Torque-Ripple Minimization and Fast Dynamic Scheme for Torque Predictive Control of Permanent-Magnet Synchronous Motors

Cho, Youngkyu; Lee, Kyo‐Beum; Song, Joong-Ho; Lee, Youngil

doi:10.1109/tpel.2014.2326192

Cited by 166 publications

(73 citation statements)

References 22 publications

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“…In the FW region, vd and vq are cross-coupled together by the limitation of the DC-link output voltage shown in (24). The mathematical model of PMSMs is changing to a single-input and multiple-output (SIMO) system in the FW region.…”

Section: Ctmpc Of Pmsms Based On Voltage Angle Control In the Flux-wementioning

confidence: 99%

“…PTC was proposed recently as an effective control scheme in the application of high performance torque control of motor drives. The vector selection of PTC is more effective than conventional direct torque control (DTC), which uses a switching table [23,24]. The cost function of PTC usually consists of torque and flux magnitude errors, which are different in unit and magnitude, where a proper weighting factor is required to achieve satisfactory performance [25].…”

Section: Introductionmentioning

confidence: 99%

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An Improved Continuous-Time Model Predictive Control of Permanent Magnetic Synchronous Motors for a Wide-Speed Range

Zhang

Dong

2017

Energies

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This paper proposes an improved continuous-time model predictive control (CTMPC) of permanent magnetic synchronous motors (PMSMs) for a wide-speed range, including the constant torque region and the flux-weakening (FW) region. In the constant torque region, the mathematic models of PMSMs in dq-axes are decoupled without the limitation of DC-link voltage. However, in the FW region, the mathematic models of PMSMs in dq-axes are cross-coupled together with the limitation of DC-link voltage. A nonlinear PMSMs mathematic model in the FW region is presented based on the voltage angle. The solving of the nonlinear mathematic model of PMSMs in FW region will lead to heavy computation load for digital signal processing (DSP). To overcome such a problem, a linearization method of the voltage angle is also proposed to reduce the computation load. The selection of transiting points between the constant torque region and FW regions is researched to improve the performance of the driven system. Compared with the proportional integral (PI) controller, the proposed CTMPC has obvious advantages in dealing with systems' nonlinear constraints and improving system performance by restraining overshoot current under step torque changing. Both simulation and experimental results confirm the effectiveness of the proposed method in achieving good steady-state performance and smooth switching between the constant torque and FW regions.

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Section: Ctmpc Of Pmsms Based On Voltage Angle Control In the Flux-wementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Improved Continuous-Time Model Predictive Control of Permanent Magnetic Synchronous Motors for a Wide-Speed Range

Zhang

Dong

2017

Energies

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“…Based on the arrangement of the permanent magnet, a PMSM is fundamentally divided into an interior permanent magnet synchronous motor (IPMSM) and a surface-mounted permanent magnet synchronous motor (SPMSM). Because the magnet is mounted inside the rotor, an IPMSM is durable during high-speed operation compared with a SPMSM [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Simple Sensorless Control of Interior Permanent Magnet Synchronous Motor Using PLL Based on Extended EMF

Han¹,

Cho²,

Lee³

2017

Journal of Electrical Engineering and Technology

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-This paper proposes an improved sensorless control to estimate the rotor position of an interior permanent magnet synchronous motor. A phase-locked loop (PLL) is used to obtain the phase angle of the grid. The rotor position can be estimated using a PLL based on extended electromotive force (EEMF) because the EEMF contains information about the rotor position. The proposed method can reduce the burden of calculation. Therefore, the control period is decreased. The simulation and experimental results confirm the effectiveness and performance of the proposed method.

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“…Recently, many papers are dealing with the torque ripple reduction methods [7][8][9][10][11]. A torque ripple reduction method that aims to make the instantaneous torque equal with the reference value at the end of the cycle is researched.…”

Section: Introductionmentioning

confidence: 99%

Torque Ripple Reduction in Direct Torque Control of Five-Phase Induction Motor Using Fuzzy Controller with Optimized Voltage Vector Selection Strategy

Shin¹,

Kang²,

Lee³

2017

Journal of Electrical Engineering and Technology

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-This paper presents a torque ripple reduction method of direct torque control (DTC) using fuzzy controller with optimal selection strategy of voltage vectors in a five-phase induction motor. The conventional DTC method has some drawbacks. First, switching frequency changes according to the hysteresis bands and motor's speed. Second, the torque ripple is rapidly increased in long control period. In order to solve these problems, some/most papers have proposed torque ripple reduction methods by using the optimal duty ratio of the non-zero voltage vector. However, these methods are complicated in accordance with the parameter. If this drawback is eliminated, the torque ripple can be reduced compared with conventional method. In addition, the DTC can be simply controlled without the use of the parameter. Therefore, the proposed algorithm is changing the voltage vector insertion time by using the designed fuzzy controller. Also, the optimized voltage vector selection method is used in accordance with the torque error. Simulation and experimental results show effectiveness of the proposed control algorithm.

show abstract

Torque-Ripple Minimization and Fast Dynamic Scheme for Torque Predictive Control of Permanent-Magnet Synchronous Motors

Cited by 166 publications

References 22 publications

An Improved Continuous-Time Model Predictive Control of Permanent Magnetic Synchronous Motors for a Wide-Speed Range

An Improved Continuous-Time Model Predictive Control of Permanent Magnetic Synchronous Motors for a Wide-Speed Range

Simple Sensorless Control of Interior Permanent Magnet Synchronous Motor Using PLL Based on Extended EMF

Torque Ripple Reduction in Direct Torque Control of Five-Phase Induction Motor Using Fuzzy Controller with Optimized Voltage Vector Selection Strategy

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