Dynamic Braking Application on Three Phase Induction Motor using PLC

International Conference on Science and Innovated Engineering

工业技术（总论）;自然科学（总论）

Ir Muhaimin, M.T.^1

Department of Electrical Engineering Lhokseumawe State Polytechnic Jln., B.Aceh Medan Km.280, Buketrata

24301, Indonesia^1

关键词: 3-phase induction motor;    Direction of rotation;    Dynamic braking;    Injection currents;    Programmable logic control;    Rotating direction;    Speed regulation;    Three phase induction motor;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/536/1/012097/pdf
DOI  :  10.1088/1757-899X/536/1/012097

来源: IOP

【 摘 要 】

The use of an induction motor requires the process of stopping the motor speed quickly, using mechanically and electrically generated braking torque. Dynamic braking, which is done by making a magnetic field stationary motor. This condition is carried out by injecting a DC current into the three phase induction motor stator coil after the connection of the stator coil is released from the AC supply voltage source. The advantages of dynamic braking include ease of speed regulation of three-phase induction motors and mechanical losses can be reduced. A system for reversing the direction of star-delta three phase induction motor rotation with Programmable Logic Control (PLC) as a controller. requires an exchange of rotating directions from the direction of turning right to turn left. The process of changing the direction of rotation of the motor requires dynamic braking, the braking process is carried out by injecting a DC current into the stator coil of an induction motor, which is related to PLC. By applying dynamic braking on a three phase induction motor it is obtained faster than without dynamic braking. The injection current is given to a 3-phase induction motor of 1 KW for dynamic braking of 2.2 A. The timing of the motor stops for a minimum load of 100 Watt without braking at 6.2 seconds and with braking of 4.4 seconds, for a maximum load of 600 W, without braking.