Analytical Prediction of the Incremental Inductance of the Permanent Magnet Synchronous Motors

Wang, Shyh-Jier; Lin, Shir‐Kuan

doi:10.1109/tmag.2004.830629

Cited by 16 publications

(13 citation statements)

References 6 publications

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“…Thus, under the condition of maintaining constant ψ f , increasing L d is more effective. There are a variety of ways to increase the machine inductance [25][26][27], such as reducing the air-gap length or the PM thickness to increase the permeance. However, since permeability of NdFeB is quite close to air, the machine inductance will lack the sensitivity to variation of the air-gap length or the PM thickness.…”

Section: Optimization Of the Constant Power Speed Rangementioning

confidence: 99%

Design and Optimization of Permanent Magnet Brushless Machines for Electric Vehicle Applications

Zhu

et al. 2015

Energies

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In this paper, by considering and establishing the relationship between the maximum operating speed and d-axis inductance, a new design and optimization method is proposed. Thus, a more extended constant power speed range, as well as reduced losses and increased efficiency, especially in the high-speed region, can be obtained, which is essential for electric vehicles (EVs). In the first step, the initial permanent magnet (PM) brushless machine is designed based on the consideration of the maximum speed and performance specifications in the entire operation region. Then, on the basis of increasing d-axis inductance, and meanwhile maintaining constant permanent magnet flux linkage, the PM brushless machine is optimized. The corresponding performance of the initial and optimal PM brushless machines are analyzed and compared by the finite-element method (FEM). Several tests are carried out in an EV simulation model based on the urban dynamometer driving schedule (UDDS) for evaluation. Both theoretical analysis and simulation results verify the validity of the proposed design and optimization method.

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Section: Optimization Of the Constant Power Speed Rangementioning

confidence: 99%

Design and Optimization of Permanent Magnet Brushless Machines for Electric Vehicle Applications

Zhu

et al. 2015

Energies

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“…As shown in Figure 1, in this paper, all three phases are excited by different winding currents, as opposed to the approach used in [21]. It is known that eq L is the sum of the air-gap ( g L ) and the slot inductances ( slot L ).…”

Section: Methodsmentioning

confidence: 99%

A Novel Sensorless Initial Rotor Position Estimation Method for Permanent Magnet Synchronous Motors

Wu¹,

Lin²

2017

IJPEDS

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This paper presents a high efficiency initial rotor position estimation method for Permanent Magnet Synchronous Motors (PMSM). The approach uses the viable inductance model to analyze the optimal motor injection sine wave frequency as the motor's test signal. Unlike other high-frequency injection methods, this approach does not require trial and error experiments. The injection frequency is identified by programmable simulations using Matlab. Experimental evaluation of 3-phase PMSM showed that this injection frequency optimization method works successfully. The proposed method can find the optimal injection frequency without experimentation, and outperforms other test signals in terms of accuracy, vibration quantity and noise. This microprocessor-developed 3-phase PMSM control driver can be applied to electrical appliances, machine tools and automation.

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“…However, little attention has been paid to the development of an analytical method for the computation of the incremental inductance in a permanent magnet synchronous machine. In [8]- [9], two-dimensional analytical methods have been presented to calculate the winding inductance of a PMSM. In [8], the proposed 2-D analytical method is simple but ignores the reluctance of the rotor back iron and stator iron.…”

Section: Introductionmentioning

confidence: 99%

High frequency injection-based stator flux linkage and torque estimation for DB-DTFC implementation on IPMSMs considering cross-saturation effects

Lorenz

2013

2013 IEEE Energy Conversion Congress and Exposition

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Deadbeat-direct torque and flux control (DB-DTFC) has demonstrated several technical advantages over classical hysteresis DTC and PI regulator based direct torque control (DTC) methods. These include fast torque control, low ripple, easily integrated dynamic loss minimization control, and one control law that uses the inherent Volt-sec. source properties of power electronics to enable operation over all operating conditions including voltage limits. DB-DTFC uses the fundamental machine model to form the inverse solution for Volt-sec selection at each switching period. Therefore, DB-DTFC is a model-based discrete time controller that relies on accurate machine parameter estimation to provide accurate dynamic torque control. In this paper, a new method for high frequency injection-based real-time self-and mutual inductance estimation is proposed and evaluated in both simulations and experiments. In this new method, the estimated inductances including cross-coupling inductance due to cross-saturation are then used to estimate the stator resistance and permanent magnet flux linkage. The stator flux linkage observer using the identified machine parameters, yields improved stator flux linkage estimates that enable precise torque calculation. Experimental evaluation of the HFI-based flux estimates on torque estimation and control accuracy is performed at an IPMSM drive test bench with torque transducer mounted.

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Analytical Prediction of the Incremental Inductance of the Permanent Magnet Synchronous Motors

Cited by 16 publications

References 6 publications

Design and Optimization of Permanent Magnet Brushless Machines for Electric Vehicle Applications

Design and Optimization of Permanent Magnet Brushless Machines for Electric Vehicle Applications

A Novel Sensorless Initial Rotor Position Estimation Method for Permanent Magnet Synchronous Motors

High frequency injection-based stator flux linkage and torque estimation for DB-DTFC implementation on IPMSMs considering cross-saturation effects

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