Validation of a modified direct-self control strategy for PMSM in railway-traction applications

Calleja, Carlos; López-de-Heredia, A.; Gaztañaga, Haizea; Aldasoro, Leire; Nieva, Txomin

doi:10.1109/tie.2016.2572661

Cited by 75 publications

(31 citation statements)

References 20 publications

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“…Calleja, de Heredia, Gaztanaga, Nieva, & Aldasoro, 2016;Cavallaro et al, 2005;Lemmens et al, 2015;Preindl & Bolognani, 2013a;Preindl & Bolognani, 2013bTang, Li, Dusmez, & Akin, 2016, for PMSMs or Ahn et al, 2007;Foo & Zhang, 2016, for RSMs). This simplification will not be true in the most general case when the flux linkage is a nonlinear function of the currents (see e.g.…”

Section: Remark 21 (Affine Flux Linkage)mentioning

confidence: 99%

A unified theory for optimal feedforward torque control of anisotropic synchronous machines

Eldeeb

Hackl

Horlbeck

et al. 2017

International Journal of Control

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KEYWORDSMaximum torque per ampere (MTPA); maximum torque per current (MTPC); maximum torque per voltage (MTPV); maximum torque per flux (MTPF); maximum current (MC); field weakening (FW); analytical solution; optimal feedforward torque control; efficiency; copper losses; anisotropy; synchronous machine; interior permanent-magnet synchronous machine; reluctance synchronous machine; permanent-magnet-assisted or enhanced synchronous machine; quadrics; quartics; Lagrangian optimisation; operation management ABSTRACT A unified theory for optimal feedforward torque control of anisotropic synchronous machines with non-negligible stator resistance and mutual inductance is presented which allows to analytically compute (1) the optimal direct and quadrature reference currents for all operating strategies, such as maximum torque per current (MTPC), maximum current, field weakening, maximum torque per voltage (MTPV) or maximum torque per flux (MTPF), and (2) the transition points indicating when to switch between the operating strategies due to speed, voltage or current constraints. The analytical solutions allow for an (almost) instantaneous selection and computation of actual operation strategy and corresponding reference currents. Numerical methods (approximating these solutions only) are no longer required. The unified theory is based on one simple idea: all optimisation problems, their respective constraints and the computation of the intersection point(s) of voltage ellipse, current circle or torque, MTPC, MTPV, MTPF hyperbolas are reformulated implicitly as quadrics which allows to invoke the Lagrangian formalism and to find the roots of fourth-order polynomials analytically. The proposed theory is suitable for any anisotropic synchronous machine. Implementation and measurement results illustrate effectiveness and applicability of the theoretical findings in real world.

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Section: Remark 21 (Affine Flux Linkage)mentioning

confidence: 99%

A unified theory for optimal feedforward torque control of anisotropic synchronous machines

Eldeeb

Hackl

Horlbeck

et al. 2017

International Journal of Control

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“…Most of them are based on electric railway systems that are an eco-friendlier system when compared to traditional diesel railway systems. Therefore, the propulsion system of an electric railway consists of a power conversion converter and electric motor [1][2][3][4]. At first, DC motors were used for railway systems, however, as technology advances, three-phase induction motors driven by a conventional two-level inverter with insulated gate bipolar mode transistor (IGBT) modules have replaced them [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Heat-Pipe Cooling System Design Processes in Railway Propulsion Inverter Considering Power Module Reliability

Lee

Choi

2019

Energies

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In this paper, the effect of the heat-pipe cooling system design processes on the reliability of the power module in a railway propulsion inverter was investigated. The existing design processes for the heat-pipe cooling system guarantee that the junction temperature of power devices does not exceed the maximum allowable junction temperature when the railway propulsion inverter operates under its mission profile; therefore, each step of the design process was reviewed to analyze the effect of the heat-pipe cooling system. Based on the processes, in the calculation for the required thermal resistance of the heat-pipe cooling system, two difference losses were considered with the thermal resistances of the insulated gate bipolar mode transistor (IGBT) module and the thermal grease at an interface between the baseplate of IGBT module and heat-pipe cooling system. The control scheme and mission profile of the train were taken into account to calculate the power losses. Then, the designed heat-pipe cooling systems were compared in terms of the size and weight. In addition, the junction temperatures and lifetimes of the power module with heat-pipe cooling systems designed by different power losses were estimated and compared. Finally, guidelines for a heat-pipe system cooling design are proposed.

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“…Construction of permanent magnet synchronous motor is quite simple and PMSM motor has high efficiency and high density due to its ruggedness. Hence it has been preferred in wide range of fields like automotive industry, traction device and hybrid electric vehicles [1][2][3][4][5]. Nevertheless, the closed loop speed control of PMSM motor requires the rotor position information and speed [6][7].…”

Section: Introductionmentioning

confidence: 99%

Sensor less control of PMSM fed from three phase four switch inverter based on back EMF observer and sliding mode controller with fast reaching law

R¹,

Balaji²

2018

IJET

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Closed Loop control of PMSM drives require rotor position and angular velocity information, the use of position sensor increases cost of the drive and increases complexity in motor construction. A position sensor less vector control technique is proposed where a back EMF observer is used to estimate motors speed and position signal. Back EMF observer method is simple and has high accuracy in estimating speed of PMSM motor. Permanent magnet synchronous motor is fed from a three-phase four-switch inverter and sliding mode controller is used as a speed regulator. Fast reaching law is added to sliding mode speed controller, which replaces constant switching gain function by variable switching function based on sliding surface. Variable switching function for SMC eliminates the chattering problem that occurs due to high value of constant switching gain. The proposed reaching law for sliding mode controller reduces the time taken for the controller to reach convergence and also increases robustness of the drive during parameter variation and full load conditions. Use of sensor less control technique and four-switch inverter reduced the overall cost of the drive whilst maintaining the performance of the system. Merits of pro-posed sensor less control technique and sliding mode controller with fast reaching law is verified by simulations using MATLAB/Simulink software.

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Validation of a modified direct-self control strategy for PMSM in railway-traction applications

Cited by 75 publications

References 20 publications

A unified theory for optimal feedforward torque control of anisotropic synchronous machines

A unified theory for optimal feedforward torque control of anisotropic synchronous machines

Comparison of Heat-Pipe Cooling System Design Processes in Railway Propulsion Inverter Considering Power Module Reliability

Sensor less control of PMSM fed from three phase four switch inverter based on back EMF observer and sliding mode controller with fast reaching law

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