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1. (WO2018046895) ELECTRICAL ENERGY CONVERSION

Pub. No.:    WO/2018/046895    International Application No.:    PCT/GB2017/052546
Publication Date: Fri Mar 16 00:59:59 CET 2018 International Filing Date: Sat Sep 02 01:59:59 CEST 2017
IPC: H02M 3/155
H02M 3/156
H02M 3/06
H02J 7/34
Applicants: TRAMETO LIMITED
Inventors: TRAVIS, Christopher
STRONG, Laurence
DAVIES, David
Title: ELECTRICAL ENERGY CONVERSION
Abstract:
A switching circuit, electrical energy converter, power management unit and energy harvesting system are described. Such apparatus is applicable to energy harvesting applications which involve a variety of transducers, either singly or simultaneously. The transducers may, for example, be photovoltaic, thermoelectric, piezoelectric, or electrodynamic. The described converters operate to convert impedances, voltages and currents. They incorporate inductive energy transfer elements, which are magnetically coupled. Different combinations of these energy transfer elements are used to obtain different conversion ratios, which can be referred to as "gears". On the input side, having multiple gears enables easier and better matching to a wider variety of energy transducers. On the output side, it enables easier and better accommodation of a wider spread of energy storage voltages and of a wider variety of loads. Benefits include greater deployment flexibility, lower inventory cost, higher energy extraction, and higher conversion efficiency.