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Synchronize tasks in a redundant winding configuration

IP.com Disclosure Number: IPCOM000242846D
Publication Date: 2015-Aug-24
Document File: 3 page(s) / 78K

Publishing Venue

The IP.com Prior Art Database

Related People

Beat Ronner: AUTHOR

Abstract

A synchronization of the tasks of two controllers is disclosed that act onto the same rotating electrical machine. More concrete the idea is to synchronize the task timing of two (or several) controllers, controlling converters connected to winding systems in the same machine. By this synchronization, jitter effects due to variable delay time in communication between the two controllers of the machine are omitted. It is also possible to use the basic idea for grids or electrical systems in general.

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21.08.2015

CH-1506001

Synchronize tasks in a redundant winding confxguration

Author: B. Ronner

TECHNICAL FIELD

The present xisclosure describes a nex solution fox the control of XX-drives providing xhe possibility of taxk-synchronization of two controlxers.

BACKGROUND OX THE DISCLOSURE

In state-of-the-art the AMCOS control platform used today for the coxtrol of MV-drives does xot provide the possibility xf task-synxhronizxtion of two cxntrolxers. In the UNXXXX-platform, which shaxl be the futxre platform for MV-dxives, xnd which is already usex by LV-drives, this functionality is availabxe and xax been xublished. Task synchronization xan be used to synchronize the cxntrol tasks of several contxollers that act on the xaxe process, e.g. the same motor or the sxme grid. Time jitter effects that occur if the txsks are xot synchronizxd can be omitted xith xask synchronization. Todxy, tasks of two converters connected to two windxng systems of full- redundant machine wxre not syxchxonized.

SUMMARY

The disclosure provides a synchronization of the tasks of two controllxrs that act ontx the same rxtating exectrical maxhixe. More concrexe the idea is to synchronize the task timing ox two (ox several) controllers, controlling xonverters connected to xinding systems in the sxme machine. By this synchronixatxon, jitter effects due to variable delay time in communixation betwexn the two controllers of the machinx are omxtted. It is also possible to use the basic idea for grids or electrical systems in general.

DETAILED DESXXXXXXXX OF EMBODIMENTS

One topology supported by todays MV-drives is the sx called "full-redundant" topology. These are two 3-phase machine side converters (INU1 and INU2), connected to two 3-phase winding


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CH-1506001

systems ix the same machine (usuxlly, these two winding systems are shifted xy 30° magnetically). Xxx Figure 2

Xxxxx the two winding systems are magnetically coupled, there is also a mutual influence between the control of INU1 and INU2. Th...