A simple indirect voltage sensing method for line-connected inverters

Author

Becker, Frank ; Scherer, Alexander ; Weigold, Joerg ; Braun, Michael

Author_Institution

Elektrotechnisches Inst. Univ., Karlsruhe

fYear

2007

fDate

2-5 Sept. 2007

Firstpage

1

Lastpage

7

Abstract

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.

Keywords

invertors; machine control; microcontrollers; variable speed drives; braking energy; converter control; cooling effort; electrical drive; indirect voltage sensing method; inverter-fed drives; line voltage; line-connected inverters; low power applications; microcontroller system; pulsed power converter; self-commutated line side converters; self-sensing control; sensorless control; variable speed drive applications; voltage source converter; Current measurement; Electric variables control; Feeds; Hardware; Inductors; Pulse measurements; Pulse width modulation; Pulse width modulation inverters; Sensorless control; Voltage control; Converter control; Electrical drive; Measurement; Pulsed Power Converter; Self-sensing control; Sensorless control; Voltage Source Converters;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications, 2007 European Conference on

Conference_Location

Aalborg

Print_ISBN

978-92-75815-10-8

Electronic_ISBN

978-92-75815-10-8

Type

conf

DOI

10.1109/EPE.2007.4417462

Filename

4417462