Current Harmonic Compensation and Power Factor Improvement by Hybrid Shunt Active Power Filter ABSTRACT In this paper the current harmonic can be compensated by using the Shunt Active Power Filter‚ Passive Power Filter and the combination of both. The system has the function of voltage stability‚ and harmonic suppression. The reference current can be calculated by dq transformation. An improved generalized integrator control was proposed to improve the performance of APF. The simulation
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inverse exponential effect on time it took the coffee filter to fall to the ground‚ while surface area had an inverse linear effect. After multiple iterations of this experiment‚ two observations were points of discussion. While height was kept constant during each iteration‚ it was noticed that
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2.0 WAVELET THEORY 2.1 INTRODUCTION: The transform of a signal is just another form of representing the signal. It does not change the information content present in the signal. The Wavelet Transform provides a time-frequency representation of the signal. It was developed to overcome the short coming of the Short Time Fourier Transform (STFT)‚ which can also be used to analyze non-stationary signals. While STFT gives a constant resolution at all frequencies‚ the Wavelet Transform uses multi-resolution
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Others Other forms of discrete wavelet transform include the non- or undecimated wavelet transform (where downsampling is omitted)‚ the Newland transform (where an orthonormal basis of wavelets is formed from appropriately constructed top-hat filters in frequency space). Wavelet packet transforms are also related to the discrete wavelet transform. Complex wavelet transform is another form. Properties The Haar DWT illustrates the desirable properties of wavelets in general. First‚ it can be
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Department of Electrical and Computer Engineering ELEC 456 Communications Jerry Johnson Dr. Bernard Harris December 12th‚ 2010 MATLAB HAND-IN #9 Simulation of the Noise Performance of a FM Communication System Problem 6.17 In this problem‚ we will do this problem using the discriminator developed in problems 4.26‚ and 4.28 to construct the Matlab simulation system. Matlab code for Problem 6.17 %--------------------------------------------------------------- % Problem 6
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The researchers have decided to explore a few of the digital effects readily available for post processing audio from an electric guitar‚ research on what they are‚ and how they affect the sound quality. The researchers will be particularly looking in the built-in effects in the Mac DAW Garageband for electric guitar‚ namely Amp Simulators‚ Auto Wah‚ Chorus‚ Flanger‚ Phaser‚ Distortion‚ Overdrive‚ Fuzz‚ Vibrato‚ Delay‚ and Sustain. Software Since the researchers want to study digital effects
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EE314: CMOS RF Integrated Circuit Design Introduction to Wireless Communication systems Stanford University Hamid Rategh Hamid Rategh Stanford University EE314 HO#1 1 Course Staff Instructor: Dr. Hamid Rategh Email: hamid@smirc.stanford.edu Office Hours: MW 2:15-3:15PM @ CIS-126; Phone: 725-8313 TA: Mehdi Jahanbakht and Deji Akinwande Email: ta314@smirc.stanford.edu Office Hours @ Packard 106 Sunday 3:00 – 3:30 pm (for SCPD students only) Sunday 3:30 – 5:00 pm Thursday 5:00 –
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Bibliography: filter structure for neural recording applications‚” in Circuits and Systems (ISCAS)‚ 2012 IEEE International Symposium on‚ pp. 2231 –2234‚ may 2012. IEEE Journal of‚ vol. 47‚ pp. 244 –256‚ jan. 2012.
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Acoustic Theory and Synthesis Frequency: Frequency means the number of cycles per second and depending on the amount of cycles per second determines how high or low pitched the sound is and the time that it takes to complete one cycle is called the period. Frequency is measured in Hertz (Hz). And An average human is able to hear sounds between 20Hz and 20‚000Hz. As the cycles per second increases‚ the smaller the wavelengths become‚ therefore there is a higher frequency which will cause
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condenser micro phone is connecting into its head of diaphragm which is used to capture the heart sound and change acoustic energy into electrical energy. The heart sound signal is then processed by preamplifier and amplified to achieve the high gain and filter is used to give the desired audible heart sound which is sent wirelessly using RF module at receiver side. Indeed more than one doctor can play the heart sound and can do auscultation easily. The PC connectivity is also made available so that the
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