587 research outputs found
Optimization Parameter Design of SEPIC-Cuk Converter
No full textThis paper discusses the optimization parameters design of combined SEPIC-Cuk converter based on SEPIC and Cuk operation for dual output voltage polarities. The SEPIC-Cuk converter is designed to be operated in continuous conduction mode, the selection of passive components, i.e., inductor and capacitor are based on the switching frequency, the duty cycle and inductor current ripple. The range of duty cycle for buck operation is 0<D<0.5, meanwhile for boost operation, the duty cycle range is 0.5<D<1.The simulation and experimental results show a good agreement. Thus, the designed parameters of the converter are confirmed. The finding shows that during buck operation, the output voltages are +3.96 V and -3.96 V with duty cycle of 0.25 when the output voltage is 12 V. Meanwhile, during boost operation, the output voltages are +36 V and -36 V with the duty cycle of 0.75 when the output voltage is 12 V
Optimization parameter design of SEPIC-cuk converter
No full textThis paper discusses the optimization parameters design of combined SEPIC-Cuk converter based on SEPIC and Cuk operation for dual output voltage polarities. The SEPIC-Cuk converter is designed to be operated in continuous conduction mode, the selection of passive components, i.e., inductor and capacitor are based on the switching frequency, the duty cycle and inductor current ripple. The range of duty cycle for buck operation is 0<D<0.5, meanwhile for boost operation, the duty cycle range is 0.5<D<1.The simulation and experimental results show a good agreement. Thus, the designed parameters of the converter are confirmed. The finding shows that during buck operation, the output voltages are +3.96 V and -3.96 V with duty cycle of 0.25 when the output voltage is 12 V. Meanwhile, during boost operation, the output voltages are +36 V and -36 V with the duty cycleof0.75 when the output voltage is 12
Voltage tracking of bridgeless PFC Cuk converter using PI controller
No full textThis paper proposes a Proportional-Integral (PI) control voltage tracking of Bridgeless Power Factor Correction (BPFC) Cuk converter. In order to investigate the behaviour of different output voltages during overshoot, steady state and step response, P.I controller is designed to set the -42 V, -48 V, -54 V output voltages. The simulation results show that the proposed PI controller able to control the output voltage and achieve fast steady state and step response of BPFC Cuk converter. When the value of output voltage increase, the overshoot voltage will become higher but the steady state respond will be faster. Furthermore, BPFC Cuk converter with P.I controller have low output voltage ripples
Voltage tracking of bridgeless PFC cuk converter using PI controller
No full textThis paper proposes a Proportional-Integral (PI) control voltage tracking of Bridgeless Power Factor Correction (BPFC) Cuk converter. In order to investigate the behaviour of different output voltages during overshoot, steady state and step response, P.I controller is designed to set the -42 V, -48 V, -54 V output voltages. The simulation results show that the proposed PI controller able to control the output voltage and achieve fast steady state and step response of BPFC Cuk converter. When the value of output voltage increase, the overshoot voltage will become higher but the steady state respond will be faster. Furthermore, BPFC Cuk converter with P.I controller have low output voltage ripples
DESAIN DAN IMPLEMENTASI CUK REGULATOR POWER SUPPLY
No full textSaat ini dapat kita lihat bidang elektronika berkembang sangat cepat, berbagai
macam perangkat elektronika dibuat untuk memudahkan manusia melakukan berbagai
aktivitas yang ada. Perangkat elektronika tersebut tentunya membutuhkan sumber energi
yang sesuai agar dapat bekerja. Seperti yang kita ketahui, mayoritas perangkat elektronika
memanfaatkan sumber energi Direct Current (DC), yang dapat diperoleh dari energi
baterai dan Power Supply DC. Namun sumber energi baterai memiliki kapasitas
penyimpanan energi yang terbatas sehingga tidak dapat terus-menerus memberikan energi.
