Paper Info
Title
Minimization of Switched Capacitor Voltage Ripple in a Multilevel Dodecagonal Voltage Space Vector Structure for Drives
Abstract
A multilevel dodecagonal voltage space vector generation scheme for variable-speed drive applications with single-dc-link operation requires a large value of capacitance for cascaded H-bridge (CHB) filters, when operated at lower speeds. In existing schemes, the multilevel dodecagonal structure is obtained by cascading a flying capacitor inverter with a CHB. In this paper, a new scheme has been proposed to minimize the capacitance requirement for full speed operation by creating vector redundancies using modular and equal voltage CHBs. Also, an algorithm has been developed to optimize the selection of vector redundancies among the CHBs in order to minimize the voltage ripple of the floating capacitors. The proposed algorithm considers instantaneous capacitor voltages and phase currents for optimal selection of vector redundancies. A mathematical model for capacitor voltage deviation is presented, and the effectiveness of the proposed algorithm is verified in both the simulation and the experiment.
Year
DOI
Venue
2020
10.1109/tie.2019.2893825
IEEE Transactions on Industrial Electronics
Keywords
Field
DocType
Capacitors,Inverters,Switches,Harmonic analysis,Redundancy,Minimization,Mathematical model
Inverter,Capacitor,Capacitance,Control theory,Voltage,Switched capacitor,Harmonic analysis,Redundancy (engineering),Engineering,Ripple
Journal
Volume
Issue
ISSN
67
1
0278-0046
Citations 
PageRank 
References 
1
0.36
0
Authors
6
Name
Order
Citations
PageRank
Mohammed Imthias110.70
Krishna Raj R230.82
Apurv Kumar Yadav311.38
K. Gopakumar463574.23
Umanand Loganathan542.23
Carlo Cecati686960.96