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All Journal Journal of Multidisciplinary Academic Indonesian Journal of Electrical Engineering and Computer Science
Akhyar Akhyar
Politeknik Negeri Lhokseumawe
Education Engineering Social Sciences

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Direct-DC Power System Generation Based on Single-Phase Rooftop Photovoltaic in Residential Low Voltage Feeder Siti Amra; Nelly Safitri; Akhyar Akhyar; Usmardi Usmardi
Journal of Multidisciplinary Academic Vol 1, No 1 (2017): Science, Engineering and Social Science Series
Publisher : Penerbit Kemala Indonesia

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Abstract

The trend of converting direct current (DC) system into alternating current (AC) using inverter becomes common since the system efficiency appropriately improves. Additionally, the mitigation on direct-DC power system requires transformer and inverters inside the appliances due to lower and convert the 230VAC into useable DC voltage. This paper proposes the direct-DC power system generation based on single-phase rooftop photovoltaic (PV) in the residential low voltage (LV) feeder. The proposed simulation designates the power system components included in the modeling of the AC and direct-DC houses, which the included power system components downstream of the PV array. The efficiency of direct-DC power supply, grid interactive inverter and charge controller are simulated. The results show that the peak curve efficiency of direct-DC power supply has DC power input narrow to 400VDC. It is then become 2% higher than 220VAC power input. While the inverter with multiple MPPT efficiency curve has the peak of 96-97% after 30% loads, while when it is partly loads, with the power capacity below 1000W, has peak at range of 86-95%. Then the efficiency curve of charge controller with MPPT for partly load scheme below 30W output power the peak is about 90-94%.
Smart panel design for renewable energy generation Rudi Syahputra; Nelly Safitri; Fauzan Fauzan; Yassir Yassir; Teuku Hasannuddin; Akhyar Akhyar; Radhiah Radhiah; Zulfikar Zulfikar
Indonesian Journal of Electrical Engineering and Computer Science Vol 43, No 1: July 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v43.i1.pp18-27

Abstract

The aim of this study is to design and develop a smart panel module specifically for solar power generation, which includes three critical functions: the automatic transfer switch (ATS), the automatic main failure (AMF), and capabilities for remote monitoring and control. The ATS and AMF features employ Haiwell AT12MOT Ethernet PLC control equipment in conjunction with the Haiwell B7H Ethernet IoT cloud HMI, both designed for remote operation through an IoT system and integrated with the Haiwell cloud application. The developed PLC program interacts with HMI software that is created using NB designer. Inputs from the PLC are monitored and managed via the Haiwell cloud application, which connects with the relay designated as input for the Haiwell AT12MOT PLC. The resulting design interfaces with the PLC output located within an electrical panel specifically designed to handle industrial loads. This research results in a smart panel capable of operating in an industrial context with a power capacity of 2,200 VA. It is noteworthy that during automatic operations, load transfers between solar power systems and PLN (the national grid company of Indonesia) do not occur instantaneously; instead, there is a delay of 10 seconds as the system stabilizes back to normal conditions.
Co-Authors Fauzan Fauzan Nelly Safitri Radhiah Radhiah Rudi Syahputra Siti Amra Teuku Hasannuddin Usmardi Usmardi Yassir Yassir Zulfikar Zulfikar