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Now showing items 41-50 of 72
Effect of solar irradiance and temperature on photovoltaic module electrical characteristics
(Universiti Malaysia Perlis (UniMAP), 2010-10-16)
The electrical characteristics of photovoltaic (PV)
module are dependent on solar irradiance and
temperature. It consists of short circuit current, open
circuit voltage, maximum power, fill factor and
efficiency. This ...
Design and sizing photovoltaic system for DC air-conditioning
(Universiti Malaysia Perlis (UniMAP), 2010-10-16)
The author is designing the photovoltaic system to
support the DC air-conditioning. There are calculations
that have to achieve such as daily load energy (EL),
energy directly from sun (Esun), area of photovoltaic ...
Predicting an investigation of flux distribution in three phase induction motor stators by using different stator slot sizes
(Universiti Malaysia Perlis (UniMAP), 2010-09-16)
The predicting of different stator slot sizes on flux
distribution in three phase induction motor is
presented. For both stator models, the maximum flux
density is found near the tooth tip and minimum
towards the outer ...
An alternative approach to solar and grid-connected hybrid electricity for homes and buildings in Malaysia
(Universiti Malaysia Perlis (UniMAP), 2010-10-16)
This paper presents the proposal of a solar and
grid-connected hybrid electricity system for homes and
also buildings. A new concept of using a DC motor
and synchronous generator as an electromechanical
inverter is ...
Current transformer reaction with total harmonic distortion
(Universiti Malaysia Perlis (UniMAP), 2010-10-16)
Current transformer (CT) has a critical role in
protective and measurement devices used in both the
industrial and the utility worlds. However, the used of
current transformer in harmonic condition brings
some effects ...
The effect of different stator slot size on the stator copper loss
(Universiti Malaysia Perlis (UniMAP), 2010-10-16)
The input power to an induction motor is in the form of three phase electric voltages and currents. The first losses encountered in the machine are I2R losses in the stator winding. The stator copper loss occurs when the ...
Flux pattern in 1000 kVA 11/.433 kV distribution transformer core to sinusoidal wave
(Universiti Malaysia Perlis (UniMAP), 2010-10-16)
A study was conducted using sinusoidal waveform
to capture flux pattern in CRGO M5 material in a
1000kVA 11kV 3 phase transformer core. It is found
that it takes about 180⁰ electrical degree cycle for a
pool of flux ...
Investigation of power factor on harmonic effect due to types of voltage source
(Universiti Malaysia Perlis (UniMAP), 2010-10-16)
This paper discussed about power factor on harmonic effect due to types of voltage source. Usually, the voltage source is sinusoidal. But in actually, the condition of the load is has voltage sources through the elements ...
Clear sky global solar irradiance on tilt angles of photovoltaic module in Perlis, Northern Malaysia
(Institute of Electrical and Electronics Engineers (IEEE), 2011-06-21)
The performance of a photovoltaic (PV) is highly influenced by its orientation and its tilt angle with the horizontal, due to the fact that both the orientation and tilt angle change the amount of solar radiation reaching ...
Combination of Hargreaves method and linear regression as a new method to estimate solar radiation in Perlis, Northern Malaysia
(Elsevier Ltd., 2011-11)
The best way to obtain the solar radiation data of a particular place of interest (POI) is to measure at the specific site continuously and accurately over the long term. However, due to financial, maintenance, calibration ...