A Novel Direct Torque Controlled Interior Permanent Magnet Synchronous Machine Drive With Low Ripple in Flux and Torque and Fixed Switching Frequency

This paper proposes a novel control scheme for wide-speed-range operation of synchronous reluctance motors. The proposed scheme is a combination of maximum torque per ampere control, maximum torque per flux control, fluxweakening control, and torque limiting. These controls are based on a mathematical model in a rotating reference frame that is synchronized with the stator flux-linkage vector. The proposed control scheme is suitable for direct torque control or flux-oriented control. The validity of the control scheme is verified by the experimental results. Influences of parameter variation on the proposed control scheme are discussed. The proposed schemes of flux weakening and torque limiting are insensitive to parameter variation.

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“…A DTC method using the PI controller for torque control (15) is applied in this study. The SynRM drive system based on (6) and (14)).…”

Section: Proposed Control Scheme Of Torque and Fluxmentioning

confidence: 99%

Control Scheme for Wide-Speed-Range Operation of Synchronous Reluctance Motor in M-T Frame Synchronized with Stator Flux Linkage

2013

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“…Then, the control system design mainly focuses on the algorithms to get the desired stator voltage vector, and various algorithms are proposed by the researchers. A proportional-integral (PI) controller is employed in [6,25], and a variable structure controller is adopted in [26], to calculate the desired voltage vector. Both schemes need plenty of calculation and regulation to achieve a good control performance.…”

Section: Introductionmentioning

confidence: 99%

“…Referring to the analysis above, few DTC schemes possessing low torque ripple output can be directly applied to the IPMSM without increasing the complexity of the algorithms besides the PI-SVM DTC scheme [6,25]. However, the PI controller in the PI-SVM DTC scheme degrades the dynamic response of the system.…”

Section: Introductionmentioning

confidence: 99%

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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“…There are some disadvantages like torque ripple, current distortion and mainly needing the high sampling frequency for digital implementation that are due to the hysteresis based scheme and therefore due to the variable switching frequency. Many studies have been done to solve these problems [4,5].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study Between Direct Torque Control and Predictive Torque Control for Axial Flux Permanent Magnet Synchronous Machines

Siami¹,

Gholamian²,

Yousefi³

2013

Journal of Electrical Engineering

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This paper presents a comparative study between direct torque control (DTC) and predictive torque control (PTC) of Axial Flux Permanent magnet Machines (AFPM). In conventional DTC method for permanent magnet machines, only six actives voltage vectors of inverter are used to control torque and flux of machine. But in predictive torque control, in addition to six active voltage vectors, zero voltage vectors are used to control machine. So number of voltage vectors to control AFPM increases that leads to lower ripple of torque and flux. In predictive torque control, the response of torque and flux are computed for all possible switching states of inverter at every sample time according to discrete time model of machine, and then the switching state that optimizes ripple of torque and flux, will be applied in next discrete-time interval. Simulation results which compare the results of implementation of both methods and confirm the good performance of the proposed predictive torque control are presented.

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A Novel Direct Torque Controlled Interior Permanent Magnet Synchronous Machine Drive With Low Ripple in Flux and Torque and Fixed Switching Frequency

Cited by 324 publications

References 15 publications

Control Scheme for Wide-Speed-Range Operation of Synchronous Reluctance Motor in M-T Frame Synchronized with Stator Flux Linkage

Control Scheme for Wide-Speed-Range Operation of Synchronous Reluctance Motor in M-T Frame Synchronized with Stator Flux Linkage

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

A Comparative Study Between Direct Torque Control and Predictive Torque Control for Axial Flux Permanent Magnet Synchronous Machines

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