A robust field-weakening control strategy for IPMSM drives

Liaw, Jenn-Horng; Liao, Yi‐Hung; Tung, Che-Wei; Sue, Shinn-Ming; Huang, Yishuo

doi:10.1109/ipec.2010.5543323

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…Hence, vector control based on well-known electrical parameters and good current controllers is no longer working well to provide accurate torque control for electric vehicle (EV) and hybrid EV (HEV) applications. To reduce back EMF, the commonly field-weakening control is to let the rotor flux reference be inversely proportional to rotor speed by reducing the d-axis current [1][2][3][4]. On the other hand, the over-modulation technology can provide more line voltage to increase generated torque in the high-speed region [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Torque control in constant power region for IPMSM under six‐step voltage operation

Huang

Chen

et al. 2018

IET Electric Power Applications

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To increase output torque in the constant power region of interior permanent magnet synchronous motor (IPMSM) for electric vehicle/hybrid electric vehicle applications, a novel torque control based on voltage phase angle control is proposed to provide more accurate torque for the IPMSM. First, the mathematic model of the IPMSM under six-step voltage operation is derived. Then, the phasor diagram based on the fundamental frequency and ideal condition is used to explain the relation between the torque, power, and voltage phase angle. Moreover, Maxwell 2D simulation for the IPMSM shows the detailed phenomena including generated torque, phase current, and magnetic flux distribution for developing controllers. Hence, the proposed method uses phase voltage advancing angle to yield torque, which consists of a command feed-forward controller to give a fast dynamic response, a proportional-integral regulator, a high-resolution voltage angle injection to reduce torque ripple and an efficiency-based torque estimator to enhance torque accuracy under six-step voltage operation. Finally, a digital signal processor(DSP)-based motor drive is built to verify the proposed method using a 6 kW/47 Nm/1200 rpm IPMSM. The experimental results measured by a torque transducer are derived to show that the torque ripple is significantly reduced, torque accuracy is improved, and constant power control achieved is from 1800 to 3600 rpm. These results, therefore, confirm the superior performance of the proposed control method.

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Section: Introductionmentioning

confidence: 99%

Torque control in constant power region for IPMSM under six‐step voltage operation

Huang

Chen

et al. 2018

IET Electric Power Applications

View full text Add to dashboard Cite

show abstract

“…These studies were also based on a single method that included intensive analytical procedures, as in the previous research. In addition to studies that focused only on one method [25][26][27][28], there exist several studies [1,5,12,[29][30][31][32] that use the FW and MTPA strategies jointly. In these studies, the increase in performance using a combination of the two methods is apparent.…”

Section: Introductionmentioning

confidence: 99%

“…In these studies, the increase in performance using a combination of the two methods is apparent. The methods presented in [1,12,[29][30][31][32] yield good results but require intensive and complex analytical procedures. To reduce this complexity, the authors of [5] used look-up tables in order to keep procedures as simple as possible.…”

Section: Introductionmentioning

confidence: 99%

Neural network approach on loss minimization control of a PMSM with core resistance estimation

Erdoğan¹,

Özdemir²

2017

Turk J Elec Eng & Comp Sci

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Abstract:Permanent magnet synchronous motors (PMSMs) are often used in industry for high-performance applications.Their key features are high power density, linear torque control capability, high efficiency, and fast dynamic response.Today, PMSMs are prevalent especially for their use in hybrid electric vehicles. Since operating the motor at high efficiency values is critically important for electric vehicles, as for all other applications, minimum loss control appears to be an inevitable requirement in PMSMs. In this study, a neural network-based intelligent minimum loss control technique is applied to a PMSM. It is shown by means of the results obtained that the total machine losses can be controlled in a way that keeps them at a minimum level. It is worth noting here that this improvement is achieved compared to the case with I d set to zero, where no minimum loss control technique is used. Within this context, hysteresis and eddy current losses are primarily obtained under certain conditions by means of a PMSM finite element model, initially developed by CEDRAT as an educational demo. A comprehensive loss model with a dynamic core resistor estimator is developed using this information. A neural network controller is then applied to this model and comparisons are made with analytical methods such as field weakening and maximum torque per ampere control techniques. Finally, the obtained results are discussed.

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Modeling and analysis of IPM synchronous motor under six step voltage control by fourier series

Huang

Chen

2015

IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society

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A robust field-weakening control strategy for IPMSM drives

Cited by 3 publications

References 4 publications

Torque control in constant power region for IPMSM under six‐step voltage operation

Torque control in constant power region for IPMSM under six‐step voltage operation

Neural network approach on loss minimization control of a PMSM with core resistance estimation

Modeling and analysis of IPM synchronous motor under six step voltage control by fourier series

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