Unified Wide-Speed Sensorless Scheme Using Nonlinear Optimization for IPMSM Drives

Sun, Yingguang; Preindl, Matthias; Sirouspour, Shahin; Emadi, Ali

doi:10.1109/tpel.2016.2621064

Cited by 65 publications

(26 citation statements)

References 45 publications

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“…To solve the estimation method switching problem, a unified position estimation method for IPMSM in the full speed range is proposed in [23], [24]. This method obtains the rotor position and speed by solving an optimization problem using the Newton method at both low speed and high speed.…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, based on [25], an improved unified position estimation method for IPMSM with reduced numeric calculation burden is proposed. Like [23]- [25], this paper also turns the position estimation into solving an optimization problem. However, the proposed method only iterates the rotor position while solving the optimization problem.…”

Section: Introductionmentioning

confidence: 99%

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Position Estimation Method of IPMSM in Full Speed Range by Simplified Quadratic Optimization

et al. 2020

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In this paper, a new full-speed-range position estimation method for the interior permanent magnet synchronous machine (IPMSM) is proposed. This method is designed for high power traction motor drives. In such application, variable speed operation from zero to high speed is desired. The objective of this paper is to obtain smooth position estimation in full speed range to guarantee high reliability of the motor control system. Firstly, a quadratic cost function based on the stator voltage equations is constructed. The rotor position in the full speed range is obtained by numerically solving an optimization problem. After obtaining the rotor position, the motor speed is then obtained through a phase-locked loop observer. In such a way, only one variable in the optimization problem has to be solved. Therefore, the numeric calculation burden is greatly reduced. The convexity of the quadratic cost function considering sampling noise as well as parameter mismatch is discussed in detail. Thus, the solvability and accuracy of the estimation result is guaranteed. At last, experiments on a traction motor are conducted to verify the effectiveness of the proposed position estimation method. INDEX TERMS IPMSM, Position sensorless control, Newton method, Full speed range.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Position Estimation Method of IPMSM in Full Speed Range by Simplified Quadratic Optimization

et al. 2020

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“…In order to remove the shaft position sensors, the position and speed sensorless control method must be used. The sensorless control methods can be classified into two classes [5,6]. The first class are high frequency (HF) injections suited to low and zero speed operations [7,8].…”

Section: Introductionmentioning

confidence: 99%

An Improved Sensorless Vector Control Method for IPMSM Drive with Small DC-Link Capacitors

Yin

Luo

et al. 2020

Energies

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In this paper, an improved sensorless vector control method for an interior permanent magnet synchronous motor (IPMSM) drive with small DC-link capacitors is proposed. First, a fast sliding-mode observer was applied, to enlarge the observer bandwidth. Then, an improved estimator based on a proportional integral resonant controller was designed for the estimate speed shaping, which means the actual speed can be tracked. This not only reduces the position estimate error, but also enhances the grid power factor and suppresses the input current harmonics. Simulation and experiments were conducted on a sensorless IPMSM drive system with a small film capacitor. The effectiveness of the proposed estimation method was verified by the simulation and experimental results. The estimated error was reduced and the grid current harmonics satisfy the requirements of EN61000-3-2.

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“…The associate editor coordinating the review of this manuscript and approving it for publication was Zhuang Xu. increases in the volume and expense of the system. As the solutions, position sensorless control [3]- [7] or single current sensor control [8], [9] has been investigated widely in the applications where the cost and size are the main concerns. Interestingly, the position sensorless control with a single current sensor has been gaining more attention as an approach to combine the benefits from these two techniques [10], [11].…”

Section: Introductionmentioning

confidence: 99%

A High Frequency Injection Technique With Modified Current Reconstruction for Low-Speed Sensorless Control of IPMSMs With a Single DC-Link Current Sensor

2019

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This paper proposes a high frequency injection technique applied for low-speed sensorless control of interior permanent magnet synchronous machines (IPMSM) with a single dc-link current sensor. The three-phase currents, which can be reconstructed by the measurement of a dc-link current sensor, always suffer from the immeasurable regions. The most challenging problem exists in the low modulation region, where no phase current can be measured by the dc-link current sensor, and it is rarely solved without PWM modifications. This paper proposes a six-direction square wave high frequency injection method to extend the voltage vector to the measurable region to achieve the three-phase current reconstruction and saliency-based sensorless control without modifying the space vectors of the pulse width modulation (PWM). In addition, the paper comes up with a modified reconstruction scheme to reduce the reconstruction error and improve the accuracy of the position estimation. This low-speed sensorless strategy using a single dc-link current sensor is implemented in dSpace platform and the performance is evaluated by experiments. INDEX TERMS Interior permanent magnet synchronous machines, dc-link current sensor, six direction square wave injection, sensorless control, current reconstruction.

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Unified Wide-Speed Sensorless Scheme Using Nonlinear Optimization for IPMSM Drives

Cited by 65 publications

References 45 publications

Position Estimation Method of IPMSM in Full Speed Range by Simplified Quadratic Optimization

Position Estimation Method of IPMSM in Full Speed Range by Simplified Quadratic Optimization

An Improved Sensorless Vector Control Method for IPMSM Drive with Small DC-Link Capacitors

A High Frequency Injection Technique With Modified Current Reconstruction for Low-Speed Sensorless Control of IPMSMs With a Single DC-Link Current Sensor

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