About 57 results
https://drivepatents.com/patents/1394526 · 30 Jul 2025
A method comprises operating a plurality of power optimizers connected in series between two input terminals of an inverter, wherein the plurality of power optimizers are connected to a plurality of solar panels to form a plurality of power modules connect...
https://drivepatents.com/patents/1396922 · 21 May 2025
This application provides a photovoltaic system, a protection method, and an inverter system. The system includes a controller and two groups of inverters. The two groups of inverters include a positive inverter group and a negative inverter group. The pos...
https://drivepatents.com/patents/966942 · 26 Nov 2014
Islanding events are detected using measurement information taken from several places in a network, e.g., from a system of intelligent electronic devices (IEDs). In an example method of island detection, phase angle differences between local phase angles a...
https://drivepatents.com/patents/969745 · 24 Sep 2014
A power supply system (101) includes a first power supply apparatus (111a) and a second power supply apparatus (111b) connected to a load in parallel, for supplying power to the load (115). The first supply apparatus (111a) includes a first controller that...
https://drivepatents.com/patents/972933 · 2 Jul 2014
It is described a harmonic current controller for controlling harmonic currents being generated by a grid-side converter of a frequency converter. The frequency converter is adapted to convert an electrical input power of a power supply unit having a first...
https://drivepatents.com/patents/975582 · 30 Apr 2014
A parallel operation control method for different type power generation apparatuses to shift the power generation apparatuses having respective different drooping characteristics, in which the drooping characteristic is defined as a characteristic of decre...
https://drivepatents.com/patents/976297 · 9 Apr 2014
The module (100) has a power source (101) providing a signal (S1) of an electric system, and a converter module (102) that is arranged to convert the signal into an intermediate signal (S INT). A microcontroller (111) is arranged for controlling and adjust...
https://drivepatents.com/patents/978057 · 26 Feb 2014
An HEMS 700 provided in a consumer having a gas power-generator 220 requiring start-up power for starting power generation and power supply means (PV 100, storage battery 200, PCS 400, distribution board 500) for supplying power to a load 300, and controll...
https://drivepatents.com/patents/979859 · 15 Jan 2014
Systems and methods to balance currents among a plurality of photovoltaic units connected in series. In aspects, a management unit is coupled between a photovoltaic energy production unit and a string of energy production units. The management unit has an ...
https://drivepatents.com/patents/979951 · 8 Jan 2014
Method for detecting island operation in distributed electricity generation and for protecting the connected loads in the bars of the generators when island operation occurs, in which, in addition to the power-generating current (h) of the electricity gene...