scholarly journals Effectiveness of the Two-in-One Device; Ignition Coil and Spark Plug Testing Instrument

2015 ◽  
Vol 20 (1) ◽  
Author(s):  
Allan Q. Guillermo ◽  
Manuel A. Bajet, Jr. ◽  
Dominador F. Tolentino
Keyword(s):  
Output Voltage ◽  
Output Frequency ◽  
Testing Instrument ◽  
R And D ◽  
Voltage Output ◽  
Spark Plug ◽  
Actual Observation ◽  
Technological Modernization ◽  
The Mean ◽  
Automotive Technicians

Technological modernization and invention have brought convenience that life has become fulfilling, and they give amusement to our lives. This study aimed to evaluate the effectiveness of the Ignition Coil and Spark Plug Instrument that can be used to determine the condition of an Ignition coil through high voltage output and also spark plug through visible spark. It made use of project and experimental method of research. This was accomplished in three phases namely: the making of the design for the device, constructing the device and testing the device functionality through actual observation. Group of experts coming from the automotive and electronic sectors evaluated the effectiveness of the automotive testing instrument. A five-point Likert scale was used to find the mean product and the descriptive rating in terms of usefulness, effectives, functionality, reliability and safety. The results of the study revealed that the output voltage and frequency are directly proportional to the resistance of network Ra, but inversely proportional to resistance network Rb in the circuit.  The output frequency is directly proportional to the output voltage. The evaluation of the group of experts in terms of usefulness, effectiveness, functionality, reliability and safety was rated excellent respectively. The device is an instrument for automotive technicians in testing ignition coil and spark plugs. The researchers recommended further study about the device for its safety because based on the result it has the least rating among the different standards although it was evaluated as “Excellent.”            Keywords – Engineering, development, ignition, spark plug, testing instrument, R and D, Vigan City, Philippines

scholarly journals Controlled Energy Flow in Z-Source Inverters

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7272
Author(s):  
Zbigniew Rymarski ◽  
Krzysztof Bernacki ◽  
Łukasz Dyga
Keyword(s):  
Energy Flow ◽  
Output Voltage ◽  
Photovoltaic Cell ◽  
Voltage Source ◽  
Output Frequency ◽  
Maximum Power Point ◽  
Voltage Source Inverters ◽  
Voltage Output ◽  
Voltage Drops ◽  
Power Point

This paper proposes a method to reduce the output voltage distortions in voltage source inverters (VSI) working with impedance networks. The three main reasons for the voltage distortions include a discontinuous current in the coils of the impedance network, the double output frequency harmonics in the VSI’s voltage output caused by insufficient capacitance in the impedance network, and voltage drops on the bridge switches during the shoot-through time. The first of these distortions can be reduced by increasing the current of the impedance network when the output VSI current is low. This method requires storing energy in the battery connected to the DC link of the VSI during the “non-shoot through” time. Furthermore, this solution can also be used when the Z-source inverter works with a photovoltaic cell to help it attain a maximum power point. The Z-source inverter is essentially a voltage source inverter with the Z-source in the input. In this paper, the theory behind basic impedance networks of Z-source and quasi-Z-source (qZ-source) is investigated where simulations of the presented solutions and experimental verification of the results are also presented.

Enhanced output of ZnO nanosheet-based piezoelectric nanogenerator with a novel device structure

2021 ◽  
Author(s):  
Siju Mishra ◽  
P. Supraja ◽  
Vishnu V. Jaiswal ◽  
P. Ravi Sankar ◽  
R. Rakesh Kumar ◽  
...  
Keyword(s):  
Output Voltage ◽  
Photoluminescence Property ◽  
Cost Effective ◽  
Design Strategy ◽  
Aluminum Substrate ◽  
Device Structure ◽  
Novel Device ◽  
Voltage Output ◽  
Zno Nanosheets ◽  
Side Coating

Abstract We report the double-fold enhancement of piezoelectric nanogenerator output voltage with a simple design strategy. The piezoelectric nanogenerator is fabricated with ZnO nanosheets coated on both sides of the aluminum substrate in this new design strategy with necessary electrodes. The cost-effective hydrothermal method is employed to synthesize two-dimensional (2D) ZnO nanosheets on both sides of the aluminum substrate at a low growth temperature of 80˚C for 4 hours. The ZnO nanosheets were characterized for their morphology, crystallinity, and photoluminescence property. The nanogenerator is fabricated with a double-side coated aluminum substrate and compared its performance with a single-side coated aluminum substrate. The nanogenerators fabricated only with one side coating produced an output voltage of ~ 170 mV. In contrast, the nanogenerators fabricated with a double side coating produced an output voltage of ~ 285 mV. The nanogenerator with double-side coating produced ~1.7 times larger voltage output compared to the voltage output from one side coated nanogenerators fabricated with each side of the substrate. The enhancement in the output

