DocumentCode :
742981
Title :
Analysis and PWM Control of Switched Boost Inverter
Author :
Ravindranath, A. ; Mishra, Sonu K. ; Joshi, Akanksha
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol. Kanpur, Kanpur, India
Volume :
60
Issue :
12
fYear :
2013
Firstpage :
5593
Lastpage :
5602
Abstract :
The Z-source inverter (ZSI) employs an LC impedance network between the main inverter bridge and the power source. The unique feature of the ZSI is that it can operate either in buck or boost mode with a wide range of obtainable output voltages from a given input voltage. This topology also exhibits better electromagnetic-interference noise immunity when compared to a traditional voltage-source inverter (VSI). However, the LC impedance network of ZSI significantly increases the size and cost of the power converter and can make it unsuitable for low-power applications. This paper proposes a novel topology called switched boost inverter (SBI) which exhibits similar advantages of ZSI with lower number of passive components and more active components compared to ZSI. The steady-state and small-signal analyses of SBI, along with its pulsewidth modulation (PWM) control strategies, have been discussed in this paper. This paper also presents a comparison of SBI and ZSI with the same input and output parameters. The theoretical analysis given in this paper has been validated using a laboratory prototype of SBI, and the experimental results are presented for verification. The experimental harmonic spectrum of the inverter´s output voltage with the proposed PWM technique is also plotted and compared with that of a traditional VSI. All the experimental results show good correlation between theory and experiments.
Keywords :
PWM power convertors; electromagnetic interference; voltage control; LC impedance network; PWM control strategy; SBI; VSI; Z-source inverter; ZSI; active components; boost mode; buck mode; electromagnetic-interference noise immunity; experimental harmonic spectrum; inverter bridge; inverter output voltage control; passive components; power converter; power source; pulsewidth modulation control strategy; small-signal analysis; steady-state anlaysis; switched boost inverter analysis; voltage-source inverter; Bridge circuits; Capacitors; Inductors; Inverters; Pulse width modulation; Switches; Harmonic analysis; pulsewidth modulation (PWM); small-signal analysis; switched boost inverter (SBI);
fLanguage :
English
Journal_Title :
Industrial Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0278-0046
Type :
jour
DOI :
10.1109/TIE.2012.2230595
Filename :
6365307
Link To Document :
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