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1. (WO2018204134) HYSTERESIS-CONTROLLED DC-DC BOOST CONVERTER FOR AERIAL VEHICLES

Pub. No.:    WO/2018/204134    International Application No.:    PCT/US2018/029228
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Wed Apr 25 01:59:59 CEST 2018
IPC: H02P 7/29
H02P 7/291
H02P 31/00
H02M 3/155
H02M 3/156
B64C 39/02
B64C 29/00
Applicants: AMAZON TECHNOLOGIES, INC.
Inventors: TRAUBE, Joshua White
Title: HYSTERESIS-CONTROLLED DC-DC BOOST CONVERTER FOR AERIAL VEHICLES
Abstract:
A power conversion unit may include two or more power modules for providing high- voltage direct current power to electrical loads, such as one or more propulsion motors aboard an aerial vehicle. Each of the power modules may be controlled by hysteresis, and may include one or more pairs of transistors that are switched by a gate driver with respect to differences between a reference current and a sensed current passing through a boost inductor. The number, size and shape of the power modules may be selected to accommodate the electrical loads, and may be switched on or off, as necessary. The power conversion unit may feature at least one more power module than is required to meet all anticipated electrical loads, thereby ensuring that the power conversion unit may continue to provide power even in the event that one of the power modules experiences a fault of any kind.