Energy-saving Controller for Three-phase Indction Motors
The present invention relates to an energy-saving system for three-phase induction motors and is based on the principle of variable voltage control at constant speed. It is composed of a microprocessor, exampling circuit, sensing circuit, acquiring circuit, firing circuit, and AC to AC converter. The system is to automatically adjust the voltage to the induction motor with the variation in the motor load, in order to obtain high operating power factor and efficiency. The system will result in considerable energy-savings when a three-phase induction motor runs under constant light-load or variable-load with low duty ratio.
Inventor: Cheng, Ka Wai Eric | Xue, Xiangdang
Priority Number: US8217618B2
IPC Current: H02P000318
US Class: 318812 | 318727 | 318800 | 318809
Assignee Applicant: The Hong Kong Polytechnic University
Title: Energy-saving controller for three-phase induction motors
Usefulness: Energy-saving controller for three-phase induction motors
Summary: Controller for three-phase induction motor operating under a constant light load or a variable load with low duty ratio.
Novelty: Controller for three-phase induction motor, includes AC-AC converter which drives the three-phase induction motor based on sixth signal outputted by a firing circuit
汽车
发动机/电机
CHENG Ka Wai Eric
XUE Xiangdang
FUNG Tat Man Peter
美国
