Programmable alternating current (AC) load having regenerative and dissipative modes

US10539629B2 · kind B2 · utility

Inventors

• Dazhong Gu · Brooklyn, US
• Dariusz Czarkowski · New York, US
• Francisco de Leon · Ridgewood, US
• Kamiar J. Karimi · Kirkland, US
• Eugene V. Solodovnik · Kenmore, US
• Shengyi Liu · Sammamish, US

Key dates

• Filing date: Dec 17, 2018
• Grant date: Jan 21, 2020
• Expiry date: Dec 17, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R31/42
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A programmable alternating current (AC) load in communication with an equipment under test (EUT) is disclosed, where the EUT generates an equipment under test voltage. The programmable AC load includes an active load profiler (ALP) for creating current modulation load profiles that are sent to the EUT. The ALP includes a voltage source inverter, a control module in operative communication with the voltage source inverter of the ALP, and a grid-connected inverter having an AC side and a direct current (DC) side. The AC side of the voltage source inverter is in communication with the EUT for receiving the equipment under test voltage. The control module sends a control duty signal to the voltage source inverter indicating a switching frequency and a duty cycle of the current modulation load profiles.