Phase-locked loop improving high-frequency distorted waveform phase detection

The invention discloses a phase-locked loop improving high-frequency distorted waveform phase detection, relates to the field of electric power and electronics, and mainly aims at solving a phase detection problem of high-frequency distorted waveforms. The comparator comprises a forward direction dead zone detector, a reverse direction dead zone detector, a first XOR comparator, a second XOR comparator, a first loop filter, a second loop filter, a first voltage controlled oscillator, a second voltage controlled oscillator, a first square-wave generator, a second square-wave generator, a first integrator, a second integrator, a third integrator, a first comparator and a second comparator. Voltage or current signals output by the output terminal of an inverter are connected to the forward direction dead zone detector and the reverse direction dead zone detector. Output signals of the forward direction dead zone detector and the reverse direction dead zone detector perform XOR operation respectively with output terminals of the first and second square-wave generators, and operation results are output to the loop filters, then are adjusted by the voltage controlled oscillators, and finally are output to the square-wave generators. Needed phase signals can be obtained via comparison operations between original phase signals obtained through the integrators and phase signals, also obtained through the integrators, of the first and second square-wave generators.