Design and experimental evaluation of the loss-free braking resistor concept for applications in integrated converter machine systems

Author

Kolar, Johann W. ; Ertl, Hans ; Zach, Franz C.

Author_Institution

Tech. Univ. Wien, Austria

Volume

2

fYear

1998

fDate

31 Aug-4 Sep 1998

Firstpage

626

Abstract

If the braking resistor of a conventional dissipative braking system (braking chopper) of a three-phase AC motor drive is replaced by a thyristor bridge (loss-free braking resistor) controlled in the full inverter operation, the braking energy of the drive can be fed back into the mains. This means that the current flowing into the mains via always two phases from the DC link is controlled by the power transistor of the braking chopper. In this paper, this regenerative braking system is discussed based on a 10 kW laboratory model

Keywords

AC motor drives; DC-AC power convertors; bridge circuits; invertors; regenerative braking; resistors; thyristor convertors; 10 kW; applications; full inverter operation; integrated power converter-machine systems; loss-free braking resistor concept; power transistor; regenerative braking system; thyristor bridge; AC motors; Bridges; Choppers; Control systems; Drives; Inverters; Laboratories; Power transistors; Resistors; Thyristors;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 1998. IECON '98. Proceedings of the 24th Annual Conference of the IEEE

Conference_Location

Aachen

Print_ISBN

0-7803-4503-7

Type

conf

DOI

10.1109/IECON.1998.724165

Filename

724165