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Temperature Dependence Of Emf
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ELECTRIC SERVO MOTOR EQUATIONS AND TIME CONSTANTS
support.controltechnologycorp.comIn all permanent magnet motors there is an additional affect that temperature has on the motor’s mechanical time constant only. As shown in eq (a) a motor’s mechanical time constant changes inversely with any change in both the back EMF, Ke, and torque constant, KT. Both Ke and KT have the same functional dependence on the motor’s air
Electric Motors and Drives
www.emic-bg.orgOperating temperature and cooling 39 Torque per unit volume 40 Power per unit volume – importance of speed 41 Size effects – specific torque and efficiency 41 Efficiency and speed 41 Rated voltage 41 Short-term overload 42 Review Questions 42 2 POWER ELECTRONIC CONVERTERS FOR MOTOR DRIVES 45 Introduction 45 General arrangement of drives 45