Title :
Sensorless Vector Controlled Drive For Reciprocating Compressor
Author :
Dianov, Anton ; Choi, Jae-Young ; Lee, Kwang-Woon ; Lee, Joon-Hwan
Author_Institution :
Samsung Electron., Suwon-City
Abstract :
This paper presents a new algorithm for position sensorless vector control of the permanent magnets synchronous motors (PMSM), which is based on the well-known approach, when rotor position and speed information is obtained by using current error between actual and estimated currents. Estimated current is calculated using motor model, which is written in the synchronous reference frame dq. The current difference is decomposed into two components. One of them is used for motor back-emf and speed estimation and another one is used as a correction term. Rotor position is calculated as an integral of the estimated speed. Utilization of two current error components allows to build reliable system with low estimation error, where one current error component is used for estimation in static modes and another one in dynamic mode. Robustness of the proposed algorithm and its sensitivity to the motor parameters variations are also described. This paper pays attention to the drive starting procedure in the sensorless mode as well.
Keywords :
angular velocity control; electric potential; machine vector control; permanent magnet motors; rotors; synchronous motor drives; PMSM; motor back-emf; permanent magnets synchronous motors; position sensorless vector control; reciprocating compressor; rotor position; sensorless vector controlled drive; speed estimation; synchronous reference frame; Current measurement; Estimation error; Home appliances; Magnetic materials; Permanent magnet motors; Phase measurement; Rotors; Sensorless control; Synchronous motors; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2007. PESC 2007. IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-0654-8
Electronic_ISBN :
0275-9306
DOI :
10.1109/PESC.2007.4342052