Implement of DSP based optimal power analyzer

This paper accomplishes a real-time spectrum analyzer by the TMS320LF5509A DSP, and using the V search algorithm to get the optimal analysis. The different sampling rates will change the time scale, and also result in different spectral analysis. In the process of power parameter analysis, the characteristic of original signal is completely kept, and The V search algorithm applies the sum of the minimum amplitude read from the spectrum to find the optimized analysis. This paper accomplishes above theories in an analyzer. The analyzer is composed of a circuit for voltage conversing and current conversing, a keyboard, a LCM, and a DSP module. According to the difference of selection, the analyzer can display the amplitude and phase of voltage or current, and the real power, reactive power and apparent power of load.