Mohd Irwan Yusoff, Dr.
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/39955
This page provides access to scholarly publication by UniMAP Faculty members and researchers2024-03-29T08:33:37ZCurrent total harmonic reduction technique on three-level single phase transformerless photovoltaic inverter using PSpice
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/50186
Current total harmonic reduction technique on three-level single phase transformerless photovoltaic inverter using PSpice
Ismail, Daut; Muhammad Irwanto, Misrun; Suhelmi; Shasidharan, Gomesh Nair; Mohd Irwan, Yusoff; Muhammad Fitra, Zambak; Risnidar, Chan Bahaudin
This paper presents simulation of three-level single phase transformerless photovoltaic
inverter (TPVI). Proposed technique of the simulation is created in PSpice software. The
simulation is constructed by two voltage controlled switches, ETABLE and EVALUE block
diagram. The voltage controlled switches produce two pulse waves with difference time
delay which influence maximum voltage angle and current total harmonic distortion
(CTHD). These two voltage pulse waves are changed become three-level AC waveform by ETABLE block with magnitude of 1 V and increased by EVALUE block which following
value of photovoltaic array voltage. The output of EVALUE block is connected to AC
loads. Resistive load of 30 W lamp and inductive load of 20 W water pump are applied to
the TPVI. The result shows that maximum voltage angle which is varied from 200 to 1800
influences the CTHD, the lowest CTHD of 11.75% is obtained when the maximum voltage
angle is 1250.
Link to publisher's homepage at http://jere.unimap.edu.my
2013-01-01T00:00:00ZElectrical generation of Dye-Sensitized solar cells using sensitizer from rose flower
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/39062
Electrical generation of Dye-Sensitized solar cells using sensitizer from rose flower
Gomesh Nair, Shasidharan; Syafinar, Ramli; Muhammad Irwanto, Misrun; Mohd Irwan, Yusoff; M. R. Mamat; Uda, Hashim, Prof. Dr.; Norman, Mariun
Dye-sensitized solar cell (DSSC) is part of the thin film family that consists of a TiO2 electrode coating which acts as a photo electrode, sensitizer from dye molecules soaked in the TiO2 film, electrolyte layer and a counter electrode. This paper focuses on the usage of a sensitizer from the rose flower and will review some of the research conducted on dye sensitizers from other researcher. Rose flower also known as woody perennial of the genus Rosa, within the family Rosaceae is extracted and were used as sensitizer to fabricate dye sensitized solar cell (DSSC). The photoelectrochemical performance of Rose sensitized solar cell shows parameter of open circuit voltage, VOC, short circuit current, (ISC), fill factor (FF), solar cell efficiency (η), and peak absorbance rate as much as 0.13 V, 57.58 µA, 0.58, 0.85% and 3.5 at 550nm respectively. The photoelectrochemical performance of DSSC and the usage of natural sensitizer from Rose flower dye demonstrate good potential to be applied as a sensitizer yet detail investigations are essential in terms of its applicability for long term application.
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2014-08-01T00:00:00ZPhotovoltaic powered uninterruptible power supply using microcontroller PIC16F628-I/P
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/34378
Photovoltaic powered uninterruptible power supply using microcontroller PIC16F628-I/P
Muhamad Irwanto, Misrun; Mohd Fareq, Abd. Malek, Dr.; Sasongko, P. Hadi; Gomesh Nair, Shasidharan; Mohd Irwan, Yusoff
Uninterruptible power supply (UPS) sits between a power supply such as wall outlet and devices to prevent undesired feature that can occur within the power source such as outages, sags, surges and bad harmonics from the supply to avoid a negative impact on the devices. This paper presents a photovoltaic (PV) powered UPS using microcontroller PIC16F628A-I/P. It is a standby UPS whereas if the main power source fails to supply power to loads, a battery powered inverter turns on to continue supplying power. The battery is charged by the PV using solar charger and transfer switch controlled by the microcontroller. The UPS was tested to a load of 240 V, 20 W AC aquarium water pump. The test result shows that the UPS perform well, when the main power source fails, the battery could power inverter and the microcontroller controls the transfer switch of the UPS inverter and the main power source.
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2014-01-01T00:00:00ZPerformance improvement of dye sensitized solar cell by using recycle material for counter electrode
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/33408
Performance improvement of dye sensitized solar cell by using recycle material for counter electrode
Gomesh Nair, Shasidharan; Mohammad Shafawi; Muhammad Irwanto; Mohd Irwan, Yusoff; Muhammad Fitra; Norman, Mariun
This project is to investigate the counter electrode material from two different carbon sources to fabricate dye sensitized solar cell (DSSC). The carbon sources are extracted from battery and pencil lead. The method to prepare the DSSC is through the conventional Dr.Blading method. The same method is also used for the counter electrode which uses carbon from recycle batteries, the carbon from pencil lead are scribbled onto the ITO glass to get a uniform coating. Both thickness of the counter electrode vary accordingly. The solar cells are then placed under outdoor solar irradiation and the output is taken every 10 minutes. Based on observation, the solar cells which have the carbon from batteries shows higher cell efficiency which is 8.2 % with lower FF of 0.78, compared to by using the pencil lead, the cell efficiency is only 7.23% but with a higher FF of 0.93.
Link to publisher's homepage at http://www.ttp.net/
2013-01-01T00:00:00Z