TY - JOUR N2 - Solar energy has become one of the most potential alternative energies in the world. To convert solar energy into electricity, a photovoltaic (PV) system can be utilized. However, the fluctuation of sunlight intensity throughout the day greatly affects the generated energy in the PV system. A battery may be beneficial to store the generated energy for later use. A DC–DC converter is commonly exploited to produce a constant output voltage during the battery charging process. A Zeta converter is a DC–DC converter which can be used to produce output values above or below the input voltage without changing the polarity. To deal with the inherent non-linearity and time-varying properties of the converter, in this paper the sliding mode control (SMC) is first analyzed and exploited before being integrated with a proportional-integral (PI) control to regulate the output voltage of the PV system. Disturbances are given in the form of changes in input voltage, reference voltage, and load. Voltage deviation and recovery time to reach a steady-state condition of the output voltage after disturbances are investigated and compared to the results using a proportional-integral-differential (PID) controller. The results show that the proposed control design performs faster than the compared PID control method. L1 - http://www.journals.pan.pl/Content/122823/PDF/2726_BPASTS_2022_70_3.pdf L2 - http://www.journals.pan.pl/Content/122823 PY - 2022 IS - 3 EP - e140952 DO - 10.24425/bpasts.2022.140952 KW - photovoltaic KW - Zeta converter KW - sliding mode control KW - PI sliding surface A1 - Hasanah, Rini Nur A1 - Ardhenta, Lunde A1 - Nurwati, Tri A1 - Setyawati, Onny A1 - Sawitri, Dian Retno A1 - Suyono, Hadi A1 - Taufik, Taufik VL - 70 DA - 01.04.2022 T1 - Design of PI sliding mode control for Zeta DC-DC converter in PV system SP - e140952 UR - http://www.journals.pan.pl/dlibra/publication/edition/122823 T2 - Bulletin of the Polish Academy of Sciences Technical Sciences ER -