Patent ID: 8958181
Filing Date: 2015-02-17
Classification: H02M,H02P

Abstract:
1. An electrical system for starting at least one engine, the system comprising: an AC/DC rectifier powered by an AC power network to deliver a first DC voltage V a DC/AC converter module for delivering a starting AC voltage to said at least one engine from said AC power network or from a battery when the AC power network is unavailable, wherein said DC/AC converter module comprises k n-phase bidirectional inverters arranged in parallel (k>1), each delivering power that is no greater than half a maximum power P wherein the n outputs from at least one of said n-phase bidirectional inverters deliver said starting AC voltage for said at least one engine via n respective series inductors of said DC/AC converter module when the AC power network is available or, when the AC power network is unavailable, via said battery connected to n outputs of a remaining one of said n-phase bidirectional inverters via n associated series inductors to form a DC/DC boost converter, the electronic protection device of which is connected to n inputs of said at least one of said n-phase bidirectional inverters delivering said starting AC voltage via n associated series inductors.