Automatic tracking of MTPA trajectory in IPM motor drives based on AC current injection

Bolognani, Silverio; Petrella, Roberto; Prearo, A.; Sgarbossa, L.

doi:10.1109/ecce.2009.5316066

Cited by 28 publications

(15 citation statements)

References 21 publications

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“…Hence, in applications where  pm variation is expected, it is not recommended to determine I d reference using direct MTPA calculation method described in this paper. Instead, it can be obtained by search algorithms given in [22]- [25] or current signal injection methods proposed by [26]- [29]. The details of above-mentioned MTPA methods are beyond the scope of this paper.…”

Section: A Simulation Resultsmentioning

confidence: 99%

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A New V/f-Based Sensorless MTPA Control for IPMSM Drives

Tang

Xiong

Düşmez

et al. 2016

IEEE Trans. Power Electron.

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Abstract-This paper presents a new closed-loop V/f control scheme for sensorless interior permanent-magnet synchronous motor (IPMSM) drives. The proposed control scheme combines the merits of conventional V/f and field-oriented control (FOC) strategies to achieve simple and high-performance motor drive. Two feedback stabilizing loops are designed to correct V/f voltage vector reference and improve overall system stability. The voltage vector phase angle reference can rapidly be corrected instead of using indirect frequency modulation, which makes it more robust against transient disturbances. In addition, a maximum torque per ampere (MTPA) plug-in block is implemented to optimize torque generation efficiency without intensive power or power factor angle calculations.The proposed scheme is ideal for applications which require good control performance over wide operating speed range. It also shows robustness to parameter variations caused by temperature increase or flux saturation. Theoretical analysis along with comparative simulation and experimental results are provided to validate the effectiveness of the proposed control scheme.

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Section: A Simulation Resultsmentioning

confidence: 99%

“…The rotor poles are related to the system's mechanical characteristic which is described by Eq. (26). In small-signal model, Eq.…”

Section: B Stabilizing Loop Pi Parameters Tuningmentioning

confidence: 99%

A New V/f-Based Sensorless MTPA Control for IPMSM Drives

Tang

Xiong

Düşmez

et al. 2016

IEEE Trans. Power Electron.

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show abstract

“…Nevertheless, the first energy savings are obtained by means of a careful generation of the electromagnetic torque, which entails the electrical motor and its current control. In that frame, a modern and flexible solution is represented by interior permanent magnet (IPM) synchronous motors controlled by a maximum torque per ampere (MTPA) technique [1]- [3]. In IPM motors, the torque is made up of an electrodynamic term, due to the permanent magnets, and a reluctance component, due to the rotor anisotropy.…”

Section: Introductionmentioning

confidence: 99%

“…All MTPA techniques merge the two torque sources making the IPM current space vector to slide along an optimal trajectory in the synchronous d-q plane. When the current working point lies on the MTPA curve, the corresponding (unknown) torque is generated at minimum Joule losses and this is in a measure sufficient for most applications [1], [4]. On the other hand, some applications could be improved by the knowledge of the developed torque, as for example lift gates, test benches, electronic looms [5], [6], or simply for diagnostic purposes, as in [7], where the electromechanical torque estimation is used to find out mechanical anomalies that might turn into mechanical failures.…”

Section: Introductionmentioning

confidence: 99%

Torque Estimation in High-Efficency IPM Synchronous Motor Drives

Tinazzi

Zigliotto

2015

IEEE Trans. Energy Convers.

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In modern electrical drives, the energy saving starts with the careful generation of the electromagnetic torque, which involves the electrical motor and its current control. A modern choice is represented by an anisotropic synchronous permanent magnet (IPM) motor combined with the maximum torque per ampere (MTPA) control technique. The MTPA locus brings along additional information that is worth deepening. In particular, this paper shows that a proper rearrangement of the torque expression in MTPA condition, merged with a simple leastsquare\ud algorithm, returns an accurate on-line estimation of the electromagnetic torque. The effectiveness of the proposed method is proved by a worked out example, based on a IPM drive model fitted with finite-element analysis and experimental measurements, including motor saturation effects. The torque estimator extends its usability in the whole working region of the drive, even during transients outside the MTPA curve, and it comes almost for free. In this, the proposed method should be technically sound in many industrial applications

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“…Currently, the main methodologies applied to the identification of PMSM speed and estimation of rotor position are categorized into the following classes: basic electromagnetic relation based estimation method [9], [10], model reference adaptive system [11][12][13][14], high-frequency injection method [15][16][17][18][19], and nonlinear control theory based method [20][21][22][23]. The estimation method based on observer requires high accuracy of motor parameters, which are actually sensitive to measurement noise.…”

Section: Introductionmentioning

confidence: 99%

New Adaptive Sliding-Mode Observer Design For Sensorless Control Of Pmsm In Electric Vehicle Drive System

Xiong

Zhang

Jing

et al. 2016

International Journal on Smart Sensing and Intelligent Systems

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Abstract-In this study, a new adaptive sliding-mode observer is proposed to estimate the rotor position and speed for sensorless control of permanent-magnet synchronous motor (PMSM) in an electric vehicle drive system. This observer can effectively reduce the estimation errors caused by the inherent chattering phenomenon for a conventional sliding-mode observer and the stator resistance uncertainty due to the variation of motor temperature. This new sliding-mode observer is designed by using a hyperbolic tangent function instead of sign function together with a variable boundary layer, and the new adaptive law is constructed according to the back electromotive force model to reinforce dynamic performance and the robustness of system. Meanwhile, a stator resistance identification algorithm is raised and guaranteed to be stable by using a Lyapunov method. The performance of the developed observer is compared with the conventional sliding-mode controller. Both simulation and experimental results confirm that the chattering phenomenon is effectively eliminated and the estimation accuracy for position and velocity is apparently improved when applying the developed observer in the electric vehicle drive system.

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Automatic tracking of MTPA trajectory in IPM motor drives based on AC current injection

Cited by 28 publications

References 21 publications

A New V/f-Based Sensorless MTPA Control for IPMSM Drives

A New V/f-Based Sensorless MTPA Control for IPMSM Drives

Torque Estimation in High-Efficency IPM Synchronous Motor Drives

New Adaptive Sliding-Mode Observer Design For Sensorless Control Of Pmsm In Electric Vehicle Drive System

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