Sensorless control of permanent-magnet synchronous motors using online parameter identification based on system identification theory

Ichikawa, Shunsuke; Tomita, Mutuwo; Doki, Shinji; Okuma, Shigeru

doi:10.1109/tie.2006.870875

Cited by 323 publications

(190 citation statements)

References 33 publications

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“…The method for estimating rotor position θ can be presented as (5). Also, the information of angles of θ ∆ and θ λ are expressed as (6) and (7).…”

Section: Mathematical Modeling For Mrasmentioning

confidence: 99%

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A Study on Sensorless Control of Transverse Flux Rotating Motor Based on MRAS with Parameter Estimation

Kim¹,

Kim²,

Kisck³

et al. 2011

Journal of Power Electronics

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This paper presents a sensorless control and parameter estimation strategies for a Transverse Flux Rotating Motor (TFRM). The proposed sensorless control method is based on a Model Reference Adaptive System (MRAS) to estimate the stator flux. Parameter estimation theory is also applied into the sensorless control method to estimate motor parameters, such as inductances. The effectiveness of the proposed methods is verified by some simulations and experiments.

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“…The method for estimating rotor position θ can be presented as (5). Also, the information of angles of θ ∆ and θ λ are expressed as (6) and (7).…”

Section: Mathematical Modeling For Mrasmentioning

confidence: 99%

“…The mathematical equation is constructed on an estimated rotating reference frame using Fig.3. Because the model coefficients can be assumed to be almost constant regardless of the rotating conditions [7]. A mathematical equation of TFRM on rotating reference frame is written as (8).…”

Section: Parameter Estimationmentioning

confidence: 99%

A Study on Sensorless Control of Transverse Flux Rotating Motor Based on MRAS with Parameter Estimation

Kim¹,

Kim²,

Kisck³

et al. 2011

Journal of Power Electronics

View full text Add to dashboard Cite

show abstract

“…Temperature estimation reported in the literature include thermal model based methods [3]- [6], back electromotive force (BEMF) based methods [15]- [21] and methods based on the injection of some form of test signal [7]- [13]. Thermal models require precise knowledge of the machine geometry, materials and cooling system for obtaining a precise model for each machine design [3]- [6].…”

Section: Introductionmentioning

confidence: 99%

“…They can provide precise estimates of temperature when the machine rotates above a certain speed, but are not viable when the machine operates at standstill or low speed. Furthermore, knowledge of the machine inductances is needed, which can significantly change with the operating condition of the machine [18]- [21]. Finally signal injection methods require injection of an additional high frequency signal superimposed on the fundamental excitation [7]- [13].…”

Section: Introductionmentioning

confidence: 99%

Permanent Magnet Temperature Estimation in PM Synchronous Motors Using Low-Cost Hall Effect Sensors

Fernández

Hyun

Park

et al. 2017

IEEE Trans. on Ind. Applicat.

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Abstract-Knowledge of the permanent magnet (PM) temperature in PM synchronous machines (PMSMs) is of great importance both for control and monitoring purposes. Increase in PM temperature during motor operation can degrade the magnetic flux strength and consequently the machine's torque production capability, also can cause irreversible demagnetization of the PM. Direct measurement of the PM temperature is not viable in practice, due to both cost and reliability issues. Indirect PM temperature estimation methods recently studied can require knowledge of thermal or electrical model parameters or can have undesired effects on motor operation. In this paper, the feasibility of using low cost halleffect sensors for PM temperature estimation is investigated. Hall sensors are present for detecting the initial position of the rotor in majority of PMSM applications for which incremental encoders are used for control. The proposed method can therefore be implemented with low or no additional cost. Experimental results on two IPMSMs show that the method is capable of providing non-invasive estimation of the PM temperature without a priori motor parameter information for monitoring and protection against excessive increase in temperature. 1 Abstract-Demagnetization, Hall-effect sensor, Permanent magnet, PM synchronous motor, Thermal monitoring.

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“…여기서, 우변의 두 번째 항인 EEMF항은 아래와 같이 식 (5) 로 나타낼 수 있으며, EEMF는 돌극성에 의한 유기 기전력 성분 과 영구자석에 의한 유기 기전력 성분의 합으로 표현된다 [7]. …”

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Improved Transition Method for Sensorless Operation of Interior Permanent Magnet Synchronous Motor Drives

Han¹,

Yoon²,

Cho³

et al. 2016

The Transactions of The Korean Institute of Electrical Engineer

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-This paper proposes the improved transition scheme for a sensorless drive of an interior permanent magnet synchronous motor (IPMSM). In order to operate the IPMSM, the current controller can be used until 300 rpm for the initial operation. After that, the control method of IPMSM is changed to the speed controller for the sensorless control method. At that point, the rotor speed overshoot is generated due to the rapid change of the current reference for the speed controller. The proposed algorithm is able to reduce the overshoot of a rotor speed by compensating the estimated feedforward value to the speed controller. The feedforward value of the current reference is estimated by using a coordinate transformation and is approximated to the current reference after the transition of the control mode. The effectiveness of the proposed scheme is verified by experiments using an IPMSM drive system.

show abstract

Sensorless control of permanent-magnet synchronous motors using online parameter identification based on system identification theory

Cited by 323 publications

References 33 publications

A Study on Sensorless Control of Transverse Flux Rotating Motor Based on MRAS with Parameter Estimation

A Study on Sensorless Control of Transverse Flux Rotating Motor Based on MRAS with Parameter Estimation

Permanent Magnet Temperature Estimation in PM Synchronous Motors Using Low-Cost Hall Effect Sensors

Improved Transition Method for Sensorless Operation of Interior Permanent Magnet Synchronous Motor Drives

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