PROBLEM TO BE SOLVED: To make it possible to reduce the starting current without lessening torque by connecting a capacitor with a lead phase which is parallelly connected to the induction motor at the time of start-up of the induction motor.WATANABE HIROO...
Program EMTP ATP is a very effective tool for solving and analysis of transients of various electrical circuits. We used this program for analysis energy stored in inductance of induction motor and the influence to starting current. Paper deals with the situation repeating the induction motor startin...
PURPOSE:To reduce the capacity of the converter by determining as the target value of the speed, the estimated rotation speed of the induction motor with the slip rate being added to the former after the starting being computed from the torque to be generated by the motor and the load condit...
A circuit for the automatic starting of an induction motor of the type having a main or running winding and at least one phase or starting winding. The starting circuit comprises a current sensing means which is series connected with the main or running winding to a source of electrical power...
PURPOSE:To reduce the size of an induction motor starting system by converting DC current to AC current via an inverter and controlling the frequency, thereby gradually increasing the frequency to start the motor with the low current. CONSTITUTION:A DC current obtained from a solar battery 1 is...
Starting Methods of Three Phase Induction Motor: Different methods, like DOL, Star Delta, and Auto Transformer starters, are used to reduce starting current and ensure smooth motor operation. Let’s consider how a3 phase inductor motorstarts. We apply a three-phase supply to the motor’s stator...
STARTING METHOD OF INDUCTION MOTOR PROBLEM TO BE SOLVED: To select a generator with a small capacity rating as compared with the capacity of an engine generator by performing the delay contr... S Sadaaki,庄坪 貞明 被引量: 0发表: 1999年 METHOD FOR AT LEAST PARTIALLY AUTOMATED STARTING OF ...
A method is provided for controlling a three-phase, AC induction motor. Each phase of the AC induction motor is connected to an AC input source by a thyristor switch and a bypass contactor connected in parallel in order to provide voltage and current to the AC induction motor. The method ...
Motor starting circuit A start circuit for an induction motor having a main winding and a start winding includes a sensor of main-winding current. A detector detects the level of main-winding current sensed by the sensor. The start circuit includes a reference... J Pertessis,J Knauer - US...
Therefore, how to reduce the large current impulse of induction motor at the starting moment is the most important problem in the operation of the motor. Therefore, we must try to improve the starting method of the motor, so as to achieve the smooth and no impact start of the motor, so...