Title :
A practical approach to randomised pulse-width modulation
Author :
Valchev, Vencislav C. ; Kovachev, Dimitar M. ; Van den Bossche, Alex P.
Author_Institution :
Dept. of Electron., Tech. Univ. of Varna, Bulgaria
Abstract :
When a switched-mode power device has to use a random pulse-width modulation (RPWM) but no digital signal processing is necessary it is possible to control the pulse turn-on position by instantly generated (pseudo) random sequence. With the help of simulation the impact of such sequences on the spectrum harmonics has been investigated and conclusions have been made. A program for automated hardware realization of such sequences has been suggested and used for the purpose of simulation. Generated descriptions are in electronic device interchange format (EDIF) and can be converted in circuits for use in field-programmable gate arrays (FPGA).
Keywords :
PWM power convertors; field programmable gate arrays; power engineering computing; switched mode power supplies; FPGA; automated hardware program; electronic device interchange format; field-programmable gate arrays; pseudorandom sequence; pulse turn-on position control; random pulse-width modulation; spectrum harmonics; switched-mode power device; Automatic generation control; Digital modulation; Digital signal processing; Field programmable gate arrays; Power generation; Pulse generation; Pulse modulation; Random sequences; Signal generators; Space vector pulse width modulation;
Conference_Titel :
Industrial Electronics Society, 2005. IECON 2005. 31st Annual Conference of IEEE
Print_ISBN :
0-7803-9252-3
DOI :
10.1109/IECON.2005.1568958
