scholarly journals Output Voltage Analysis of Inductive Wireless Power Ttransfer with Series LC and LLC Resonance Operations Depending on Coupling Condition

Electronics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 592 ◽  
Author(s):  
KangHyun Yi
Keyword(s):  
Output Power ◽  
Output Voltage ◽  
Maximum Output Power ◽  
Maximum Output ◽  
Voltage Gain ◽  
Wireless Power ◽  
Critical Coupling ◽  
Coupling Condition ◽  
Load Variation ◽  
Receiving Coil

This paper analyzes the output voltage of an inductive wireless power transfer (WPT) depending on coupling conditions. When the optimum efficiency and maximum output power are obtained, it is called critical coupling, so the receiving coil and the transmitting coil should be separated by a certain distance. When the distance between the transmitting coil and receiving coil is very short, it is called over coupling, and output power decreases with the optimal operating state of the critical coupling condition. To design the entire circuit system for the inductive WPT depending on the coupling condition, it is beneficial to analyze the output voltage according to a load variation, an input voltage, and an operating frequency. Therefore, the output voltage depending on the coupling condition in the inductive WPT is analyzed in this paper. The output voltage gain in critical coupling condition is greater than one and is not affected by a load variation by a series LC resonant operation. The reduced output power in an over coupling condition can be recovered by a series LLC resonant operation. In addition, the output voltage gain is almost one and is affected by the load variation in the over coupling condition. A 5W prototype is implemented with the wireless power consortium standard coils and experimental results are shown to verify theoretical analysis and operation.

scholarly journals Implementasi MPPT Panel Surya Berbasis Algoritma Perturbasi & Observasi (PO) Menggunakan Arduino

2021 ◽  
Vol 2 (2) ◽  
pp. 162-167
Author(s):  
Haris Masrepol ◽  
Muldi Yuhendri
Keyword(s):  
Control System ◽  
Output Power ◽  
Output Voltage ◽  
Maximum Output Power ◽  
Buck Converter ◽  
Maximum Power ◽  
Maximum Output ◽  
Solar Panels ◽  
Maximum Power Point ◽  
Power Point

Solar panels are a renewable energy power plant that uses sunlight as its main energy source. The power generated by solar panels are determined by the size of the solar panels, solar radiation and temperature. The power of the solar panels is also determined by the output voltage of the solar panels. To get the maximum output power at any time, it is necessary to adjust the output voltage of the solar panel. This study proposes controlling the maximum output power of solar panels, also known as maximum power point tracking (MPPT) by adjusting the output voltage of the solar panels using a buck converter. The buck converter output voltage regulation at the maximum power point of the solar panel is designed with the Perturbation and Observation (PO) algorithm which is implemented using an Arduino Mega 2560. This MPPT control system is applied to 4x50 Watt-Peak (WP) solar panels which are connected in parallel. The experimental results show that the proposed MPPT control system with the PO algorithm has worked well as expected. This can be seen from the output power generated by the solar panels already around the maximum power point at any change in solar radiation and temperature.

Thermoelectric Power Devices Based on InN Thin Films

2006 ◽  
Vol 973 ◽  
Author(s):  
Takayuki Matsumoto ◽  
Shigeo Yamaguchi ◽  
Atsushi Yamamoto
Keyword(s):  
Thin Films ◽  
Temperature Dependence ◽  
Thermoelectric Power ◽  
Output Power ◽  
Output Voltage ◽  
Maximum Output Power ◽  
Maximum Output ◽  
Power Devices ◽  
Polyimide Films ◽  
Radio Frequency Sputtering

ABSTRACTWe have studied the temperature dependence of thermoelectric properties of amorphous InN thin films prepared by reactive radio-frequency sputtering. We fabricated 60-pair and 120-pair InN-chromel films, which were deposited on polyimide films. For the 120-pair device, the maximum open output voltage and the maximum output power were 210 mV and 65 nW, respectively, at temperature difference of 168 K.

