Analysis and control of a cellular converter system with stochastic ripple cancellation and minimal magnetics

Author(s)
Perreault, David J.; Kassakian, John G.
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Abstract
A parallel converter architecture based on the resonant pole inverter (RPI) topology is presented. It is shown that this architecture minimizes the output magnetics required for current sharing. A new current control scheme is introduced which reduces peak currents, losses, and output voltage ripple for many operating conditions. This new control method is applicable to both the single RPI and the parallel architecture. Additionally, the paper analytically quantifies the degree of passive ripple cancellation between cells of a parallel architecture. It is shown that the RMS ripple current of an N cell paralleled converter system is a factor of 1√(N) lower than for an equivalent single converter. These results are verified using a piecewise-linear model. We conclude that the parallel architecture overcomes some of the major disadvantages of the conventional RPI.
Date issued
1997-01
URI
http://hdl.handle.net/1721.1/86915
Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Laboratory for Electromagnetic and Electronic Systems
Journal
IEEE Transactions on Power Electronics
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Perreault, D.J., and J.G. Kassakian. “Analysis and Control of a Cellular Converter System with Stochastic Ripple Cancellation and Minimal Magnetics.” IEEE Trans. Power Electron. 12, no. 1 (1997): 145–152.
Version: Final published version
Other identifiers
INSPEC Accession Number:5487680
ISSN
08858993
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