Devices, systems, and methods for a direct-current energy storage to power an alternating current load
US12355287B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2024 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | May 7, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/062
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method to connect a direct current power (DC) source to a universal alternating current (AC) load can include an energy storage device configured to output a fixed voltage in a range of 84-135 volts (for 120 volt based systems) or 180-264 volts (for a 230 volt based systems). The universal AC load has input comprising a diode bridge followed by a storage capacitor. The unregulated DC source can be connected to the universal AC load by a switch that is turned on (closed) and off (open) with a low-frequency signal (e.g., 90 and 135 Hz) and a duty cycle between 80% and 98%. A sensor and inductor can be added to protect from excessive currents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.