Control of Zeta Converter and Hybrid Energy Storage System (HESS) using Small Signal Analysis with State Feedback

Renewable energy system at a low power level is of utmost significance since the area of the distributed power system is growing rapidly. DC-DC converters which can step up and step down voltage levels are extensively researched for the control and regulation of power and voltage of these types of s...

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Bibliographic Details
Published in2021 6th International Conference for Convergence in Technology (I2CT) pp. 1 - 6
Main Authors K, Ajeya, SMIEE, Vinatha. U.
Format Conference Proceeding
LanguageEnglish
Published IEEE 02.04.2021
Subjects
Aerospace electronics
Analytical models
DC-DC power converters
Regulation
State feedback
Steady-state
Voltage control
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Summary:Renewable energy system at a low power level is of utmost significance since the area of the distributed power system is growing rapidly. DC-DC converters which can step up and step down voltage levels are extensively researched for the control and regulation of power and voltage of these types of system. Zeta converter, one of the promising DC-DC converter topology has advantages of low ripple output current over the conventional buck-boost converters and hence is considered in this paper. Zeta converter can operate in both excessive and deficit power modes while providing better load voltage regulation. This makes it a good candidate for PV based applications whose output power is intermittent in nature. Hybrid Energy Storage System (HESS) are increasingly becoming popular as energy storage devices since it inherits the quality of reducing fast and slow transients. Integration of zeta converter and such an energy storage system will provide optimal power transfer between the load and storage along with the load side regulation. State Space averaging technique is one of the modeling approach where in the parasitic resistances can be included so that the small signal behavior is captured and analyzed. For the control of small signal response, state feedback is implemented so that the optimal current flows in the energy storage system along with the HESS component voltage compensation. In the work presented in this paper, state space modeling is used to analyze the converter properties and feedback is appropriately ensued such that there is a seamless transfer of power to the load and HESS while keeping the steady state voltage error at the minimum.
DOI:10.1109/I2CT51068.2021.9417945