Sensorless switched reluctance motor driving apparatus and method thereof
US5955861A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1998 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Jan 26, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/089
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sensorless switched reluctance motor (SRM) driving apparatus comprising: a phase control unit for outputting a start or stop command signal for the SRM and a speed command signal to set rotation speed thereof; a phase detecting circuit for outputting a phase current signal after measuring the phase current transmitted to the SRM; a digital firing angle estimating unit for outputting a rotor phase signal to supply the current to a specific phase of the rotor if the arrangement command signal is input, and for outputting a rotor phase signal after measuring a SRM firing angle by comparing a phase current signal and a reference phase converting period signal as a pulse signal is applied to a phase previously magnetized when the SRM has been rotated; a speed control unit for sending an arrangement command signal to the digital firing angle estimating unit if an operation start signal is input from the phase control unit, for outputting a voltage command signal to control the SRM rotation speed in response to the speed command signal from the phase control unit and the phase converting period signal from the digital firing angle period estimating unit, and generating and inputting a r…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.