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Direct torque control – the world’s most advanced AC drive technology. The purpose of this technical guide is to explain what DTC is; why and how it has evolved; the basic theory behind its success; and the features and benefits of this new technology. Table of contents. 04. 05 – 12. 06 – 07. 07 – 09. 10 – 11. 12 – 16. 17 – 25. 17 – 18. 18 – 22.
Basic principle. An electric motor is a device converting electrical energy into mechanical energy (generally a torque). This conversion is usually obtained through the generation of a magnetic field by means of a current flowing into one or more coils. Electrical energy.
OBJECTIVE TESTS – 29. In a d.c. motor, undirectional torque is produced (a) armature current multiplied by back e.m.f. with the help of (b) power input minus losses. brushes (b) commutator (c) power output multiplied by efficiency. (c) end-plates (d) both (a) and (b) (d) power output plus iron losses.
The DC motor creates torque from electrical excitation of two magnetic circuits, the field and the armature. If the process is partially reversed by electrically exciting the stator mounted
This unit will discuss how these magnetic fields are produced in dc motors, and how magnetic fields induce voltage in dc generators. The basic principle of a dc motor is the creation of a rotating magnet inside the mobile part of the motor, the rotor.
Introduction. Open-loop (plant) model of the DC motor. Combination of the electrical and mechanical models Plant model is the starting point in the control design. Brief recap on control theory tools in the context of the DC motor. Block diagram, transfer function, 2nd-order system, state-variable form Basic knowledge of these tools is ...
excited dc motor. Description and operation of the series, shunt, and compound dc motors. Comparing the speed-torque characteristics of the separately-excited, series, shunt, and compound dc motors. Ex. 2-3 Separately-Excited, Shunt, and Compound DC Generators ..... 99
