Online Optimal Tracking Method for Interior Permanent Magnet Machines With Improved MTPA and MTPV in Whole Speed and Torque Ranges

Xia, Zekun; Nalakath, Shamsuddeen; Tarvirdilu-Asl, Rasul; Sun, Yingguang; Wiseman, Jason; Emadi, Ali

doi:10.1109/tpel.2020.2970111

Cited by 55 publications

(21 citation statements)

References 51 publications

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“…In the generation of the results, MTPA is adopted below the base speed, ω b , while MTPV is used above ω b . The MTPA algorithm is based on the solution of an optimization problem [22][23][24][25], which minimizes the continuous stator current, i s , that generates the reference torque, T re f , while meeting current and voltage constraints:…”

Section: Main Analytical Formulationsmentioning

confidence: 99%

“…MTPV is an effective strategy to obtain maximum torque when operating the motor in the flux weakening region, i.e., above the base speed [22][23][24][25]. The MTPV optimization problem can be formulated as:…”

Section: Main Analytical Formulationsmentioning

confidence: 99%

“…The conventional optimality criteria for MTPA and MTPV do not consider magnetic core saturation, and therefore result in deviations from the optimal trajectory, especially at higher load currents. Recent research [25] proposes mathematical formulations to account for magnetic core saturation in the MTPA and MTPV criteria, and obtains the corresponding optimal solutions.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Assessment of the Energy Consumption and Drivability Performance of an IPMSM-Driven Electric Vehicle Using Different Buried Magnet Arrangements

et al. 2021

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This study investigates the influence of the buried magnet arrangement on the efficiency and drivability performance provided by an on-board interior permanent magnet synchronous machine for a four-wheel-drive electric car with two single-speed on-board powertrains. The relevant motor characteristics, including flux-linkage, inductance, electromagnetic torque, iron loss, total loss, and efficiency, are analyzed for a set of six permanent magnet configurations suitable for the specific machine, which is controlled through maximum-torque-per-ampere and maximum-torque-per-voltage strategies. Moreover, the impact of each magnet arrangement is analyzed in connection with the energy consumption along four driving cycles, as well as the longitudinal acceleration and gradeability performance of the considered vehicle. The simulation results identify the most promising rotor solutions, and show that: (i) the appropriate selection of the rotor configuration is especially important for the driving cycles with substantial high-speed sections; (ii) the magnet arrangement has a major impact on the maximum motor torque below the base speed, and thus on the longitudinal acceleration and gradeability performance; and (iii) the configurations that excel in energy efficiency are among the worst in terms of drivability, and vice versa, i.e., at the vehicle level, the rotor arrangement selection is a trade-off between energy efficiency and longitudinal vehicle dynamics.

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Section: Main Analytical Formulationsmentioning

confidence: 99%

Section: Main Analytical Formulationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Assessment of the Energy Consumption and Drivability Performance of an IPMSM-Driven Electric Vehicle Using Different Buried Magnet Arrangements

et al. 2021

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show abstract

“…In the latter case, a constant available maximum power can not be guaranteed in the whole speed range. Above a defined speed, a new strategy must be implemented for the motor control, namely, the maximum torque per voltage (MTPV) [8,9]. It allows all the current and voltage constraints of the system to be met, at the cost of a reduction in the delivered power.…”

Section: Introductionmentioning

confidence: 99%

A Review about Flux-Weakening Operating Limits and Control Techniques for Synchronous Motor Drives

2022

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This paper deals with motor design aspects and control strategies for the flux-weakening (FW) operation of synchronous motors. The theory of FW is described by taking into account different control schemes. The advantages and drawbacks of each one are discussed, as well. Moreover, some motor design considerations for achieving an effective FW operation are illustrated for permanent magnet (PM), wound rotor (WR) and reluctance (REL) synchronous machines, using the per unit approach. The distinguishing characteristic of this review provides two-fold attention on both machine design and control strategies obtained by several collaborations with industrial and commercial companies.

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“…Owing to their advantages of high power density and high efficiency, interior permanent magnet synchronous motors (IPMSMs) are very popular in electric vehicles (EVs) [1][2][3] . To realize the objective of reducing energy losses, the maximum torque per ampere (MTPA) control strategy is widely used for the IPMSM drives.…”

Section: Introduction1mentioning

confidence: 99%

Accurate online MTPA control of IPMSM considering derivative terms

Yang¹,

Sun

Feng

et al. 2021

Chin. J. Electr. Eng.

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The conventional maximum torque per ampere (MTPA) operation usually neglects the derivative terms of interior permanent magnet synchronous motor (IPMSM) parameters, which significantly influences MTPA control accuracy. In this study, an MTPA control scheme that considers the derivative terms is developed, and a parameter identification strategy that considers the inverter to be non-ideal is developed for the calculation of the IPMSM parameters and derivative terms. In addition, the estimation accuracy of the motor parameters is further improved through the calibration of the nonlinear factors of the inverter. Finally, the effectiveness and accuracy of the proposed method is verified by simulation. This paper proposes practical methods for both inverter parameter estimation and accurate online MTPA control.

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Online Optimal Tracking Method for Interior Permanent Magnet Machines With Improved MTPA and MTPV in Whole Speed and Torque Ranges

Cited by 55 publications

References 51 publications

Assessment of the Energy Consumption and Drivability Performance of an IPMSM-Driven Electric Vehicle Using Different Buried Magnet Arrangements

Assessment of the Energy Consumption and Drivability Performance of an IPMSM-Driven Electric Vehicle Using Different Buried Magnet Arrangements

A Review about Flux-Weakening Operating Limits and Control Techniques for Synchronous Motor Drives

Accurate online MTPA control of IPMSM considering derivative terms

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