Mathematical Model of Linear Switched Reluctance Motor with Mutual Inductance Consideration

Abstract

This paper presents developing an mathematical model for linear switched reluctance motor (LSRM) with account of the mutual inductance between the phases. Mutual interaction between the phases of LSRM gives the positive effect, as a rule the power of the machine is increased by 5-15%. . The possibility to apply this type of electric machines is defined by the great value of normal force component between stator and rotor, which can be used for generation of levitation and assurance of guidance system. Such kind of electric machine obtains the passive rotor consisted of ferromagnetic elements located along track structure. Rotors elements have great mechanical strength, which eliminates restrictions for transmission of mechanical traction force and suspension and gives the possibility to create the passive discrete track structure with reduced materials consumption, and at the same time, the design of stator winding with concentrated coils is extremely simple. Keyword: Linear motorHowever, the large air gap (air gap12 mm) reduces the efficiency of the drive system (efficiency 76%).The design and control objectives are to maximize the efficiency at the given motor dimensions and the output power. The purpose of this paper is the design rationale for the choice of the linear motor, which increases efficiency.Switched reluctance machines (SRM) are designed as a high-quality type of electromechanical energy converter and can be applied to the industrial transport. The main distinguishing feature of SRM is the lack of winding at the toothed rotor. In comparison with electrical machines of another types, SRM is structurally simpler and technologically effective, it has less copper and insulating materials consumption when almost identical masses of electrical steel. As a result it makes possible to achieve higher energy and weight-size parameters, to reduce the cost of electrical machines and expenses for their operation.During SRM modelling and designing it is usually assumed that all machine's phases are independent both in electrical and magnetic relation. It is accepted that mutual inductance is low in these machines and it can be ignored. However, at the present time researchers are having tendency to take into account the mutual influence of phases for classical . This mutual interaction gives the

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Starting Operating Mode of the Combined Traction Levitation System of the Vehicle Equipped with Magnetic Suspension

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