Harmonic

This shows that which is inline with the definition of simple harmonic motion. , where is a constant. refers to angular frequency that is defined as and equates to . The periodic time for simple harmonic motion is . Therefore the period of a mass-spring system is given by . In order to obtain a linear graph and determine the spring constant from the gradient, the equation is squared

system can be altered when the harmonic distortion levels are not within the acceptable limits through changing sizes or locations of the capacitor, by changing source characteristics, or by design a harmonic filter. Filters are the most common solution as it can provide reactive power support at the fundamental frequency and a low impedance path for one or more harmonic current components to flow. The filter elements must be specifically designed to withstand the harmonic components along with the fundamental

For emolument of current harmonics (if any), the instantaneous resoluteness of different active and reactive powers is utilized - the active and reactive powers are computed utilizing p-q theory. No restrictions are imposed on the voltage or current wave forms, and it can be applied to three-phase systems with or without a neutral wire for three-phase generic voltage and current wave forms. Thus, it is valid not only in steady state, but withal in transient states. The p-q Theory first transforms

Advantages: • Harmonic reduction is possible. • Undesirable harmonics are absent. • Reactive power compensation is possible. Disadvantages: • Resonance with line impedance occurs. • Tuning frequency is less accurate and requires a lot of calculations. • It cannot be used when harmonic components vary randomly. • Heavy and bulky. 3.1.2 Active Filters: It inject equal and opposite harmonics onto the power system to cancel those generated by other equipment. Remarkable advances in the field of power

3. Results The investigated minerals show Raman bands between 375 and 50 cm-1 (Figs. 1-4, Table 1), where the cut-off value of the employed Raman notch and edge filters determine the low-energy limit. The Raman bands in the boulangerite spectra occur in the vibrational region between 375 and 50 cm–1 (Fig. 1, Table 1), with no additional bands in higher or lower wavenumber regions. Boulangerite spectra are characterized by a very strong band at 335 cm–1 and reveal thirteen strong, medium, weak to

Recommender Systems are based on well-structured and incremental algorithms that have different strengths and weaknesses \cite{ricci2011introduction}. In general, the main existing RSs are concerned with improving accuracy with the premise of being useful to users. In this context, there is an increasing number of custom techniques that analyze the profile of the target user in order to better satisfy them \cite{bobadilla2013recommender}. In this sense, we conducted a broad study of the several metrics

The objective of this project is to design and created a device that can process the output of a guitar pickup and automatically tune the guitar to the desired overall tuning. The core principles of the projects would be a device that is built exclusively for tuning a guitar. The device developed from the current project should be both gentle and durable. When the user strums all six strings together, the vibrations are detected by a piezoelectric sensor which utilizes an algorithm to determine each

oscillation pendulum has a simple harmonic motion (SHM). A stopwatch was used to measure the time taken for 10 complete cycles, which called oscillations. The length of the pendulum was varied for fixed mass and recorded in table 1. The output result for this experiment was agreed with the theory. The graph plotted and got R2=0.99, which was close to the linearity 1. -Introduction: The motion repeats itself at regular intervals is called periodic, oscillation, or simple harmonic motion (SHM). The time taken

Vibration test of composite materials on the basis of measurement of dynamic properti INTRODUCTION On the basis of measurement of viscoelastic and dynamic properties, there are four important parameter such as damping, relaxation, creep, and strain rate, which describes evidence of viscoelastic behavior and can be calculated with the help of an experiment, but this paper describes the method of test for the measurement of damping. In addition, the notation of complex modulus describes conventionally

The Rockwell Collins Satellite Transportable Terminal (STT) is an important satellite for the signal branch that is used to make communications virtually anywhere. A suspension system needs to be put into the STT so that it will not be damaged while being loaded and transported. There are three shock systems available with different spring constants and damping coefficients. The three shock systems are called Air Coasters, Cloud Riders, and Extreme Shocks. A HMMWV was being tested when it began