By Topic

Research on high torque soft starter of induction motors based on discrete frequency

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Zhiting She ; Electrical and Information Engineering College, Hunan University, Changsha, 410082 CHINA ; Juan Liu ; Bin Zhang ; Yongjin Peng

Soft starters have been widely used in fans and pumps drives. It is difficult to start high-power heavy-duty induction motor for traditional soft starter. To solve the problem of soft starter for large power and heavy load in conventional soft starters, the soft starter based the theory of discrete frequency is studied in this paper, which can make motor start with high torque and little current. Using discrete frequency makes the start frequency of motor from 5.25Hz to 50Hz step by step, which can make start torque larger. This paper presents a method of the calculation of optimal triggering angle which can make the torque be the biggest and positive was produced. The simulation waveform by MATLAB is similar to the real waveform by experiment. Control hardware circuit is simple and dependable. The experiment of the high torque soft starter which has a DSP as microcomputer is completed. The experimental results show that discrete frequency soft starter can start motor smoothly with high starting torque and small starting current. The advantages of discrete frequency soft starting proposed in this paper are stable start process, simple structure, low starting current and high starting torque. The result of load test is identical that conforms the theory is correct and valid.

Published in:

Intelligent Control and Information Processing (ICICIP), 2010 International Conference on

Date of Conference:

13-15 Aug. 2010