An Oversampled Hysteresis Modulation for Shaping the Output Impedance of Droop-Controlled Boost Converters in DC Microgrids

Author(s):  
Hossein Abedini ◽  
Paolo Mattavelli
Author(s):  
Michele Cucuzzella ◽  
Riccardo Lazzari ◽  
Yu Kawano ◽  
Krishna C. Kosaraju ◽  
Jacquelien M. A. Scherpen

Author(s):  
Michele Cucuzzella ◽  
Riccardo Lazzari ◽  
Sebastian Trip ◽  
Carlo Sandroni ◽  
Antonella Ferrara

2020 ◽  
Vol 11 (4) ◽  
pp. 2940-2949 ◽  
Author(s):  
Shivam Chaturvedi ◽  
Deepak Fulwani ◽  
Josep M. Guerrero

2020 ◽  
Vol 1 (1) ◽  
pp. 49-58
Author(s):  
Jhon Jairo Herrera-Pérez ◽  
Alejandro Garcés-Ruiz

This paper presents a non-linear method based on sum-of-squares (SOS), to determine the stability of equilibrium points for the Buck, Boost, Buck-Boost and non-inverter Buck-Boost converters. These converters share a similar structure with a PI controller to regulate the output voltage. A quadratic Lyapunov function is proposed in all cases, and the conditions for stability are evaluated using convex optimization based on SOS models. The methodology is useful for academic purposes but also in practical applications like DC microgrids. Simulation results shows the advantages of the proposed method.


Author(s):  
Daniel O'Keeffe ◽  
Stefano Riverso ◽  
Laura Albiol-Tendillo ◽  
Gordon Lightbodyt

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3131
Author(s):  
Daniel L. Gerber ◽  
Fariborz Musavi ◽  
Omkar A. Ghatpande ◽  
Stephen M. Frank ◽  
Jason Poon ◽  
...  

DC microgrids have become a prevalent topic in research in part due to the expected superior efficiency of DC/DC converters compared to their AC/DC counterparts. Although numerous side-by-side analyses have quantified the efficiency benefits of DC power distribution, these studies all modeled converter loss based on product data that varied in component quality and operating voltage. To establish a fair efficiency comparison, this work derives a formulaic loss model of a DC/DC and an AC/DC PFC boost converter. These converters are modeled with identical components and an equivalent input and output voltage. Simulated designs with real components show AC/DC boost converters between 100 W to 500 W having up to 2.5 times more loss than DC/DC boost converters. Although boost converters represent a fraction of electronics in buildings, these loss models can eventually work toward establishing a comprehensive model-based full-building analysis.


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