Power conversion apparatus, power conversion method, motor system, and three-phase motor
US9543849B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2014 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Mar 28, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P27/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power conversion method including: receiving, by a pair of input terminals, an input voltage in which is a single-phase AC voltage; designating a first target voltage ref1, a second target voltage ref2, and a third target voltage ref3 respectively representing consecutive target values of first-phase, second-phase, and third-phase output voltages forming a three-phase AC voltage; and cyclically connecting and disconnecting (i) the input terminals and first output terminals at a duty cycle corresponding to |ref1/in| when an instantaneous value of |in| is greater than an instantaneous value of |ref1|, (ii) the input terminals and second output terminals at a duty cycle corresponding to |ref2/in| when the instantaneous value of |in| is greater than an instantaneous value of |ref2|, and (iii) the input terminals and third output terminals at a duty cycle corresponding to |ref3/in| when the instantaneous value of |in| is greater than an instantaneous value of |ref3|.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.