In the time domain, the absorption current measurement were prefered up to now. Recent methods are based on the recovery voltage measurements. In this paper a new method of the recovery data conversion from the time the frequency domain is proposed. The method is based on the analysis of the...
The application of fuel cell tractors is expected to drive technological upgrades and sustainable development in agricultural machinery. However, fuel cell hybrid systems face issues such as slow dynamic response, low efficiency, and short lifespan. This
Eq. (4.8) is the Fourier transform of discrete time series formed by continuous time signals f(t) after time-domain sampling, that is, discrete time Fourier transform (DTFT). Because it is still continuous in the frequency domain, it needs to further sample the frequency domain to form a ...
The application of fuel cell tractors is expected to drive technological upgrades and sustainable development in agricultural machinery. However, fuel cell hybrid systems face issues such as slow dynamic response, low efficiency, and short lifespan. This
Given these gaps, this paper seeks to provide answers to the following question: How are public debt, exchange rates, inflation rate, and monetary policy connected with GDP across time and frequency domains? How do these variables co-move among themselves and their influence on economic growth in...
This is an article to hopefully give a better understanding of the Discrete Fourier Transform (DFT) by deriving frequency formula for the closely related Discrete Time Fourier Transform (DTFT). The distinction between the two is the latter has a domain on the integers from negative infinity to ...
time-domain signal with 65,536 data points at a sampling rate of 937.5 kHz. The PSD near the resonance frequency was fitted with a Lorentzian curve, and the process was repeated 100 times to obtain the average damping rate and resonance frequency. The above procedure is only applicable under...
In conventional communication systems, a rectangular pulse is commonly used in time-domain, such that its frequency response has a Sinc function shape. An ideal Sinc is unachievable in practical systems due to its doubly infinite frequency response, therefore a truncated Sinc is applied in practice...
The zero-order-hold processing in the DSP domain is equivalent to convolution of the sin(x)/x type of frequency spectrum (of the rectangular function appearing due to holding discrete-time samples) with the DAC core's output-impulse train frequency spectrum (of varying amplitude, in general)....
Frequency-domain small-signal stability analysis is essential to the integration of Grid-Following Converters (GFCs) into power systems. GFCs are Multiple-Input Multiple-Output (MIMO) systems. Thus, basic MIMO stability criteria can be directly applied with no model transformation. However, a MIMO...