TITLE:
Output Voltage Stabilization of Non-Ideal DC-DC Zeta Converter with Output Voltage Error Elimination via Hybrid Control
AUTHORS:
Hafez Sarkawi, Noridah Mohd Ridzuan, Muhammad Idzdihar Idris, Mohd Syafiq Mispan
KEYWORDS:
Continuous Conduction Mode, DC-DC Zeta Converter, Hybrid Control, Output Voltage Error, Switching Control Law, Switching Frequency
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.13 No.1,
January
26,
2025
ABSTRACT: In this paper, we proposed an output voltage stabilization of a DC-DC Zeta converter using hybrid control. We modeled the Zeta converter under continuous conduction mode operation. We derived a switching control law that brings the output voltage to the desired level. Due to infinite switching occurring at the desired level, we enhanced the switching control law by allowing a sizeable output voltage ripple. We derived mathematical models that allow one to choose the desired switching frequency. In practice, the existence of the non-ideal properties of the Zeta converter results in steady-state output voltage error. By analyzing the power loss in the zeta converter, we proposed an improved switching control law that eliminates the steady-state output voltage error. The effectiveness of the proposed method is illustrated with simulation results.