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Soedibyo Soedibyo
Seminar Nasional Teknologi Informasi Politeknik Negeri Malang
Computer Science & IT Control & Systems Engineering Education

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Journal : SENTIA 2016

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DESAIN PENAIK TEGANGAN MENGGUNAKAN KOMBINASI KY DAN BUCK-BOOST CONVERTER PADA SISTEM PHOTOVOLTAIC Soedibyo Soedibyo; Antonius Rajagukguk
SENTIA 2016 Vol 8, No 2 (2016)
Publisher : SENTIA 2016

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Abstract

today's development, needs the use of renewable energy sources (renewable energy) is increasingly important. Because renewable energy can be used as a source of energy, used to generate the primary generating system and energy source supporting the main plant. One of the renewable energy used for the generation system is the energy of the sun using photovoltaic (PV). When happen the light intensity change, the resulting DC current out put of PV, also fluctuations. Therefore, needed a device of technology capable of raising the voltage if the light intensity decreases, with use DC to DC converters. In this study, designed and implemented the DC to DC converter topologies, hybrid KY and buck-boost converter, that is used to increase the DC voltage generated by the PV. The implementation results show the converter can work at different voltage ranges enter and have a voltage conversion ratio reached 7.16 times with 81.18% efficiency at 90% load power.
DESAIN KENDALI PEMBANGKIT LISTRIK TENAGA MIKRO HIDRO BERBASIS IMPROVED PARTICLE SWARM OPTIMIZATION Soedibyo Soedibyo; Heri Suryoatmojo
SENTIA 2016 Vol 8, No 2 (2016)
Publisher : SENTIA 2016

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Abstract

This paper presents the modeling and control of excitation through the automatic voltage regulator (AVR) and Govenor through automatic generation control (AGC) or frequency load control (FLC) to increase the stability of micro hydro power (MHP). The three main parts of the generation system is a synchronous generator, AVR / excitation and AGC are modeled linearly. Generators are modeled by a single machine, that is connected to the grid (grid) equipped with AVR and, excitation linear model. Control is done by optimizing, the excitation system AVR, gain (KA) and the AGC gain (Ki) using improved methods of particle swam optimization (IPSO). The main objective of the AVR-AGC gain control is to stabilize the oscillation frequency of the MHP are connected to the grid. Simulations carried out with input step function with load fluctuations 5% as a representation of dynamic loads. The simulation results show that the proposed method effectively raises the level of damping electromechanical oscillations in the MHP and minimize attenuation index of comprehensive (comprehensive damping index / CDI).
Co-Authors Abil Huda Alamsyah Achmad Antonius Rajagukguk Dimas Anton Asfani Dwi Ajiatmo Dwi Lastomo Farid Dwi Murdianto Heri Suryoatmojo Hermansyah Hermansyah Hilmansyah Hilmansyah Imam Robandi Machrus Ali Mei Adetya Praja Mochamad Ashari Muhammad Ruswandi Djalal Ontoseno Penangsang Yanwar M.S Yanwar M.S