PROBLEM TO BE SOLVED: To solve problems that a structure of a sheet aluminum outside a cylindrical frame prevents the heat of a stator from conducting directly and that heat cannot sufficiently be dissipated because of a gap that is caused by dimensional dispersion in the conventional art....
An induction motor is an alternating-current motor in which a primary winding on one member (usually the stator) is connected to the power source and a polyphase secondary winding or a squirrel-cage secondary winding on the other member (usually the rotor) carries induced current. ...
The advent of torque and flux control techniques have partially solved induction motor control problems, because they are sensitive to drive parameter variations and performance may deteriorate if conventional controllers are used. Intelligent controllers are considered as potential candidates for such an ...
The advent of vector control techniques has partially solved induction motor control problems because they are sensitive to drive parameter variations and performance may deteriorate if fixed parameter controller are used. Fuzzy logic-based controllers are considered as potential candidates for such ...
PROBLEM TO BE SOLVED: To make it possible to accelerate an induction motor with good efficiency with the rotational angular velocity of an induction motor coincident quickly with the angular velocity command of an inverter by a method, wherein, when a torque component becomes smaller than a synch...
Two-dimensional finite element magnetic field equations are coupled with the electri~: circuit equations and solved using the Newton-Raphson and Crank-Nicholson methods. The simulation predicts main and aWJ;iliary winding cur· rents, induced rotor currents, hysteresis losses and motor torque as ...
The problem has also been solved with more sophisticated approach for non-linear system identification (Wang, Chiasson, Bodson, & Tolbert, 2005). Toliyat, Levi, and Raina (2003) have presented a complete survey on the various approaches to the parameter estimation of induction motor. A ...
As a case in point, we show that the practically important example of the induction motorcannot be solvedwith a PBC in two stages. It is, however, solvable carrying outsimultaneouslythe energy-shaping and the damping injection. The resulting controller is a simple output feedback scheme that ...
Pulsewidth modulation (PWM) waveforms for decreasing the acoustic noise of an induction motor are presented and relate to earlier work concerning the loss of minimum PWM waveforms. The proposed control scheme combines merits of PWM control with those of pulse amplitude modulation (PAM) control to ...
Linear induction motor (LIM) has the advantages of low noise, strong climbing ability and small turning radius. It is widely used in middle-low speed maglev traffic. However, in actual operation, the linear motor will weaken the thrust output due to the existence of the end effect which will...