phase Angle, Active, and Apparent Power
To study the meaning ofphase angle.
To study the relationship between active and apparent power.
_ _-I n DCFmIt,-taT~tanw ioad, as the voltage across the resistor increases, the current thro
Experiment V2 Determination of Transformer Equivalent Circuit Parameters Using the Open Circuit and Short Circuit Tests Objective To determine the equivalent circuit parameters of a single phase transformer using the open circuit and short circuit tests.
Three-Phase Power Measurement
To measure power in a three-phase circuit using the t o wattmeter method. w
To determine t active and reactive power, and the power factor of a threehe phase system.
A wattmeter, usedfor measuring pow
Three-Phase Watts, Vars, and Volt-Amperes
To determine the apparent, active and reactive h e r in three-phase circuits. To calculate the power factor in three-phase circuits. DISCUSSION In Experiment 45 you calculated active power
To study the relationship between voltage and current in three-phase circuits.
To learn how to make delta and wye connections.
To calculate the power in three-phase circuits.
Students tend to approach three-ph
OBJECTIVE To learn how to use a wattmeter. To become familiar with acbive and apparent power in AC circuits.
In direct current circuits the power (in watts) supplied to a resistive load is always equal to the product
Single Phase Circuit
The phase-shift between the current and voltage is negative. The current is lagging with respect to the voltage.
I L R g
V( t )
5 0 5
I( t )
Energy in one form Energy in another form
Losses Efficiency = output / input
Types of converters Rotating machines Solar cells Power electronic converters Fuel cells Nuclear reactor Batteries Flywheels Water - hydroelectric
Fuel cells Conve
Knowledge of Mathcad and/or Matlab Problem solving by Mathcad/Matlab (or equivalent package) encouraged
EEE 360. Introduction
NO LABS THIS WEEK
Laboratory: Eleven (11) laboratory sessions
with a total of 29 experiments