scholarly journals RANCANGBANGUN RANGKAIAN INVERTER SPWM UNIPOLAR 1 FASA DENGAN PENGATURAN FREKUENSI OUTPUT

2021 ◽  
Vol 9 (1) ◽  
pp. 46-49
Author(s):  
Fathoni ◽  
Agus Pracoyo ◽  
Totok Winarno ◽  
Rizal Sabillah
Keyword(s):  
Output Voltage ◽  
Test Results ◽  
Motor Speed ◽  
Output Frequency ◽  
Ac Motor ◽  
Power Part ◽  
The Difference ◽  
The Right ◽  
Frequency Variations

Changing the dc sgnal to ac signal is done for te purpose of load regulations, such as the ac motor speed, heater and lamp. Inverter work is done by ac rectification first and then converted again to a 1 phase ac signal. The ac output signal is a sinosoidal PWM (SPWM) type of unipolar 220 volts from the input 24 volt dc voltage. Unipolar SPWM signal generation is done by a microcontroller with programming. The number of counts (resolutions) of the SPWM signal and the period are set from the amount in the register, can be set to 8 bits or other constants. The power part of the SPWM inverter is the N channel MOSFET bridge circuit H with IR2110 solid state driver. Step transformer as a load while step-up the inverter output voltage. Determination of the output frequency is set through a rotary encoder that can be adjusted up (increment) or down (decrement). There are 5 frequency variations, namely 30, 40, 50, 60 and 70 Hz. To get the inverter efficiency, the type of MOSFET used is chosen to have the type that has a low RDS (on) value and the right driving pulse, according to the switch configuration. Measurement of the output frequency is done by reading the image on the osciloscope. The observations show a frequency value that is almost the same as the constant. The test results show the difference in output voltage which is reduced at a 30 watt load.

Comparative Efficiency of Solar Panel by Utilize DC Water Pump and DC Hybrid Cooling System

2015 ◽  
Vol 793 ◽  
pp. 398-402
Author(s):  
Y.M. Irwan ◽  
W.Z. Leow ◽  
M. Irwanto ◽  
M. Fareq ◽  
N. Gomesh ◽  
...  
Keyword(s):  
Output Power ◽  
Solar Irradiance ◽  
Output Voltage ◽  
Cooling System ◽  
Water Pump ◽  
Output Current ◽  
Comparative Efficiency ◽  
Pv Module ◽  
Voltage Output ◽  
Hybrid Cooling

The purpose of this paper is discussed about comparative efficiency of solar panel by utilize DC water pump and DC hybrid cooling system. Ambient temperature and solar irradiance are played main role of the efficiency of PV module. When temperature of PV module increase, the efficiency of PV module will decreased and vice versa. When solar irradiance increase, output current and output power will increase with linear and output voltage will increase with marginal and vice versa. A solution is provided to solve problem of low efficiency of PV module which is DC cooling system. DC brushless fan and water pump with inlet/outlet manifold were designed for actively cool the PV module to improve efficiency of PV cells. The PV module with DC water pump cooling system increase 3.52 %, 36.27 %, 38.98 % in term of output voltage, output current, and output power respectively. It decrease 6.36 °C compare than to PV module without DC water pump cooling system. While PV module with DC hybrid cooling system increase 4.99 %, 39.90 %, 42.65 % in term of output voltage, output current, and output power respectively. It decrease 6.79 °C compare to PV module without DC water pump cooling system. The higher efficiency of PV module, the payback period of the system can be shorted and the lifespan of PV module can be longer.

scholarly journals Output Voltage and Resistance Assessment of Load-Independent-Voltage-Output Frequency Operating Inductive Wireless Power Transfer Link Utilizing Input DC-Side Measurements Only

Electronics ◽  
2021 ◽  
Vol 10 (17) ◽  
pp. 2109
Author(s):  
Or Trachtenberg ◽  
Alon Kuperman
Keyword(s):  
Output Voltage ◽  
Low Cost ◽  
Wireless Power Transfer ◽  
Equivalent Model ◽  
Estimation Accuracy ◽  
Static System ◽  
Power Transfer ◽  
Wireless Power ◽  
Voltage Output ◽  
Conduction Mode

