Device and method for inspecting a condition of rotor windings of a generator

A device and method for inspecting a condition of rotor windings of a generator, comprising a central processing unit, a storage unit, a sequential logic circuit, a high-voltage full-cycle pulse matching generator, a pulse signal coupling feedback acquisition circuit, a data acquisition system, an upper computer management system and a waveform data analysis system;

• wherein,
• the central processing unit controls the sequential logic circuit, the sequential logic circuit is connected to the high-voltage full-cycle pulse matching generator, the high-voltage full-cycle pulse matching generator applies a waveform to a generator rotor, the pulse signal coupling feedback acquisition circuit collects the waveform reflected by the generator rotor and transmits the waveform to the data acquisition system through an operational amplifier;
• the data acquisition system converts a magnetic field signal into digital information, the central processing unit transmits the digital information to an upper computer, the upper computer is connected to the waveform data analysis system;
• the sequence circuit is configured to realize generation and switching of a specific test sequential waveform, data acquisition, data transmission, and buffering;
• the high-voltage full-cycle pulse matching generator is configured to couple a digital waveform generated by the sequential logic circuit to form a transient bidirectional rotating magnetic field pulse matching a load, and apply the transient bidirectional rotating magnetic field pulse to the generator rotor;
• the pulse signal coupling feedback acquisition circuit is configured to couple all waveforms reflected by the generator rotor to form a magnetic field waveform, and transmit the magnetic field waveform to an acquisition part through the operational amplifier;
• the data acquisition system is configured to convert a transient signal amplified by the operational amplifier into a digital information stream by DMA, store the digital information stream in a buffer, and transmit the digital information stream to the upper computer;
• the upper computer management system is configured to transfer all controllable parameters to the central processing unit, and collect all data in real time;
• and
• the waveform data analysis system is configured to synthesize functions of background storage, processing, printing, and output.