Abb Schweiz Ag

Abb Research Ltd.

Trond Haugen

Jan Wiik

Edgar Jellum

Harald Fretheim

Ole Jacob Soerdalen

Vidar Hegre

A method for estimating a motor parameter in a load commutated inverter arrangement, including the steps of: measuring a motor side ac-voltage; detecting commutation interval information of the measured motor side ac-voltage; estimating a motor parameter based on the detected commutation interval information; and indicating when the estimated motor parameter deviates from a monitoring parameter thereof.

Method for estimating motor parameter in a load commutated inverter arrangement, and a load commutated inverter arrangement therefor

A method and a system for organizing and retrieving energy related information for a plurality of real world objects, wherein a number of information types are defined, each information type representing different kind of energy related information. The method includes providing one or more predefined interfaces adapted for retrieval of information of the information types, providing software objects, representing the real world objects, having at least one interface for retrieval of information of at least one of the types, based on the one or more predefined interfaces, arranging the software objects in a hierarchal structure including more than one level, so that the software objects obtain a parent-child relation, receiving and storing information about where to find the source of the information to be retrieved via the interfaces of the software objects.

Method and system for organizing and retrieving energy information

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Oslo, Norway

Trond Haugen