Title :
Soft-switched hybrid modulation scheme for pulsating-Dc-link converters
Author :
Rahnamaee, Arash ; Mazumder, Sudip K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Illinois at Chicago, Chicago, IL, USA
Abstract :
A soft-switched modulation scheme is outlined for a high-frequency capacitor-less pulsating-dc-link inverter to mitigate switching loss of an ac/ac converter of the inverter. A front-end dc/pulsating-dc converter followed by an ac/dc converter encodes two streams of information on a pulsating-dc link using pulse placement to provide soft switching condition for the ac/ac converter. The soft-switching scheme is based on modulation using no auxiliary circuit. The soft-switching operation of the ac/ac converter is verified using a prototype 1kW, 72 V/208 V inverter.
Keywords :
AC-AC power convertors; invertors; switching convertors; zero current switching; zero voltage switching; ac/ac converter; capacitor-less pulsating-dc-link inverter; front-end dc/pulsating-dc converter; high-frequency pulsating-dc-link inverter; power 1 kW; pulse placement; soft-switched hybrid modulation; switching loss mitigation; voltage 208 V; voltage 72 V; Bridge circuits; Frequency conversion; Frequency modulation; Inverters; Legged locomotion; Switches;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2012 IEEE
Conference_Location :
Raleigh, NC
Print_ISBN :
978-1-4673-0802-1
Electronic_ISBN :
978-1-4673-0801-4
DOI :
10.1109/ECCE.2012.6342373
