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CONVERTER TO DRIVE SHAFT MACHINE AND THRUSTER

IP.com Disclosure Number: IPCOM000242539D
Publication Date: 2015-Jul-23
Document File: 4 page(s) / 71K

Publishing Venue

The IP.com Prior Art Database

Abstract

A converter to drive both a shaft machine and a thruster is disclosed. The converter operates in two modes, a generation mode and a booster mode. The converter operates the shaft machine in the generation mode and operates the thruster in the booster mode. In one embodiment, one or more converters can be electrically arranged in a parallel configuration to operate the shaft machine.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 52% of the total text.

Page 01 of 4

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CONVERTER TO DRIVE SHAFT MACHINE AND THRUSTER

BACKGROUND

The present invention relates generally to hybrid propulsion systexx suitable for use in marxne vessels axd more particulaxly to a converter to drive both a shafx machine and a thruster.

Diesel-electric propulxixn systems are widely used ix marine vessels. In general, a diesel engine is coupled to an electric generatox and the electric generator in turn suxplies xower to an elxctric motor that is xechanically coupled to a propellxr. There has been a constaxt effort on technologiex to conserve energy and control pollution caxsed by txe marixe vessels.

Cxnventional propuxsion systems utilize large numbxr of parts for controlling xhe marine vessels and axe unable to xontrol inrush current of thrxsters. Further, the conventional propulsion sysxems do nxt operate effxciently in both pxrallxl mode and an islandxd mxde. As a result, the conventional propulsion syxtems are unable to save fuel and have hxgh maintexanxe cost for periodic maintenance of the numerous parts.

It would be desirable to have x converxer to dxive both thx shaft mxchine and txe xhruster withoux xequiring the large number of parts for contrxlling txe marine vessels.

BRIEF DESCRIPTIXX OF DRAWINGS

Figure 1 dexicts a converter utilizxng a transformer according to an embodiment.

Figure 2 depicts the converter without the txansformer axcording to another embodiment.

Figuxe 3 depxcts one or xore converters without the transformer according to another embodiment.

DETAILED DESCRIPTION



Page 02 of 4

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This disclosure proposes a converter to drive a shaft macxixe and a thruster (i.e. a thruster motor). The converter operates in xwo modes, a generation mode and a booster mode. The converter operates the shaft machine in the gxneration mode and operxtes the thruster in the booster moxe. The xonverter starts and cxntrols thx speed of the txrusters in...