Review and Classification of MTPA Control Algorithms for Synchronous Motors

Dianov, Anton; Tinazzi, Fabio; Calligaro, Sandro; Bolognani, Silverio

doi:10.1109/tpel.2021.3123062

Cited by 62 publications

(12 citation statements)

References 133 publications

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“…The most common OFTC strategy is MTPC (often also called MTPA) which minimizes copper (Joule) losses only. A comprehensive literature review on MTPC was recently published in [19]. The early contribution [10] computes optimal stator current angles considering current and voltage limits in PMSM electrical drives to minimize copper losses.…”

Section: Optimal Feedforward Torque Control (Oftc)mentioning

confidence: 99%

“…, N D } of the considered validation set and, then, associated to and collected in error bars with a width of 0.1 A. Finally, mean error e as in (18), standard error deviation σ e as in (19) and error distribution probability…”

Section: Validation Scenario Ii: Approximation Accuracymentioning

confidence: 99%

“…In this paper, a novel ANN-based OFTC is proposed. The OFTC problem has been discussed in numerous publications (see e.g., [10][11][12][13][14][15][16][17][18][19] for MTPC/MTPA, [12,14,18,[20][21][22][23][24] for FW, [4,5,12,25] for MC, [4,5,13,[26][27][28][29] for MTPL, and [6,14,[20][21][22][23] for MTPV). The goal of OFTC is to compute or look up optimal reference currents for each of the aforementioned operation strategies.…”

Section: Introduction 1motivationmentioning

confidence: 99%

See 2 more Smart Citations

Artificial Neural Network Based Optimal Feedforward Torque Control of Interior Permanent Magnet Synchronous Machines: A Feasibility Study and Comparison with the State-of-the-Art

2022

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A novel Artificial Neural Network (ANN) Based Optimal Feedforward Torque Control (OFTC) strategy is proposed which, after proper ANN design, training and validation, allows to analytically compute the optimal reference currents (minimizing copper and iron losses) for Interior Permanent Magnet Synchronous Machines (IPMSMs) with highly operating point dependent nonlinear electric and magnetic characteristics. In contrast to conventional OFTC, which either utilizes large look-up tables (LUTs; with more than three input parameters) or computes the optimal reference currents numerically or analytically but iteratively (due to the necessary online linearization), the proposed ANN-based OFTC strategy does not require iterations nor a decision tree to find the optimal operation strategy such as e.g., Maximum Torque per Losses (MTPL), Maximum Current (MC) or Field Weakening (FW). Therefore, it is (much) faster and easier to implement while (i) still machine nonlinearities and nonidealities such as e.g., magnetic cross-coupling and saturation and speed-dependent iron losses can be considered and (ii) very accurate optimal reference currents are obtained. Comprehensive simulation results for a real and highly nonlinear IPMSM clearly show these benefits of the proposed ANN-based OFTC approach compared to conventional OFTC strategies using LUT-based, numerical or analytical computation of the reference currents.

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Section: Optimal Feedforward Torque Control (Oftc)mentioning

confidence: 99%

Section: Validation Scenario Ii: Approximation Accuracymentioning

confidence: 99%

Section: Introduction 1motivationmentioning

confidence: 99%

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Artificial Neural Network Based Optimal Feedforward Torque Control of Interior Permanent Magnet Synchronous Machines: A Feasibility Study and Comparison with the State-of-the-Art

2022

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“…To simplify the notation and the dissertation, magnetic saturation, iron losses and PM demagnetisation effects are neglected. However, the aforementioned effects can be included as in [15,16]. Finally, the steady-state torque of a synchronous motor can be computed as follows:…”

Section: Motor Model and Operating Conditionmentioning

confidence: 99%

A Review about Flux-Weakening Operating Limits and Control Techniques for Synchronous Motor Drives

2022

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This paper deals with motor design aspects and control strategies for the flux-weakening (FW) operation of synchronous motors. The theory of FW is described by taking into account different control schemes. The advantages and drawbacks of each one are discussed, as well. Moreover, some motor design considerations for achieving an effective FW operation are illustrated for permanent magnet (PM), wound rotor (WR) and reluctance (REL) synchronous machines, using the per unit approach. The distinguishing characteristic of this review provides two-fold attention on both machine design and control strategies obtained by several collaborations with industrial and commercial companies.

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“…On the other hand, the reference frame based model of the machine has less numerical accuracy and stability when interface with EMTP in large time steps [17]. The reference frame theory is commonly and widely used in machine control [19]- [21]. The motivation of this work is to develop a decoupled accurate model of power cable.…”

Section: Introductionmentioning

confidence: 99%

A Power Cable Reference Frame dqn Model for Fundamental Frequency Analysis

AlBader¹,

Chen²,

Toliyat³

2022

IEEE Access

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This paper proposes an underground power cable dqn model that can be used for both electric machines analysis and control at or around the fundamental rated power frequencies (50Hz or 60Hz). The model can be used as an observer to estimate the cable output states. This makes the far end measurements available through estimations for long cable applications such as electrical submersible pumps and wind generations. The model can be used also in simulation analysis with accelerated simulation time. Advantages include fast computation, decoupled network, and ability to work under unbalanced supply or network conditions without requiring an interface stage, such as the Eigen vectors calculation, between the cable and electric machine models. Detailed model derivations and analyses, including balanced, unbalanced, and transient conditions, are provided. Verifying using MATLAB SIMULINK, the model has a higher accuracy in balanced and unbalanced conditions when compared to the per-phase shifted frequency analysis (SFA) model in simulations, along with one of the shortest computation times among all simulated models. For the experiment, the researchers design a test consisting of a 20 ft cable operating at 6 kHz used to emulate an equivalent 2,000 ft cable with the proposed cable model as an observer., the results prove to be accurate, with the maximum error between the measured cable output and the model output estimation at 0.12%. Therefore, the model is verified by the experiments in the same given conditions as the simulations, and it can be considered as a reference in the future.

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Review and Classification of MTPA Control Algorithms for Synchronous Motors

Cited by 62 publications

References 133 publications

Artificial Neural Network Based Optimal Feedforward Torque Control of Interior Permanent Magnet Synchronous Machines: A Feasibility Study and Comparison with the State-of-the-Art

Artificial Neural Network Based Optimal Feedforward Torque Control of Interior Permanent Magnet Synchronous Machines: A Feasibility Study and Comparison with the State-of-the-Art

A Review about Flux-Weakening Operating Limits and Control Techniques for Synchronous Motor Drives

A Power Cable Reference Frame dqn Model for Fundamental Frequency Analysis

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