Derivation of Dynamic Characteristics for Induction Motor Support

سال انتشار: 1403
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 90

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شناسه ملی سند علمی:

ISME32_375

تاریخ نمایه سازی: 15 تیر 1403

چکیده مقاله:

In induction motors, the rotor rotates within the supporting structure i.e. bearing support. The dynamic behavior of the rotor depends on the rotor itself, dynamic characteristics of the bearings, and supports structure. To perform rotordynamic analysis, the rotor elastic properties i.e. mass, inertia, stiffness from the rotor elements, bearings, and supports should be derived. In rotordynamic analysis, each support is reduced to two single degree of freedom spring-mass system in both the horizontal and vertical directions. In this paper, the dynamic characteristics of the supports are studied. We present a finite element method to calculate the equivalent mass and stiffness of the supports in a typical induction motor. We assume the equivalent supports properties remain unchanged regardless of the rotor speed or any dynamic excitation. The supports stiffness is computed based on static deflection of the bearing pedestal and the supports equivalent mass is derived from the modal analysis of the supporting structure.

نویسندگان

Hashem Aghakhani

Dynamic Calculation Expert, R&D Department, MAPNA Generator Engineering and Manufacturing (PARS), Karaj

Samira Kaviani

Dynamic Calculation Expert, R&D Department, MAPNA Generator Engineering and Manufacturing (PARS), Karaj

Ali Ghaheri

Head of Dynamic Group, R&D Department, MAPNA Generator Engineering and Manufacturing (PARS), Karaj