scholarly journals Cascaded H-Bridge Multilevel Converter for a High-Power Medium-Voltage Impedance-Admittance Measurement Unit

Author(s):  
Marko Petkovic ◽  
Nicolai Hildebrandt ◽  
Francisco D. Freijedo ◽  
Drazen Dujic
2019 ◽  
Vol 28 (04) ◽  
pp. 1950064 ◽  
Author(s):  
S. A. Ahamed Ibrahim ◽  
P. Anbalagan ◽  
M. A. Jagabar Sathik

In this paper, a new asymmetric switched diode (ASD) multilevel inverter is presented for medium-voltage and high-power applications. The proposed converter consists of series connection basic unit with full-bridge inverter. In addition to this, a cascaded switched diode (CSD) structure is recommended to generate the higher number of voltage levels. Seven different algorithms are presented to determine the magnitudes of DC sources in CSD topology. To prove the advantages of proposed multilevel converter over recent multilevel converters in terms of blocking voltage, numbers of IGBTs and on-state switches are presented. To show the authority of the proposed multilevel inverter, it is simulated using MATLAB/Simulink and is experimentally tested using prototype model for 13-level inverter. Finally, various output voltage and current waveforms are shown to prove the dynamic behavior of proposed inverter.


2019 ◽  
Vol 22 (2) ◽  
pp. 105
Author(s):  
Marko Petkovic ◽  
Nicolai Hildebrandt ◽  
Francisco D. Freijedo ◽  
Drazen Dujic

Recent trends in power system design such as an increasing share of renewable energy sources and smart grids are creating different subsystem interactions that require proper investigation, understanding, describing and estimating global system stability through impedance-admittance measurement and identification. This paper proposes and presents the cascaded H-bridge multilevel inverter topology for perturbation injection converter and impedance-admittance measurement. The methodology of impedance-admittance measurement is explained together with different measurements requirements. Performance and suitability of this topology for impedance-admittance measurement is evaluated through simulations. Preliminary design principles are given for the converter. System level feasibility of the solution is proposed as a main result of the work.


Author(s):  
Hector Fernandez-Rebolleda ◽  
Alain Sanchez-Ruiz ◽  
Salvador Ceballos ◽  
Angel Perez-Basante ◽  
Juan Jose Valera Garcia ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document