Estimation of parameters of an induction machine
US8415916B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 2, 2010 |
| Grant date | Apr 9, 2013 |
| Priority date | — |
| Expiry date | Oct 13, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/343
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and an arrangement are disclosed for identifying one or more parameters of an induction machine when the induction machine is connected to the output phases of a voltage source inverter and the induction machine is in standstill state. The method can include a first phase for magnetizing the machine by providing a first DC magnetization current until the induction machine reaches steady state, the current reference of the inverter having a first value (idcref1). A first maximum value (imzmax) of the stator current (isd) is measured during a zero voltage vector. In a second phase, the machine is magnetized by providing a second DC magnetization current, the current reference having a second value (idcref2) which is higher than the first reference (idcref1). A second maximum value of (isdzmax) the stator current is measured during a zero voltage vector, and a parameter of the induction machine is estimated when the measured first and second maximum values are equal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.