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http://dx.doi.org/10.5370/KIEE.2017.66.10.1481

Parallel Sensorless Speed Control using Power Angle for Dual SPMSMs Fed by a Single Inverter  

Kim, Kyung-Hoon (School of Electronics Engineering, Kyung-pook National University)
Yun, Chul (School of Electronics Engineering, Kyung-pook National University)
Kwon, Woo-Hyen (School of Electronics Engineering, Kyung-pook National University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.66, no.10, 2017 , pp. 1481-1487 More about this Journal
Abstract
This paper proposes a sensorless speed control algorithm for parallel-connected dual Surface-mounted Permanent Magnet Synchronous Motors fed by a single inverter. For stable parallel operation of synchronous motors with a single inverter, each motor has to be constantly kept in the synchronization state regardless of load torque. If the master motor with the larger load is controlled, the synchronous state will be maintained. Therefore, detection of the master motor is essential. Conventionally, the master motor is determined by comparing the rotor position error from the relation between the back-EMF for torque angle and the flux position. consequently, the position sensor is deemed essential for finding the rotor position. In this paper, we proposed a method that decides the magnitude of the load from the power angle of two motors due to the load variation and selects the motor to control through the sign function for the sensorless speed control without the position sensor. The results of simulation and experiment conducted verify the efficacy of the proposed method.
Keywords
Dual fan motors; SIMM; Select control; Power angle;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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