Results 21 to 30 of about 4,261,455 (352)

Double dual slope square rooter

open access: yesThe Journal of Engineering, 2014
A circuit which accepts input dc voltage V(I) and produce an output voltage V(O) = √V(I)V(T) by using double dual slope principle is described in this Letter. V(T) is a constant voltage which is fixed by two resistors and a power supply voltage. By using
Krishnagiri Chinnathambi Selvam
doaj   +1 more source

Power generation by using piezoelectric transducer with bending mechanism support [PDF]

open access: yes, 2018
This paper presents about power generation by using piezoelectric transducer with bending mechanism support. In this study, bending mechanism is developed by employing 3D printer technology.
Ahmadon, Mohd Anuaruddin   +4 more
core   +5 more sources

Stabilising the output voltage of wireless power pickup through parallel tuned DC‐voltage controlled variable capacitor

open access: yesElectronics Letters, 2016
A new method to regulate the output voltage of the secondary side of an inductive power transfer (IPT) system through a DC‐voltage controlled variable capacitor (DCVC) is proposed.
J. Tian, A.P. Hu
doaj   +1 more source

An AC voltage switching regulator with instantaneous output voltage control.

open access: yesIEEJ Transactions on Industry Applications, 1990
AbstractThis is the first attempt to control the instantaneous output of an ac/ac direct power converter. The ac chopper‐type regulator has the potential ability of quick response to the control command. However, detecting the mean or effective value of the ac output voltage, as is commonly done in the conventional closed‐loop ac regulators, greatly ...
Hiroshi Nomura, Naoya Kawasaki
openaire   +2 more sources

Investigation of Vibration Energy Harvesting in Multilayer Composite Plates with Anisotropic Piezoelectric Patches [PDF]

open access: yesMechanics of Advanced Composite Structures
This study investigates the impact of anisotropic and isotropic piezoelectric coefficients on vibrational energy harvesting using a piezoelectric patch integrated into plate-like structures.
Asghar Jamshiddoust   +2 more
doaj   +1 more source

Direct power control of dual-active-bridge dc–dc converters based on unified phase shift control

open access: yesThe Journal of Engineering, 2019
Dual-active-bridge (DAB) dc–dc converters are the important part of the transformerless electric traction drive system in railway application. Also the dynamic characteristic of DAB converters in the electric traction drive system is very significant ...
Feng An, Wensheng Song, Kexin Yang
doaj   +1 more source

Overmodulation Strategy Using DC-Link Shunt Resistor Inverters to Maintain Output Voltage Linearity

open access: yesIEEE Access, 2021
To detect the three-phase current in the complex plane of a DC link shunt inverter, an algorithm for restoring the current is required. In this paper, a method of dividing the detection voltage and the compensation voltage to match the output voltage as ...
Soonho Kwon   +5 more
doaj   +1 more source

Power loss investigation in HVDC for cascaded H-bridge multilevel inverters (CHB-MLI) [PDF]

open access: yes, 2015
In the last decade, the use of voltage-source multilevel inverters in industrial and utility power applications has been increased significantly mainly due to the many advantages of multilevel inverters, compared to conventional two level inverters ...
Alamri, B, Darwish, M
core   +1 more source

Quantitative Detection of Rock Crack Width Using Microwave Resonance Vibration Eigenvalues

open access: yesIEEE Access, 2019
To accurately detect micro crack widths in rocks in real time, a new method based on a microwave resonance vibration model is proposed. Repeated experiments carried out by the developed microwave resonance vibration model-based sensor and the measuring ...
Chuanjing Ou   +6 more
doaj   +1 more source

Influence of coil spacing on performance of resonant wireless power transmission system

open access: yesGong-kuang zidonghua, 2020
For coil spacing is a key indicator to measure wireless power transfer distance, influence of coil spacing on performance of resonant wireless power transmission system was studied.
QIAO Zhenpeng   +5 more
doaj   +1 more source

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