The paper puts forward a method for predicting output voltage and resistance of a series-series (SS) compensated inductive wireless power transfer (IWPT) link operating at load-independent-voltage-output (LIVO) frequency. The link is a part of the static system (reported by the authors in earlier works), wirelessly delivering power into an enclosed compartment without any secondary-to-primary feedback. The proposed algorithm employs input DC-side quantities (which are slow-varying and nearly noise-free, thus measured utilizing low-cost, low-bandwidth sensors) only to monitor output DC-side quantities, required for protection and/or control. It is shown that high estimation accuracy is retained as long as system parameter values are known and the phasor-domain equivalent circuit is valid (i.e., upon continuous-conduction mode (CCM) of the diode rectifier, where the proposed methodology utilizes the recently revealed modified diode rectifier equivalent model for enhanced accuracy). Under light loading (i.e., in discontinuous conduction mode (DCM)), a nonlinear correction is combined with the proposed technique to retain accuracy. The proposed methodology is well-verified by application to a 400 V to 400 V, 1 kW static IWPT link by simulations and experiments.

scholarly journals PENGISIAN AKI DENGAN BUCK CONVERTER

2013 ◽  
Vol 5 (1) ◽  
pp. 29-34
Author(s):  
Yul Antonisfia ◽  
Era Madona
Keyword(s):  
High Voltage ◽  
Output Voltage ◽  
Input Voltage ◽  
Buck Converter ◽  
Flow Sensor ◽  
Voltage Output ◽  
Charging Current ◽  
Lower Voltage

Buck converter is one of DC chopper which has the function of stabilizing the voltage to lower voltage where the output voltage is lower than the input voltage without having to remove power is relatively large. By using a buck converter is a high voltage can be reduced to lower as you wish without losing power is relatively large. The voltage output of the buck converter is able to charge the battery. The magnitude of the output voltage depends dutycyle switching generated by the microcontroller. This tool is also equipped with a flow sensor is used to detect the charging current into the battery. If the charging current is reduced, the buzzer will sound. The tool is based microcontrollers using BASCOM ATMEGA8535, which can generate a PWM with dutycyle specified. Dutycyle determined the size of the input voltage and the desired output.

scholarly journals Design investigation of electromechanical generator for energy harvesting

2019 ◽  
Vol 116 ◽  
pp. 00079
Author(s):  
Nejc Smolar ◽  
Peter Virtič
Keyword(s):  
Energy Harvesting ◽  
Electrical Resistance ◽  
Output Voltage ◽  
Energy Input ◽  
Fill Factor ◽  
Rotational Velocity ◽  
Low Frequency ◽  
Induced Voltage ◽  
Voltage Output ◽  
Cylindrical Form

In this paper designs of electromechanical generator for low frequency energy harvesting have been investigated. Simulation with finite element method has been conducted in order to determine highest output voltage of simple and robust generator consisting of permanent magnet and windings. In first part round magnets have been used in spherical and cylindrical form, benefiting from their ability to roll through winding with almost no mechanical friction inducing voltage in into windings. In the second part spindles with smaller radius than circumference of magnet were added to axis to increase rotational velocity of magnet in ambition to further increase induced voltage. As a result of added spindles and use of different magnet shapes length of winding turn varied and resistance of winding varied with it. To ensure similar conditions, windings have been recalculated to lowest electrical resistance using same fill factor, resulting in less winding turns decreasing induced voltage. In case of same kinetic energy input, higher rotational velocity combined with lower inertia produced higher induced voltage output.

scholarly journals Piezoelectric Sensor with a Helical Structure on the Thread Core

2020 ◽  
Vol 10 (15) ◽  
pp. 5073
Author(s):  
Cheoleon Park ◽  
Hojoon Kim ◽  
Youngsu Cha
Keyword(s):  
Polyvinylidene Fluoride ◽  
Output Voltage ◽  
Piezoelectric Sensor ◽  
Helical Structure ◽  
Bending Angle ◽  
Voltage Output ◽  
Flexural Loading ◽  
Smart Textile ◽  
Series Of Experiments ◽  
Sensing Characteristics

In this paper, we introduce a piezoelectric sensor curled on a thread core in a helical structure. In particular, a polyvinylidene fluoride film was curled and fixed on a thread core. A series of experiments were designed to deliver flexural loading to the piezoelectric sensor, to study its sensing characteristics. The experimental results show that the sensing output of the sensor is in phase with the applied flexural loading. In addition, the output voltage of the textile-based piezoelectric sensor was measured according to various flexural loadings. The flexural bending angle applied to the piezoelectric sensor is expected to be a power function of the voltage output. In addition, we demonstrate a smart textile by weaving the piezoelectric sensor.

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