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A simple indirect voltage sensing method for line-connected inverters

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4 Author(s)
Becker, F. ; Elektrotechnisches Inst. Univ., Karlsruhe ; Scherer, A. ; Weigold, Joerg ; Braun, M.

Inverter-fed drives will be used more and more frequently for variable speed drive applications with high dynamics. For saving braking energy and reduction of cooling effort it is useful to deploy self-commutated line side converters even in low power applications. The method proposed in this paper allows to synchronise the converter to the grid without sensing the line voltage. Hence additional hardware for voltage sensing is not necessary. Furthermore the implementation of this method on a microcontroller system is presented.

Published in:

Power Electronics and Applications, 2007 European Conference on

Date of Conference:

2-5 Sept. 2007

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