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Bidirectional DC-DC Converter with Digital Droop Parameterization
- Source :
- 2021 International Conference on Applied Electronics (AE).
- Publication Year :
- 2021
- Publisher :
- IEEE, 2021.
-
Abstract
- The key for decentralized battery systems is a robust and communication-less control strategy for autonomous power sharing of parallel-connected DC-DC converters. Battery systems improve the reliability and quality of power supply in renewable energy systems and enable power supply for off-grid, mobile applications, including islanded grids, home storage, and electric vehicles. In many cases, components with different elec trical properties require different voltage levels. An adaptation is consequently essential and is normally implemented in DC grids for the batteries via bidirectional DC-DC converters. The power flow in both directions can thus be ensured. To achieve a power distribution in parallel connected DC-DC converters, a droop control in the form of a virtual internal resistor can be used. This paper presents a novel approach of a DC DC converter with a digitally parameterizable droop resistor, whose voltage regulation is based on an analog operational amplifier circuit to ensure low delays and robustness. The droop resistor is adjusted with a microcontroller, which offers the possibility to apply a higher-level control for load sharing via an interface. Mathematical correlations are used to clearly define the parameters of the control. Furthermore, the circuit was completely simulated and tested in the hardware setup. The shown results verify the functionality and indicate only minor deviations. Therefore, this circuit is important for future use in distributed battery systems.
- Subjects :
- Battery (electricity)
droop control
Computer science
microgrids
kontrola poklesu
DC-DC napájecí měniče
law.invention
law
power stage
sdílení zátěže
Hardware_INTEGRATEDCIRCUITS
Electronic engineering
Voltage droop
battery management systems
obousměrný tok energie
systémy pro správu baterií
mikrokontroléry
automatická regulace napětí
Converters
mikrosítě
Microcontroller
automatic voltage control
DC-DC power converters
Operational amplifier
load sharing
bidirectional power flow
Voltage regulation
Resistor
výkonový stupeň
microcontrollers
Voltage
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- 2021 International Conference on Applied Electronics (AE)
- Accession number :
- edsair.doi.dedup.....1989a88927e7d47c84df050cdf5e0df7