Oleh karena itu, agar perangkat elektronika mendapat supply energi secara terus-menerus,
maka kita dapat menggunakan Power Supply DC sebagai sumber energinyaDalam tugas akhir ini dirancang sebuah Switch Mode Power Supply DC yang
memiliki tegangan output sebesar -15 V dan dapat beroperasi pada tegangan masukan pada
220V AC. Topologi yang digunakan dalam perancangan ini menggunakan topologi Cuk
Converter. Digunakan IC NE555 sebagai pengaturan Pulse Width Modulator (PWM) dan
IRFP460 sebagai komponen pensaklaran.Dalam pengujian, hasil output yang didapatkan yaitu -15,3 Volt namun tegangan
keluaran akan drop saat diberi beban. Efisiensi yang dihasilkan oleh Cuk Regulator Power
Supply rata-rata sebesar 71,57%. Selain itu juga dilakukan pengujian perbandingan hasil
drop tegangan dengan power supply linier. Drop tegangan yang dihasilkan oleh Cuk
Regulator Power Supply lebih kecil yaitu 6,67% dibandingkan dengan Power Supply
Linier yaitu 12,7%. Hasil ini diperoleh saat menggunakan beban lampu 12 Volt DC. Switch Mode Power Supply DC, Cuk Converte
A Low-Power Measurement Method of Photovoltaic I-V Curve Based on ´Cuk Circuit
No full textPhotovoltaic power generation attracts attention in new energy recently. Photovoltaic cell absorb the radiant energy of sunlight and convert it directly into electric energy. Photovoltaic cells have own characteristic of the I-V curve which depends on solar radiation. Therefore we incorporate a ´Cuk circuit in a generation system and an accumulation of electricity system by this experiment. And we carry out the I-V curve measurement and charge without changing a circuit.departmental bulletin pape
Modeling and Performance Analysis of New Cuk Converter Topology for Photovoltaic Applications
No full textPhotovoltaic (PV) is a technical name in which radiant (photon) energy from the sun is converted to direct current (dc) Electrical Energy. PV power output is still low, continuous efforts are taken to develop the PV converter and controller for maximum power extracting efficiency and reduced cost factor. The maximum power point tracking (MPPT) is a process which tracks one maximum power point from array input, varying the ratio between the voltage and current delivered to get the most power it can. The selection of right converter for different application is a key factor for the optimum performance of the photo voltaic system. This paper details the study on state of the art in research works on Cuk power converters and their characteristics. A new cuk converter topology has also been proposed for the optimal performance of the photovoltaic system. Modeling of the PV array and simulation of basic cuk converter and the proposed cuk converter is carried out in Matlab/Simulink Software. Index Terms - PV Module, MPPT, Incremental Conductance (IC) Algorithm, Cuk converter, Optimal performanc
A Hybrid Cuk PFC Converter for 48 V – 12 Ah Battery Charging Application
No full textPower Factor Correction (PFC) converters are essential in designing any charging architecture, regardless of the battery's capacity and the application. Nevertheless, power converters, having continuous output current features, are widely used for battery charging applications. In contrast, converters with continuous input current characteristics exhibit better PFC performance. The Cuk converter can be an ideal PFC charger due to its continuous input and output current features. This article presents a hybrid Cuk converter with a switched capacitor configuration as a 48 V - 12 Ah battery charger. The switched capacitor allows the converter to operate at nearly 50% duty cycle. Along with the typical average current mode (ACM) control, an additional voltage compensator has also been proposed to ensure the typical constant-current and constant-voltage (CC-CV) mechanism. Overall, the topology improves the power quality significantly with a unity power factor and only 2.32% THD
Retificador CUK Monofásico Dobrador De Tensão Operando No Modo De Condução Descontínuo
No full textEste artigo apresenta a análise estática, dinâmica e a validação experimental de um retificador Cuk monofásico dobrador de tensão operando no modo de condução descontínuo (MCD). A topologia proposta integra dois retificadores Cuk clássicos através de um interruptor de três posições, o que dobra a tensão de saída ou reduz os esforços de tensão em relação à topologia clássica. A estrutura aumenta o ganho de tensão, mantendo a característica baixadora/elevadora da família Cuk. Além disto, parte dos componentes de potência são acionados somente em meio ciclo da rede elétrica, o que também reduz esforços de corrente nos semicondutores. Essas características permitem aumentar os níveis de potência e de tensão de operação do conversor Cuk. A topologia proposta foi analisada no MCD, modo no qual o alto fator de potência é naturalmente obtido sem a necessidade de uma malha de controle de corrente. De modo a corroborar a análise teórica desenvolvida, foi construído um protótipo em laboratório de 1 kW, com tensão eficaz de entrada de 220 V, tensão de saída de 400 V e frequência de comutação de 50 kHz. São apresentados resultados experimentais com malha de controle da tensão de saída, sendo que, em potência nominal, o retificador Cuk dobrador de tensão atingiu um rendimento de 94,68% e uma corrente de entrada com THD de 1,86%
Porous Metal-Organic Framework CUK-1 for Adsorption Heat Allocation toward Green Applications of Natural Refrigerant Water
No full textThe development of new water adsorbents that are hydrothermally stable and can operate more efficiently than existing materials is essential for the advancement of water adsorption-driven chillers. Most of the existing benchmark materials and related systems in this field suffer from clear limitations that must be overcome to meet global requirements for sustainable and green energy production and utilization. Here, we report the energy-efficient water sorption properties of three isostructural metal-organic frameworks (MOFs) based on the simple ligand pyridine-2,4-dicarboxylate, named M-CUK-1 [M3(μ3-OH)2(2,4-pdc)2] (where M = Co2+, Ni2+, or Mg2+). The highly hydrothermally stable CUK-1 series feature step-like water adsorption isotherms, relatively high H2O sorption capacities between P/P0 = 0.10-0.25, stable cycling, facile regeneration, and, most importantly, benchmark coefficient of performance values for cooling and heating at a low driving temperature. Furthermore, these MOFs are prepared under green hydrothermal conditions in aqueous solutions. Our joint experimental-computational approach revealed that M-CUK-1 integrates several optimal features, resulting in promising materials as advanced water adsorbents for adsorption-driven cooling and heating applications.</p
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