Inverter device and control method thereof
US8525466B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2012 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | Aug 29, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This inverter device includes a power portion performing PWM control on a voltage command to a motor for each set time period, converting direct-current power into alternating-current power, and outputting the same, a voltage command generation portion generating a voltage command in synchronization with a period N-times (N≧1) longer than the time period, an interval determination portion generating an interval determination signal which is ON during a half period of the time period and OFF during the next half period, a current detection portion detecting the current of the motor at timing of change in the interval determination signal, and a voltage correction portion generating a voltage correction value such that the amount of change in the detected current when the interval determination signal is ON becomes equal to the amount of change in the detected current when it is OFF and correcting the voltage command.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.