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1. (WO2018220592) APPARATUS FOR BYPASSING A LOAD CURRENT GOING THROUGH AN AC-AC SERIES VOLTAGE REGULATOR UNDER OVERCURRENT CONDITION

Pub. No.:    WO/2018/220592    International Application No.:    PCT/IB2018/053931
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Sat Jun 02 01:59:59 CEST 2018
IPC: H02M 5/22
Applicants: EDGE ELECTRONS LIMITED
Inventors: ZAPATA, Jian Carlo Decena
CURRIE, Gordon
STEWART, Neal George
Title: APPARATUS FOR BYPASSING A LOAD CURRENT GOING THROUGH AN AC-AC SERIES VOLTAGE REGULATOR UNDER OVERCURRENT CONDITION
Abstract:
An apparatus is provided for bypassing a load current going through an AC- AC series voltage regulator under overcurrent condition, comprising: an AC-AC invertor; an AC semiconductor bypass switch; and a bypass control. The AC-AC invertor and the AC semiconductor bypass switch are connected in parallel. The bypass control is configured to detect a load current signal, an input voltage of the AC- AC series voltage regulator and an output voltage of the AC-AC series voltage regulator and to control the AC semiconductor bypass switch's switching such that the load current under overcurrent condition is shared between the AC- AC invertor and the AC semiconductor bypass switch.