Uninterruptible power supply device and uninterruptible power supply system using the same
US10263457B2 · kind B2 · utility
4Cited by
0References
4Claims
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Assignee
Inventors
Key dates
| Filing date | Apr 1, 2015 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Apr 1, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An uninterruptible power supply device (60) does not have a wire connecting a bidirectional chopper (24) to a neutral point (NP). The bidirectional chopper (24) includes first and second capacitors (C11, C12), first to fourth transistors (Q11-Q14), and a normal mode reactor (50). In a discharging mode, a controller (63) causes the second and third transistors (Q12, Q13) to be complementarily turned on and controls the ON period of each of the second and third transistors (Q12, Q13) so that terminal-to-terminal voltages (V11, V12) of the first and second capacitors (C11, C12) are equal to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.