Torque ripple suppression control for PM motor with current control based on PTC

Nakamura, Kento; Fujimoto, Hiroshi; Fujitsuna, Masami

doi:10.1109/ipec.2010.5542101

Cited by 12 publications

(10 citation statements)

References 10 publications

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“…(6) and (7) is a constant weight that takes a positive or negative value. Equations (6) and (7) The generated torque in a PMSM is known to sometimes have a sixth component as a peak ripple component [5,6,8,12]. That is, for the integer n, there is no k = 2n harmonic component.…”

Section: Torque Generation Equation (Second Basic Equation)mentioning

confidence: 99%

See 1 more Smart Citation

New Simple Torque‐Sensorless Torque Control for Quasi‐perfect Compensation of Sixth‐Harmonic Torque Ripple Due to Nonsinusoidal Distribution of Back EMF of PMSM

Shinnaka

Kishida

2013

Electrical Engineering Japan

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This paper proposes a new torque-sensorless torque control method for permanent-magnet synchronous motors (PMSMs). The proposed method can almost perfectly compensate the sixth harmonic torque ripple that is caused by nonsinusoidal distributions of the back electromagnetic force and the rotor magnetic flux of PMSMs. The torque control system is, in principle, constructed on the basis of vector control, but has two new, dedicated speed-varying devices: a harmonic torque observer and a current controller. The speed-varying harmonic torque observer can estimate the harmonic component over a wide range of speeds, even when the generated torque is constant, and produce a suitable compensation signal. The speed-varying current controller shows stable control performance over a wide range of speeds; it can fully track the compensated current command containing the DC and sixth harmonic components. The effectiveness of the proposed method is examined and verified through extensive numerical experiments.

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Section: Torque Generation Equation (Second Basic Equation)mentioning

confidence: 99%

“…Methods of generating a compensation signal are classified in terms of whether they need a torque sensor or other sensor in order to detect the signal equivalent to the torque ripple (below referred to as "sensorless") [5][6][7] or do not need such a sensor (below referred to as "sensor-using") [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

New Simple Torque‐Sensorless Torque Control for Quasi‐perfect Compensation of Sixth‐Harmonic Torque Ripple Due to Nonsinusoidal Distribution of Back EMF of PMSM

Shinnaka

Kishida

2013

Electrical Engineering Japan

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“…The problem of suppressing the torque ripple in PMMs has been widely investigated and several approaches have been proposed (see [6] and the references therein, [7], [8], [9], [10], [11]). The principal techniques can be cast into two main groups.…”

Section: Introductionmentioning

confidence: 99%

Torque ripple suppression control for permanent magnet motors

Fedele

Ferrise

2014

2014 European Control Conference (ECC)

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Permanent magnet motors are largely employed due to their high performances in terms of efficiency, power factor and power density. However, non-uniformity into the generated torque may heavily limit their use. In this paper a novel approach is proposed to cancel torque ripple when motor parameters are unknown. The cancellation scheme is based on the frequencies estimation of periodic disturbances acting on the generated motor torque. The estimation process makes use of an adaptive frequency-locked loop system driven by speed measurements. A fractional-order controller is designed to guarantee the stability of the closed-loop system.

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“…These techniques can be classified into machine design [2]- [4] and controlbased [5]- [14] approaches. The former class includes skewing, fractional slot pitch windings, and magnet shape optimization etc.…”

Section: Introductionmentioning

confidence: 99%

“…As an alternative technique for detecting torque ripples, load torque observers have been proposed in [13]. Recently, there are high precision torque transducers which are applicable to instantaneous torque control [14].…”

Section: Introductionmentioning

confidence: 99%

Torque ripple suppression of permanent magnet synchronous motors considering total loss reduction

Nakao

Akatsu

2013

2013 IEEE Energy Conversion Congress and Exposition

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This paper presents a current optimization methodology which achieves torque ripple suppression with the total loss (i.e. copper and iron losses) reduction in permanent magnet synchronous motors (PMSMs). The optimal current command can be easily obtained from a torque equation expressed with an instantaneous current vector and is consequently non-sinusoidal. In general, the current distortion increases not only copper but also iron losses. To minimize the total loss, parameters which have a dependence of the flux linkages is taken into account in the proposed technique. As a result the optimal current command can achieve the smooth torque production with the minimum total loss under conditions in which the iron loss is nonnegligible. The effectiveness of the current optimization strategy is verified by performing some simulations and experiments in an interior type PMSM.I.

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Torque ripple suppression control for PM motor with current control based on PTC

Cited by 12 publications

References 10 publications

New Simple Torque‐Sensorless Torque Control for Quasi‐perfect Compensation of Sixth‐Harmonic Torque Ripple Due to Nonsinusoidal Distribution of Back EMF of PMSM

New Simple Torque‐Sensorless Torque Control for Quasi‐perfect Compensation of Sixth‐Harmonic Torque Ripple Due to Nonsinusoidal Distribution of Back EMF of PMSM

Torque ripple suppression control for permanent magnet motors

Torque ripple suppression of permanent magnet synchronous motors considering total loss reduction

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