Direct torque control of four-switch brushless DC Motor with non-sinusoidal back-EMF

Öztürk, Salih Barış; Alexander, William C.; Toliyat, H.A.

doi:10.1109/pesc.2008.4592717

Cited by 29 publications

(29 citation statements)

References 11 publications

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“…Equation (9) shows that the electromagnetic torque contains two parts: the permanent magnet torque and the reluctance torque produced by the salient rotor. And then, the torque derivative k Te with respect to the torque angle δ is obtained…”

Section: Is the Input Vector And Y(t)=[i Sd I Sq ]mentioning

confidence: 99%

“…The experimental conditions used in subsection 4.2 are also adopted in this part, namely the same load conditions are implemented. In viewing of that the IPMSM torque output is calculated according to (9) in the DSP, it will be unreliable when the parameters changed. Consequently, only the directly measured threephase current of the IPMSM is exhibited in Fig.…”

Section: Parameter Sensitivitymentioning

confidence: 99%

“…Compared with FOC, the DTC scheme has higher dynamic response and a simpler control structure, due to lack of the inner current loop, rotary coordinate transformation blocks and space vector modulation (SVM) block [3]. After the DTC scheme was introduced by Takahashi and Depenbrock to the induction motor drive in the 1980s [4][5], it has been extended to other types of alternating-current (AC) motor drive [6][7][8][9][10][11]. In [12] and [13], a typical DTC scheme for interior PMSM (IPMSM) drive is presented, where the voltage vector is selected from a switching table with the knowledge of the angular position of the stator flux vector and the outputs of the torque and stator flux hysteresis controllers.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Direct Stator Flux Vector Control Strategy for IPMSM using a Full-order State Observer

Yuan¹,

Zeng²,

Zhao³

2017

Journal of Electrical Engineering and Technology

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-A direct stator flux vector control scheme in discrete-time domain is proposed in this paper for the interior permanent magnet synchronous motor (IPMSM) drive to remove the proportional-integral (PI) controller from the direct torque control (DTC) scheme applied to IPMSM and to obtain faster dynamic response and lower torque ripple output. The output of speed outer loop is used as the desired torque angle instead of the desired torque in the proposed scheme. The desired stator flux vector in dq coordinate is calculated with a given amplitude. The state-space equations in discrete-time for IPMSM are established, the actual stator flux vector is estimated in deadbeat manner by a full-order state observer, and then the closed-loop control is achieved by the pole placement. The stator flux error vector is utilized to calculate the reference stator voltage vector. Extracting the angle position and amplitude from the estimated stator flux vector and estimating the output torque are eliminated for the direct feedback control of the stator flux vector. The proposed scheme is comparatively investigated with a PI-SVM DTC scheme by experiment results. Experimental results show the feasibility and advantages of the proposed control scheme.

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Section: Is the Input Vector And Y(t)=[i Sd I Sq ]mentioning

confidence: 99%

Section: Parameter Sensitivitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Direct Stator Flux Vector Control Strategy for IPMSM using a Full-order State Observer

Yuan¹,

Zeng²,

Zhao³

2017

Journal of Electrical Engineering and Technology

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show abstract

“…The convergence speed is fast when the system state is near the equilibrium point. However, when the system state is far away from the equilibrium point, the convergence speed becomes slower and the dynamic performance becomes worse [23]- [25].…”

Section: Xy X a A B B C C E E I E I E I E I Tmentioning

confidence: 99%

Position Sensorless Control of BLDC Motors Based on Global Fast Terminal Sliding Mode Observer

Wang¹,

Fu²,

Wang³

2015

Journal of Power Electronics

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The brushless DC motor (BLDCM) has many advantages. As a result, it is widely used in electric vehicle (EV) drive systems. To improve the reliability of the motor control system, a position sensorless control strategy based on a sliding mode observer (SMO) is proposed. The global fast terminal sliding mode observer (GFTSMO) is proposed to enhance the control performance of the SMO control system. The advantages of the linear sliding mode and the nonsingular terminal sliding mode (NTSM) are combined in the control strategy. The convergence speed of the system state is enhanced. The motor commutation point is obtained with the observation of the back EMF, and the instantaneous torque value of the motor is calculated. Therefore, the position sensorless control of the BLDCM is realized. Experimental results show that the proposed control strategy can improve the convergence speed, dynamic characteristics and robustness of the system.

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“…Particularly, a direct torque control approach is applied via a four-switch inverter in [13]. Another method proposed for the reduction of commutation torque ripple in BLDCM drives is to regulate DC link voltage of the inverter instead of applying PWM signals to the switches for chopping [11,14].…”

Section: Introductionmentioning

confidence: 99%

A switched current controller with commutation delay compensation for the reduction of commutation torque ripple in BLDCM drives

Türker¹,

Khudhair²

2017

Turk J Elec Eng & Comp Sci

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Abstract:The mathematical model of the equivalent circuit of a brushless DC motor switches during the operation due to commutation. This issue causes a sudden ripple in the output torque, which is called commutation torque ripple.Brushless DC motor drives suffer from commutation torque ripple, affecting the performance of the motor in practical applications. A discrete-time switched controller is proposed to reduce the commutation torque ripple in brushless DC motor drives. The proposed controller is a combination of two distinct controllers designed for two different working regions of brushless DC motors. In addition, the commutation delay is also considered in the controller and a predictive structure is implemented to reduce this effect. The overall control scheme consisted of the switched controller and the commutation delay compensation, showing the originality of this study. The performance of the proposed controller scheme is tested through various comprehensive experiments to illustrate its effectiveness and viability.

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Direct torque control of four-switch brushless DC Motor with non-sinusoidal back-EMF

Cited by 29 publications

References 11 publications

Direct Stator Flux Vector Control Strategy for IPMSM using a Full-order State Observer

Direct Stator Flux Vector Control Strategy for IPMSM using a Full-order State Observer

Position Sensorless Control of BLDC Motors Based on Global Fast Terminal Sliding Mode Observer

A switched current controller with commutation delay compensation for the reduction of commutation torque ripple in BLDCM drives

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