The paper presents power quality enhancement on low voltage of three phase grid caused by PV generator integration under variabel solar irradiance level on constant temperature and load. MPPT Fuzzy helps to generate duty cycle to control DC/DC boost converter of PV generators. This model was expected to improve power quality due to unbalance voltage and current, low voltage and current harmonics, and low input power factor. There were eigth scenarios PV generator connected to three phase grid using MPPT Fuzzy and compared with MPPT P and O. The research results that application of two methods on different irradiance and PV generator integration level produces unbalanced voltage value stable at 0%. At the same conditions, the use of MPPT Fuzzy results unbalanced current was greater than MPPT P and O. On solar irradiance level fixed, the greater number of PV generator connected to three-phase grid, then value of average voltage and current harmonics (THD) will increases. At the level of solar radiation increases, average grid voltage and current THD also have increased. The average grid voltage and current THD was reduced after using MPPT Fuzzy. The application of MPPT Fuzzy was able to enhance profile of grid voltage and current THD due to integration of a number of PV generator to three phase grid corresponding with IEEE Standard 519-1992. MPPT Fuzzy was capable to improve input power factor better than MPPT P and O.

This paper presents performance analysis of Unified Power Quality Conditioner-Battery Energy Storage (UPQC-BES) system supplied by Photovoltaic (PV)-Wind Hybrid connected to three phase three wire (3P3W) of 380 volt (L-L) and 50 hertz distribution system. The performance of supply system is compared with two renewable energy (RE) sources i.e. PV and Wind, respectively. Fuzzy Logic Controller (FLC) is implemented to maintain DC voltage across the capacitor under disturbance scenarios of source and load as well as to compare the results with Proportional Intergral (PI) controller. There are six scenarios of disturbance i.e. (1) non-linear load (NL), (2) unbalance and nonlinear load (Unba-NL), (3) distortion supply and non-linear load (Dis-NL), (4) sag and non-linear load (Sag-NL), (5) swell and non-linear load (Swell-NL), and (6) interruption and non-linear load (Inter-NL). In disturbance scenario 1 to 5, implementation of FLC on UPQC-BES system supplied by three RE sources is able to obtain average THD of load voltage/source current slightly better than PI. Furthermore under scenario 6, FLC applied on UPQC-BES system supplied by three RE sources gives significantly better result of average THD of load voltage/source current than PI. This research is simulated using Matlab/Simulink.

This paper presents enhancement of load active power transfer using Unified Power Quality Conditioner-Photovoltaic-Battery Energy Storage (UPQC-PV-BES) system. This system is connected to a three phase three wire (3P3W) system with a voltage of 380 V (line to line) and 50 hertz. The proposed model is also compared with UPQC and UPQC-PV respectively. The parameters investigated are load voltage, load current, load active power, and efficiency. BES functions to save excess energy generated by PV, distribute it to the load, avoid interruption voltage, and regulate the charging process and energy utilization. The fuzzy logic controller (FLC) is proposed and compared with proportional integral (PI) method to control DC voltage variable and input DC reference voltage, to produce a reference current source on hysteresis current controller on shunt active filter in 12 disturbance scenarios (scns). In Scenario (Scn) 1 to 5, the 3P3W system uses three combinations of UPQC with PI controller and FLC, still keeps load voltage and load current above 300 V and 8 A. Whereas in Scn 6, only the UPQC-PV-BES with FLC is able to maintain load voltage and load current higher compared to UPQC and UPQC-PV combinations as 304.1 V and 8.421 A, respectively. In Scn 1 to 5, the 3P3W system uses three combinations of UPQC with PI controller and FLC, capable of producing load active power above 3600 W. Whereas in Scn 6, only a combination of UPQC-PV-BES with PI controller and FLC is able to produce a load voltage of 3720 W and 3700 W, respectively. In Scn 1 to 6, UPQC-PV-BES results in lower efficiency compared to using UPQC and UPQC-PV. However, in Scn 6, UPQC-PV-BES with FLC is able to produce load voltage, load current, and load active power higher than UPQC-PV and UPQC. Thus, the UPQC-PV-BES model using FLC is able to compensate load voltage and load current, as well as to enhance load active power, especially for an interruption on source bus. This research is simulated using Matlab/Simulink.

Objective of research is to analyze the influence of solar irradiance and integration of photovoltaic (PV)

The research was exploration ofpartial COI gene of moth (Plusia chalcites).The aim of this research is to characterization of nucleotide sequence of these COI gene, that was exracted with Cetyl Trimetyl Ammonium Bromide (CTAB) method, and then amplified by Polymerase Chain Reaction (PCR) technique with spesifik primer. The result PCR amplified subsequent analysis of nitrogen base arrangement in these COI gene. The analysis data using the BioEdit and MEGA Version 5.0 software.The results showed that the  segment of COI gene in Plusia chalcites as long 710 bp (base pairs). From these, there are 503/657 nucleotides which are conserved, 154/657 nucleotides of varies, 124/657 parsimoni informative nucleotides and 30/657 singeleton nucleotides. The base N composition consist of 39.0% Timine, 14.0% Cytosin (C), 31.7%Adenine (A) and 15.4% Guanin.Key words: Plusia chalcites, COI Gene characteristics and composition. ABSTRAK Penelitian ini merupakan penelitian eksplorasi untuk mengkarakterisasi sekuen gen COI. Karakterisasi gen COI meliputi isolasi DNA menggunakan metode CTAB (Cetyl Trimetyl Ammonium Bromide), amplifikasi gen COI dengan teknik PCR (Polymerase Chain Reaction) dan squencing untuk analisis susunan basa nitrogen pada gen COI. Analisis data molekuler menggunakan software BioEdit dan MEGA Version 5.0.Hasil penelitian menunjukkan segmen gen COI Plusia chalcites  yang teramplifikasi berukuran 710 pb, dan terkarakterisasi sepanjang 657pb. Dari segmen tersebut terdapat 503/657 nukleotida yang bersifat conserved (kekal), 154/657 nukleotida yang bersifat variabel (bervariasi), 124/657 nukleotida parsimoni informative dan 30/657 nukleotida singleton. Komposisi basa nitrogen sekuen gen COI Plusia chalcites yaitu Timin (T) 39,0%, Cytosin (C) 14.0%, Adenin (A) 31,7% dan Guanin 15,4%.  .Kata kunci :Plusia chalcites, Karakteristik Gen COI