control‚ high starting torque‚ quick starting‚ stopping‚ reverse and acceleration and free from harmonics found in AC. Applications of DC motors include but are not limited to: Transportation such as electrical locomotives‚ rapid transit systems and trolley cars Cranes‚ hoists and in conveyers Rolling mills Constant speed lathes Centrifugal pumps‚ fans‚ blowers‚ reciprocal pumps and machine tools like drills. Elevators‚ heavy planers‚ air compressors and intermittent high torque loads The theory behind
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Introduction Chapter 3 Electromechanical Energy Conversion Topics to cover: 1. Introduction 3. Force and Torque 5. Friction 2. Electro-Motive Force (EMF) 4. Doubly-Excited Actuators 6. Mechanical Components Introduction (Cont.) For energy conversion between electrical and mechanical forms‚ electromechanical devices are developed. In general‚ electromechanical energy conversion devices can be divided into three categories: – Transducers (for measurement and control)‚ which transform
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magnetic field in the motor is rotating in a counterclockwise direction. With a rotating magnetic field present in the motor‚ the induction motor will develop a net torque in the direction of motion‚ and that torque will keep the rotor turning. If the motor’s rotor had originally been turned in a clockwise direction‚ the resulting torque would be clockwise and would again keep the rotor turning. Double Revolving Field Theory According to this theory‚ any alternating quantity can be resolved
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following parameters should be known * Current in rotor in case of Induction motor is “AC” and in case of synchronous it is “DC”[2] * Magnetization in case of Induction motor is induced while in Synchronous it is fed by external source[2] * Torque of Induction Motor is lower than synchronous motor[2] * An induction machine is an asynchronous machine that has a magnetic circuit interlinked with two electric circuits‚ or sets of circuits‚ rotating with respect to each other.[3] * Power
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speed of motor. The speed regulator uses a PI controller in order to obtain the electromagnetic torque needed to reach the desired speed. Current controller controls the armature current by computing the appropriate thyristor firing angle or by using the firing gate angle. This generates the rectifier output voltage needed to obtain the desired armature current and thus the desired electromagnetic torque. This report also includes the work already completed and work planned for the next semester.
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Comprehensive Formulation for the Optimal Control Of Plug-In Hybrid Electric Vehicles Avinash Gali December 22‚ 2010 Cheol W. Lee‚ Ph.D. Associate Professor Industrial and Manufacturing Systems Engineering University of Michigan – Dearborn Abstract: The objective of this study is develop a comprehensive formulation for the optimal control of Plug-In Hybrid Electric Vehicles (PHEV) considering various factors such as battery life‚ fuel economy‚ overall energy usage and emissions. Implications
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Module 9 DC Machines Version 2 EE IIT‚ Kharagpur Lesson 39 D.C Motors Version 2 EE IIT‚ Kharagpur Contents 39 D.C Shunt Motor (Lesson-39) 4 39.1 Goals of the lesson ……………………………………………………………….. 4 39.2 Introduction ………………………………………………………………………. 4 39.3 Important Ideas……………………………………………………………………. 5 39.4 Starting of D.C shunt motor. ……………………………………………………… 7 39.5 39.6 39.4.1 Problems of starting with full voltage. ………………………………… 7 39.4.2 A simple starter. ……………………………………………………….. 7 39.4.3
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Batch: 10 Roll: Sh-099 Introduction The basic theory on a ballistic galvanometer starts with torque associated with a current carrying loop. A brief review of ordinary moving coil galvanometer is presented followed by the effects of transient currents. This paves the way for a detailed analysis of ballistic galvanometer. Torque on a Current Loop It is well known that a current loop behaves like a magnetic dipole. The magnitude of the magnetic moment‚ associated
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failures • Torsion test vs.Tension test • Hot torsion testing Suranaree University of Technology Tapany Udomphol May-Aug 2007 Objectives • This chapter provides fundamental knowledge of torsion test and significant parameters such as torque‚ modulus of rupture in torsion and angle of rotation will be highlighted. • Different types of torsion failures will be evaluated and differentiated from tension failures. Suranaree University of Technology Tapany Udomphol May-Aug 2007
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GROUP 4 JULY 26‚ 2013 EE 4101 ENGR. KENNETH F. FAJILAN Reluctance Motor Introduction A reluctance motor is a type of electric motor that induces non-permanent magnetic poles on the ferromagnetic rotor. Torque is generated through the phenomenon of magnetic reluctance. There are various types of reluctance motor: Synchronous reluctance Synchronous reluctance motors have an equal number of stator and rotor poles. The projections on the rotor are arranged to introduce internal flux “barriers“
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