction in three-phase permanent magnet (PM) motors. Field oriented control (FOC) has been extended by compensation voltage q-axis to minimize the ripple angular velocity. Amplitude phase of injected harmonic are adjusted online least mean squares (LMS) learning rule, based on Proposed significantly reduces impact cogging non-sinusoidal Back-EMF produced vibrations. Effectiveness proposed algorithm is...

The paper deals with control of Permanent Magnet Synchronous Motor (PMSM) without a rotor position sensor. In the low and zero speed region, saliencies are utilized to obtain information about position. Self-sensing techniques employ high frequency (hf) signal injection excite saliencies. proposed algorithm enables tracking saliency allows PMSM at speed. theoretical assumptions were experimentally verified including initial detection.

Flexible couplings together with resonance phenomenon are present mainly in the field of servodrives where high accuracy and dynamic requirements crucial. When dynamics doesn't correlate mechanical system design, unwanted frequencies exited. Sometimes we haven't conditions (whether material or space) to design resonant too be In that case must choose compensating methods which can eliminate these phenomenons. This paper is dedicated them.

Resolver sensor is utilized as absolute position transducer in many industrial motion-control applications where robustness and ability to operate harsh environment required. In real system, the quality of speed measurement badly affected by resolver errors. this paper, software-based error-compensation technique integrated into control structure drive. Compensation scheme adapts online errors signals order improve accuracy measured speed. Performance compensation effect on drive operation...