Speed and torque estimation of variable frequency drives with effective values of stator currents
| Autor: | Y. Kouhi, Martin Mönnigmann, Jens Müller, Sebastian Leonow |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0209 industrial biotechnology
Stator 020208 electrical & electronic engineering Phase (waves) 02 engineering and technology Progressive cavity pump law.invention Root mean square 020901 industrial engineering & automation Control and Systems Engineering Control theory law 0202 electrical engineering electronic engineering information engineering Torque Inverter Induction motor Voltage Mathematics |
| Zdroj: | IFAC-PapersOnLine. 53:8744-8749 |
| ISSN: | 2405-8963 |
| DOI: | 10.1016/j.ifacol.2020.12.270 |
| Popis: | We introduce a new method for torque and speed estimation of induction motors under voltage/frequency (V/f) open-loop control. In contrast to existing approaches that need the phase current, the proposed algorithm only requires the effective value (root mean square) of the stator current and the synchronous frequency, which are usually available from variable frequency inverter (VFI) at no additional cost. Our approach is particularly useful for inverter-fed motor-pumps in which the load varies slowly. We demonstrate the proposed algorithm is able to estimate the pump torque, speed, differential pressure and flow rate in a hydraulic process with a progressive cavity pump. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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