DocumentCode :
3000696
Title :
A modulation method for capacitor voltage ripple reduction of the switched-capacitor inverter using series/parallel conversion
Author :
Hinago, Youhei ; Koizumi, Hirotaka
Author_Institution :
Tokyo Univ. of Sci., Tokyo, Japan
fYear :
2011
fDate :
14-16 March 2011
Firstpage :
105
Lastpage :
109
Abstract :
A modulation method for capacitor voltage ripple reduction of the switched-capacitor inverter using series/parallel conversion (SCISPC) is proposed. The phase shifted pulse width modulation (PWM) method and the level shifted PWM method are applied to the proposed modulation method. The two capacitors in the 7-level SCISPC is charged alternately by this modulation method. The voltage ripple of these capacitors can be small because the discharging term becomes short. The switching frequency of the proposed modulation method can be reduced. The high efficiency power conversion of the SCISPC is achieved because of the low voltage ripple of the capacitors. The effect of the proposed modulation method is confirmed by the simulation with PSIM and the circuit experiment. The voltage ripple reduction of the capacitors is 33.7% in the simulation result.
Keywords :
PWM invertors; switched capacitor networks; PSIM; capacitor voltage ripple reduction; high efficiency power conversion; level shifted PWM method; low voltage ripple; phase shifted pulse width modulation method; series-parallel conversion; switched-capacitor inverter; switching frequency; Loss measurement; Pulse width modulation; Switches;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industrial Technology (ICIT), 2011 IEEE International Conference on
Conference_Location :
Auburn, AL
ISSN :
Pending
Print_ISBN :
978-1-4244-9064-6
Type :
conf
DOI :
10.1109/ICIT.2011.5754355
Filename :
5754355
Link To Document :
بازگشت