Fast Initial Rotor Position Estimation for IPMSM With Unipolar Sequence-Pulse Injection

Lin, Keman; Wang, Peng; Cai, Peizhao; Wu, Xikun; Lin, Mingyao

doi:10.1109/tec.2021.3087646

Cited by 5 publications

(3 citation statements)

References 26 publications

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“…To solve these problems, many researchers have proposed other sensorless control methods suitable for permanent magnet synchronous motors at zero low speed. Lin et alproposed a fast method of single sequence pulse injection, which solved the problem of magnetic polarity judgment without increasing the calculation amount of the system [22]. A four-stage search algorithm is used to measure the initial position of the rotor, and each stage is optimized and adjusted to ensure that the maximum position measurement error is less than 3.6°.…”

Section: Other Zero Low Speed Methodsmentioning

confidence: 99%

Research Review on Sensorless Measurement Technology of Permanent Magnet Synchronous Motor

Zhao

2024

IJMEE

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Permanent magnet synchronous motor (PMSM) has the advantages of high torque/inertia ratio, high power factor, fast dynamic response speed and high reliability, and has been widely used in various high-precision AC drive systems. Incremental encoders are usually used to achieve high precision position feedback information for permanent magnet synchronous motors. The use of sensors leads to cost increase, volume increase and reliability reduction. Therefore, the sensorless measurement technology of permanent magnet synchronous motor is more and more concerned and applied by industry and research fields. In this paper, the related literature of sensorless measurement technology of permanent magnet synchronous motor is investigated, and the sensorless measurement technology is comprehensively reviewed. This paper introduces in detail the basic principle of various sensorless measuring techniques, the accuracy of position measurement and the application in the type of permanent magnet synchronous motor. In this paper, the concept of speed pole logarithm ratio is proposed to divide the speed region, and the initial rotor position, low speed and medium speed non-inductive measurement methods are described and compared. Finally, the non-inductive measurement accuracy of permanent magnet synchronous motor is summarized.

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Section: Other Zero Low Speed Methodsmentioning

confidence: 99%

Research Review on Sensorless Measurement Technology of Permanent Magnet Synchronous Motor

Zhao

2024

IJMEE

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“…Since the demodulation utilizes both cosine and sine excitation signals, it is called here 'quadrature demodulation.' Using V s2 , V c2 , V a2 and V b2 , define new variables additionally: 21) Substituting ( 7), ( 8), (14), and ( 15) into ( 18)-( 21), it follows that X2p = C cos (θex2 + θr2) + tan 2 ∆θr cos θex2 cos θr2 , (22) X2n = C cos (θex2 − θr2) + tan 2 ∆θr cos θex2 cos θr2 , (23) Y2p = C sin (θex2 + θr2) + tan 2 ∆θr cos θex2 sin θr2 , (24) (25) where C = V s sin ∆θ ex cos ∆θ r . Note that ∆θ r = ω r T s /2 is usually a small value, since it is a angle variation over a half PWM interval.…”

Section: B Quadrature Demodulationmentioning

confidence: 99%

“…In order to obtain the desired angle θ r from 2θ r , it is important to determine the initial quadrant [22]- [23]. The angle should be chosen with the aid of sin θ r and cos θ r , and these signals are contained in V s2 and V c2 .…”

Section: Polarity Detectionmentioning

confidence: 99%

Quadrature Demodulation Method for Resolver Signal Processing Under Different Sampling Rate

et al. 2022

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Resolvers are widely used as position sensors to obtain angle information. The resolver requires the excitation signal and its amplitude is modulated by the rotor position. The envelope of the modulated signal can be detected precisely only when the samplings are synchronized with the excitation signal. A large error can occur if the synchronization fails. In this paper, the resolver signals are sampled in synchronization with the pulsewidth modulation (PWM) carrier, not the excitation signal. When the resolver excitation signal frequency and the PWM carrier frequency are different, the envelope cannot be detected, so additional signal processing is required to obtain the angle information. For signal processing, multiple auxiliary signals are synthesized based on the sampled signals and quadrature demodulation is performed. A detailed error analysis according to the PWM frequency and motor speed is also performed. The effectiveness is demonstrated through simulation and experimental evidence.INDEX TERMS Phase-locked loop (PLL), resolver-to-digital conversion (RDC), demodulation, resolver, envelope detection.

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Indirect Method to Measure of Initial Mover Position in Flux-Modulated Linear Actuator for Five-Axis Gantry Robot Using Low-Cost Current Sensors and Considering End Effect

Paul

Chang

2022

IEEE J. Emerg. Sel. Topics Power Electron.

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Fast Initial Rotor Position Estimation for IPMSM With Unipolar Sequence-Pulse Injection

Cited by 5 publications

References 26 publications

Research Review on Sensorless Measurement Technology of Permanent Magnet Synchronous Motor

Research Review on Sensorless Measurement Technology of Permanent Magnet Synchronous Motor

Quadrature Demodulation Method for Resolver Signal Processing Under Different Sampling Rate

Indirect Method to Measure of Initial Mover Position in Flux-Modulated Linear Actuator for Five-Axis Gantry Robot Using Low-Cost Current Sensors and Considering End Effect

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