Inverter circuit based on a heric topology, inverter, and photovoltaic power system
US12034380B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2021 |
| Grant date | Jul 9, 2024 |
| Priority date | — |
| Expiry date | Sep 1, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This application discloses an inverter circuit for an inverter such as a photovoltaic inverter. Also disclosed are inverters and photovoltaic power systems including such inverter circuits. The inverter circuit is based on a HERIC topology, and in the inverter circuit a third capacitor and a fourth capacitor are bridge-connected between a bus and a first longitudinal bridge and between the bus and a second longitudinal bridge respectively. In this way, when the inverter circuit goes from a starting phase to a freewheeling phase, the third capacitor and the fourth capacitor can stabilize a voltage fluctuation caused by different turn-off speeds of the switching transistors in the HERIC topology, to prevent resonance caused by the voltage fluctuations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.