Digital Design of 12-Phase Cycloconverter Based on DSP with CPLD

Author

Bi, He ; Xiaofeng, Zhang ; Hua, Lin ; Yunbin, Zhou ; Lei, Ma

Author_Institution

Coll. of Electr. & Inf. Eng., Naval Univ. of Eng., Wuhan

fYear

2006

fDate

24-26 May 2006

Firstpage

1

Lastpage

4

Abstract

Recently, analog control is replaced by digital control in cycloconverter-fed adjustable speed drives. However, cycloconverter has many thyristors and control signals. Multi-CPU has to be adopted for its complexity. In this paper, main circuit is redesigned due to multi-phase. An interstar winding method is used in insulating transformers to supply 12-phase power. A 12-phase cycloconverter based on DSP with CPLD is proposed. The inner structure of CPLD is designed especially to generate heavy firing pulses composed of control signal distributor, counting time delay and pulses widening, and pulses distribution parts. Simulation and experiment results denote that a digital cycloconverter based on DSP with CPLD has the convenience of design and debugging, and has preferable control performance and high reliability

Keywords

cycloconvertors; delays; digital signal processing chips; power engineering computing; power transformer insulation; programmable logic devices; transformer windings; variable speed drives; 12-phase cycloconverter digital design; CPLD; DSP; analog control; control signal distributor; cycloconverter-fed adjustable speed drives; firing pulses; insulating transformers; interstar winding method; thyristors; time delay; Circuits; Digital control; Digital signal processing; Power supplies; Power transformer insulation; Pulse generation; Pulse transformers; Signal design; Thyristors; Variable speed drives;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications, 2006 1ST IEEE Conference on

Conference_Location

Singapore

Print_ISBN

0-7803-9513-1

Electronic_ISBN

0-7803-9514-X

Type

conf

DOI

10.1109/ICIEA.2006.257092

Filename

4025709