About 29 results
https://drivepatents.com/patents/1386161 · 11 Feb 2026
The present invention discloses a harmonic filter (1,2) for single-phase and three-phase alternating current installations using two coils (10, 11) arranged in series, each of which is helically wound around the same ferromagnetic core (9,9'), but in oppos...
https://drivepatents.com/patents/1392798 · 31 Dec 2025
This application provides a grid-tied inverter apparatus and a grid-tied control method. The inverter apparatus includes an inverter circuit, a controller, and a filter circuit. The controller is configured to adjust switching frequencies of a plurality of...
https://drivepatents.com/patents/1398517 · 5 Nov 2025
Defining fsw (kHz) as the carrier frequency adopted for generation of a drive signal (Sd), Pmax (kW) as the maximum input power of a power conversion unit (10), and Td (µs) as the dead time of the drive signal (Sd), the expression Td ≤ (34.00 / fsw - 0....
https://drivepatents.com/patents/1391661 · 29 Oct 2025
The invention provides a control method and system for power converters that are electrically interconnected through a power grid. The control mechanism uses a digital model of a mechanical shaft for emulating the electrical coupling between each pair of p...
https://drivepatents.com/patents/1394369 · 3 Sep 2025
This application provides a power supply system and a grid-connected control method. The power supply system includes a power supply, a collection control circuit, a load, and an inverter. The collection control circuit includes a grid-connected collection...
https://drivepatents.com/patents/1400477 · 3 Sep 2025
This application provides a power supply system, a power supply method, a control apparatus, and a computer storage medium, which have high power supply efficiency, high loading capability, and little pollution to a harmonic current and a reactive current ...
https://drivepatents.com/patents/1393319 · 9 Jul 2025
A multi-inverter parallel system and a method for controlling grid connection of an inverter are provided. The system includes a first inverter and a second inverter. The first inverter includes a first controller, a first inverter circuit, and a first rel...
https://drivepatents.com/patents/1324180 · 4 Aug 2022
Methods, systems, and media for presenting media content in response to a channel change request are provided. In some implementations, methods for presenting media content in response to a channel change request are provided, the methods comprising: causi...
https://drivepatents.com/patents/965796 · 24 Dec 2014
Embodiments to systems and methods for tuning the control of a shunt active power filter over a variable frequency. In aspects, a shunt active power filter is provided to filter current harmonics from the output delivered to a dc load via a recitifier. The...
https://drivepatents.com/patents/978484 · 12 Feb 2014
The photovoltaic power plant has photovoltaic modules (1) that are configured to generate an electric power. The photovoltaic modules are connected together to form several strands (2). A central converter (5) converts generated electric power into electri...