FAST PEAK DETECTOR FOR VARIABLE FREQUENCY 3-PHASE SINUSOIDAL SIGNALS

A fast peak detector for three-phase variable frequency sinusoidal sig nals is proposed. This novel detector fully uses the three-phase chara cteristic to achieve instantaneous response and frequency independence characteristics. Moreover, the proposed detector possesses excellent linearity and low sensitivity to small voltage unbalance and harmonic distortion. Because of its promising accuracy and transient response, it can be used to improve the transient response performance of the co nventional sinusoidal peak detectors. Theoretical analysis and some ex perimental results are also detailed in this context.