Study on the Output Characteristics of Piezoelectricity Generator

2010 ◽  
Vol 156-157 ◽  
pp. 908-914
Author(s):  
Xiu Li Yang ◽  
Tie Min Zhang ◽  
Sheng Wen
Keyword(s):  
Dielectric Loss ◽  
Output Power ◽  
Output Voltage ◽  
Maximum Output Power ◽  
Excitation Frequency ◽  
Maximum Output ◽  
Conductive Loss ◽  
Optimum Load ◽  
Set Up ◽  
The Relationship

. For the purpose of improving the output power of piezoelectricity generator (PG), this paper derivates the improving equivalent circuit of piezoelectricity element according to piezoelectricity effect. The dielectric loss and conductive loss are considered. The dielectric loss is caused by the hysteretic effect between leakage current and electric intensity in the medium inside. The conductive loss is caused by the ceramic particles boundary conditions. The relationship between output voltage and current is set up. The relationship between resistance and output power is set up. The relationship between output voltage and out power is set up. Those relationships are simulated and experimented. From the results, it is can be known that there is an optimum load(200 ) for the maximum output power (70 ) in condition of fixed structure, size and fixed excitation frequency and amplitude. With the increasing of voltage, the current is decreasing with parabolic form and the output power increases lowly to a maximum power firstly, and then decreases fast.

scholarly journals Numerical analysis of semiconductor thermoelectric generator

2020 ◽  
Vol 24 (3 Part A) ◽  
pp. 1585-1591
Author(s):  
Zhifei Wu ◽  
Yuxia Xiang ◽  
Jianjun Wang
Keyword(s):  
Contact Resistance ◽  
Output Power ◽  
Temperature Difference ◽  
Output Voltage ◽  
Thermoelectric Generator ◽  
Maximum Output Power ◽  
Load Resistance ◽  
Maximum Output ◽  
Generation Model ◽  
Output Performance

A thermoelectric generation model is proposed based on the structure of thermoelectric generator, working conditions, the effect of air heat transfer and contact resistance in thermoelectric components. In addition, the effect of the thermoelectric generator output performance under the condition of different temperature of the cold and heat source, contact resistance between the cold-end and hot-end, the load resistance and the contact resistance is calculated. The results show that the output voltage is linear associate with the temperature difference between hot and cold ends, however, the output power increase along with the increase of temperature of hot-end and decrease of cold-end. The output voltage reaches 5.76 V and the output power reaches 9.81 W when the temperature difference is 200?C. Assume that the contact resistance is ignored, the output voltage and power reach peak values of 3.61 V and 3.85 W. The output performance of thermoelectric generator decreases with the increase of thermal contact resistance at hot and cold ends, and the reduction is getting lower and lower. With the increase of the load resistance, the output power increases at the beginning and then decreases. The optimal output power is 3.69 W when the contact resistance is 0 ? and the optimal load resistance is 3.3 ?. The maximum output power corresponding to neglecting the contact resistance will be reduced by 13.5% when the contact resistance is 0.5 ?.

scholarly journals Optimization of Non-Uniform Deformation on Piezoelectric Circular Diaphragm Energy Harvester with a Ring-Shaped Ceramic Disk

Micromachines ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 963
Author(s):  
Chaoqun Xu ◽  
Yuanbo Li ◽  
Tongqing Yang
Keyword(s):  
Output Power ◽  
Output Voltage ◽  
Energy Harvester ◽  
Maximum Output Power ◽  
Maximum Output ◽  
Microelectronic Devices ◽  
Piezoelectric Energy ◽  
Ceramic Disk ◽  
Application Potential ◽  
Circular Diaphragm

Piezoelectric energy harvesting technology using the piezoelectric circular diaphragm (PCD) has drawn much attention because it has great application potential in replacing chemical batteries to power microelectronic devices. In this article, we have found a non-uniform strain distribution inside the PCD energy harvester. From the edge to the center of the ceramic disk, its output voltage first increases and then decreases. This uneven output voltage reduces the output power of the PCD energy harvester. Based on this phenomenon, we reduce the ceramic disk diameter and dig a hole in the center, analyzing the effect of removing the ceramic disk’s low output voltage part on the PCD energy harvester. The experimental results show that removing the ceramic disk’s low output voltage part can improve the output power, reduce the resonance frequency, and increase the optimal impedance of the PCD energy harvester. Under the conditions of 10 g proof mass, 9.8 m/s2 acceleration, the PCD energy harvester with a 19-mm diameter and a 6-mm hole can reach a maximum output power of 8.34 mW.

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