Direct torque control of permanent magnet drives

French, C.D.; Acarnley, P.P.

doi:10.1109/ias.1995.530302

Cited by 111 publications

(11 citation statements)

References 11 publications

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“…Therefore, the new dq x axes are orthogonal and have a variable length and angle as a function of electrical rotor angle (u r ). The relation between only dq and dq x axes is shown by (11).…”

Section: General Vectorial Modelmentioning

confidence: 99%

Electromagnetic torque ripple and copper losses reduction in permanent magnet synchronous machines

Monteiro

Oliveira

Aguiar

et al. 2011

Int Trans Elec Energy Syst

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SUMMARY This paper presents a method for electromagnetic torque ripple and copper losses reduction in (non‐sinusoidal or trapezoidal) surface‐mount permanent magnet synchronous machines (SM‐PMSM). The method is based on an extension of classical dq transformation that makes it possible to write a vectorial model for this kind of machine (with a non‐sinusoidal back‐EMF waveform). This model is obtained by the application of that transformation in the classical machine per‐phase model. That transformation can be applied to machines that have any type of back‐EMF waveform, and not only trapezoidal or square‐wave back‐EMF waveforms. Implementation results are shown for an electrical converter, using the proposed vectorial model, feeding a non‐sinusoidal synchronous machine (brushless DC motor). They show that the use of this vectorial mode is a way to achieve improvements in the performance of this kind of machine, considering the electromagnetic torque ripple and copper losses, if compared to a drive system that employs a classical six‐step mode as a converter. Copyright © 2011 John Wiley & Sons, Ltd.

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Section: General Vectorial Modelmentioning

confidence: 99%

Electromagnetic torque ripple and copper losses reduction in permanent magnet synchronous machines

Monteiro

Oliveira

Aguiar

et al. 2011

Int Trans Elec Energy Syst

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“…Control techniques for tracking the current trajectory based on vector/field-oriented control (FOC) or direct torque control (DTC) are most commonly used for PMSMs [5,6].…”

Section: Introductionmentioning

confidence: 99%

Constrained field-oriented control of permanent magnet synchronous machine with field-weakening utilizing a reference governor

et al. 2017

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This paper presents a complete solution for constrained control of a permanent magnet synchronous machine. It utilizes field-oriented control with proportional-integral current controllers tuned to obtain a fast transient response and zero steady-state error. To ensure constraint satisfaction in the steady state, a novel field-weakening algorithm which is robust to flux linkage uncertainty is introduced. Field weakening problem is formulated as an optimization problem which is solved online using projected fast gradient method. To ensure constraint satisfaction during current transients, an additional device called current reference governor is added to the existing control loops. The constraint satisfaction is achieved by altering the reference signal. The reference governor is formulated as a simple optimization problem whose objective is to minimize the difference between the true reference and a modified one. The proposed method is implemented on Texas instruments F28343 200 MHz microcontroller and experimentally verified on a surface mounted permanent magnet synchronous machine. ARTICLE HISTORY

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“…There have been various approaches such as standard pulsewidth modulation (PWM) based current feedback control methods, direct torque control (DTC) [1], and model predictive control (MPC) [2]. Especially, the MPC-based approach has been receiving much attention since it yields an optimal strategy.…”

Section: Introductionmentioning

confidence: 99%

Refinement of inverter model considering dead‐time for performance improvement in predictive instantaneous current control

Imura

Takahashi

Fujitsuna

et al. 2013

IEEJ Transactions Elec Engng

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Model predictive instantaneous-current control (MPIC), which was proposed in our earlier works, enables us to achieve better instantaneous current control using mathematical models of an inverter and permanent magnet synchronous motors (PMSMs). However, dead-time to avoid short breakdown in the inverter is not usually considered in a general inverter model. Such an unmodeled part in the inverter model prevents accurate prediction of current evolution in motor systems based on the model predictive control. Therefore, in this paper, we analyze current response resulting from the dead-time in the MPIC, and propose a refined inverter model considering the dead-time so that control performance is improved. The effectiveness of the proposed method is verified through simulation and experiments.

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Direct torque control of permanent magnet drives

Cited by 111 publications

References 11 publications

Electromagnetic torque ripple and copper losses reduction in permanent magnet synchronous machines

Electromagnetic torque ripple and copper losses reduction in permanent magnet synchronous machines

Constrained field-oriented control of permanent magnet synchronous machine with field-weakening utilizing a reference governor

Refinement of inverter model considering dead‐time for performance improvement in predictive instantaneous current control

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