An Improved UDE-Based Flux-Weakening Control Strategy for IPMSM

Li, Tao; Li, Xinmin; Zhang, Guozheng; Wang, Zhiqiang

doi:10.3390/en12214077

Cited by 9 publications

(6 citation statements)

References 22 publications

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“…FOC can achieve smooth starting, low torque ripple and wide speed range, suitable for high dynamic response of machinery under tough working conditions. A vector control strategy is proposed based on the motor speed-torque-current diagram [28]. The power demand and the energy consumption were effectively reduced, and the vehicle driving range was extended.…”

Section: Focmentioning

confidence: 99%

Review and Development of Electric Motor Systems and Electric Powertrains for New Energy Vehicles

et al. 2021

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This paper presents a review on the recent research and technical progress of electric motor systems and electric powertrains for new energy vehicles. Through the analysis and comparison of direct current motor, induction motor, and synchronous motor, it is found that permanent magnet synchronous motor has better overall performance; by comparison with converters with Si-based IGBTs, it is found converters with SiC MOSFETs show significantly higher efficiency and increase driving mileage per charge. In addition, the pros and cons of different control strategies and algorithms are demonstrated. Next, by comparing series, parallel, and power split hybrid powertrains, the series–parallel compound hybrid powertrains are found to provide better fuel economy. Different electric powertrains, hybrid powertrains, and range-extended electric systems are also detailed, and their advantages and disadvantages are described. Finally, the technology roadmap over the next 15 years is proposed regarding traction motor, power electronic converter and electric powertrain as well as the key materials and components at each time frame.

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Section: Focmentioning

confidence: 99%

Review and Development of Electric Motor Systems and Electric Powertrains for New Energy Vehicles

et al. 2021

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“…Generally, in the vehicle electric drive system, the motor control strategy is a combination of maximum torque per ampere (MTPA) and flux weakening control. When the motor operates below the base speed, the MTPA control strategy is adopted, and the motor is switched to flux weakening control strategy when the speed is higher than the base speed [24].…”

Section: F Efficiency Characteristicsmentioning

confidence: 99%

Comparative Study on Variable Flux Memory Machines With Different Arrangements of Permanent Magnets

Xie

Ning

2020

IEEE Access

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Compared with conventional permanent magnet synchronous motor, variable flux memory motor (VFMM) possesses the advantage of adjusting the magnetization state online. Because of its wide speed range and large high-efficiency region, it becomes a competitive candidate for the electric drive system. This paper presents a novel parallel hybrid magnets VFMM which is obtained by updating a conventional series hybrid permanent magnets VFMM. The proposed motor adopts a new permanent magnet arrangement and the combination of low coercive force permanent magnet and high coercive force permanent magnet is used. The proposed parallel hybrid permanent magnets VFMM and the series hybrid permanent magnets VFMM are compared. The equivalent magnetic circuit models of the motors are used to explain the principle of the motors. The finite element analysis method is used to study the fundamental properties, such as open circuit radial flux density, unintentional demagnetization with q-axis current, intentional demagnetization with d-axis current, torque capability, and efficiency characteristics. It was shown the efficiency of the parallel hybrid permanent magnets VFMM is higher in the high-speed region and the magnetization state adjustment range of the parallel hybrid permanent magnets VFMM is larger. INDEX TERMS Equivalent magnetic circuit, hybrid permanent magnet, magnetization state, variable flux memory motor.

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“…2D-LUT with 2D-interpolation is applied not only for traction motor drives of Hybrid Electric Vehicle(HEV) [2] and Electric Vehicle(EV) [3], actuator driver for automotive systems [4], but also for many other PMSM-based applications [5,6]. Additionally, there exist other table-based methods besides the aforementioned current command method, such as the voltage-vector table [7], current angle table [8], 3D-LUT-based control method [9]. However, those other table-based methods are not as popular as the two-dimensional current-command-based table as a result of the simple concept and easy implementation of the two-dimensional current table.…”

Section: Introductionmentioning

confidence: 99%

Compensation of Interpolation Error for Look-Up Table-Based PMSM Control Method in Maximum Power Control

Kim¹,

Lee

2021

Energies

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This paper proposes a compensation method for interpolation error of the maximum power control of a PMSM control system that generates current commands through a look-up table. A torque control system using a look-up table created through experiments has superior characteristics, such as control stability and torque accuracy, compared to a system that executes torque control via a linear controller based on modeling. However, it is impossible to generate information on all the currents for the output torque in the table. Therefore, because the data stored in the look-up table have a discrete characteristic, they are linearly interpolated to generate a current command for the torque command. However, the PMSM current trajectory is generally elliptical, which causes an error owing to linear interpolation, reducing the maximum output power. In particular, when the table data are insufficient, such as in the high-speed operation range, the reduced maximum output cannot be ignored. This paper proposes a compensation method for the interpolation error using two feedforward compensators and a PI controller, which was verified through experiments.

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An Improved UDE-Based Flux-Weakening Control Strategy for IPMSM

Cited by 9 publications

References 22 publications

Review and Development of Electric Motor Systems and Electric Powertrains for New Energy Vehicles

Review and Development of Electric Motor Systems and Electric Powertrains for New Energy Vehicles

Comparative Study on Variable Flux Memory Machines With Different Arrangements of Permanent Magnets

Compensation of Interpolation Error for Look-Up Table-Based PMSM Control Method in Maximum Power Control

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