Minimization of System-Level Losses in VSI-Based Induction Motor Drives: Offline Strategies

Sridharan, Srikanthan; Krein, P.T.

doi:10.1109/tia.2016.2631513

Cited by 49 publications

(16 citation statements)

References 28 publications

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“…With phase increases, the inverter loss increase with number of switching devices, so both the inverter and motor losses should be considered in the LMC strategy for multi-phase motor drive systems. Many LMC strategies for rotating induction motors (RIM) have been proposed [1][2][3][4][5][6][7]. Researches [3], [5], [6] each proposed a system-level RIM loss model and corresponding control strategy, adding inverter losses, DC bus losses and filter circuit losses to the model.…”

Section: Introductionmentioning

confidence: 99%

Loss Minimization Control of Dual Three‐Phase Linear Induction Motor with System‐Level Loss Model

Zhou

Zhao

Liu

2021

IEEJ Transactions Elec Engng

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Traditional loss model of linear induction motors usually only considers iron loss and copper loss. However, the neglect of power electronic losses will reduce the accuracy of model calculations. Moreover, in multi-phase motor drive systems, power electronics losses are relatively higher and cannot be omitted. Considering the above problems, loss models of six-phase inverter under various PWM modulation methods were derived. And combined with an improved dynamic end effect loss model of dual three-phase linear induction motor, a system-level loss model is obtained. Furthermore, optimal excitation current can be calculated based on the model using Newton-Raphson method to minimize system loss. Simulation results showed that this strategy can always bring efficiency improvement under all working conditions, especially under certain light load working conditions (0.2 pu, 5 m/s), the loss reductions of both the inverter and the overall system can achieve by 50% approximately.

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Section: Introductionmentioning

confidence: 99%

Loss Minimization Control of Dual Three‐Phase Linear Induction Motor with System‐Level Loss Model

Zhou

Zhao

Liu

2021

IEEJ Transactions Elec Engng

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“…Generally, there are two main approaches for efficiency optimisation in AC motor drives: model-based and search-based methods [7]. In the model-based methods, the motor loss model is derived and a loss minimisation strategy is realised on the derived model [8][9][10][11][12][13][14][15][16][17][18]. These methods are easy to implement, but they require the exact machine parameters.…”

Section: Introductionmentioning

confidence: 99%

Online maximum torque per power losses strategy for indirect rotor flux‐oriented control‐based induction motor drives

Zarchi

Hesar

Khoshhava

2019

IET Electric Power Applications

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Among the conventional loss minimisation algorithms (LMAs), the model-based approaches have the advantages of fast response and high accuracy. Here, a novel online model-based power losses minimisation approach is presented for indirect field-oriented control (IFOC) of induction motor (IM) drives. The proposed method is introduced as maximum torque per power losses (MTPPL) in which the power losses for a given torque are minimised. The results demonstrate that the proposed approach preserves the LMA merits, while the criterion for the MTPPL scheme is achieved. The mentioned criterion is investigated by a gradient approach so that while the gradient vectors of the torque and power losses are parallel, the MTPPL strategy is realised. The closed-loop IFOC of the MTPPL approach is implemented in real time for a laboratory 2.2 kW threephase IM drive. The experimental results show the capability and validity of the proposed control scheme. Nomenclature V, I, ψ voltage, current, flux vectors T e electromagnetic torque R winding resistance R i iron loss resistance L l leakage inductance L m coupling inductance between stator and rotor p pole pair number of stator ω r electrical rotor speed ω angular speed of rotor flux ω slip = ω − ω r slip speed

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“…This is because that the excitation current component (i ds *) is kept constant and hence the core loss (P Fe ) or no load loss is not minimised. There are mainly two techniques reported in the literature for loss minimisation, namely flux optimisation method and input loss minimisation method [20][21][22][23]. The first method depends upon the loss minimisation through modelling of machine, whereas the latter one depends upon the minimisation of power input for a given speed/ torque.…”

Section: Introductionmentioning

confidence: 99%

Solar powered sensorless induction motor drive with improved efficiency for water pumping

Shukla

Singh

2018

IET Power Electronics

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This study deals with a speed sensorless induction motor drive (IMD) with efficiency optimisation. This drive is driven by a solar photovoltaic array for water pumping. The elimination of speed sensor increases the robustness and decreases cost of the IMD. The speed estimation is achieved by rotor flux-oriented control in stationary reference frame. Moreover, the parameters, namely stator resistance adaptation, make the system parameters insensitive. The efficiency of the drive system is enhanced by optimising the excitation current by using a particle swarm optimisation technique. The smooth operation of overall system during starting and steady-state condition is simulated in MATLAB/Simulink environment and validated on a prototype developed in the laboratory. The efficiency of the system with loss minimisation technique is compared with the conventional IMD. Simulated results comply with the test results and a comprehensive comparison is made to validate the suitability of proposed system.

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Minimization of System-Level Losses in VSI-Based Induction Motor Drives: Offline Strategies

Cited by 49 publications

References 28 publications

Loss Minimization Control of Dual Three‐Phase Linear Induction Motor with System‐Level Loss Model

Loss Minimization Control of Dual Three‐Phase Linear Induction Motor with System‐Level Loss Model

Online maximum torque per power losses strategy for indirect rotor flux‐oriented control‐based induction motor drives

Solar powered sensorless induction motor drive with improved efficiency for water pumping

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