DSP-based sensorless fault diagnosis for wind generating set

• Main Authors: SHI XIANJIANG, FANG QINGUO, ZHAO XIAOWEN, SUN ZAISONG, REN TINGTING
• Format: Patent
• Language: English
• Published: 03.02.2016
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention relates to a DSP-based sensorless fault diagnosis for a wind generating set. The DSP-based sensorless fault diagnosis for wind generating set comprises a simulation wind speed apparatus, a bearing, a step-up gear box, a double-feed wind driven generator (DFIG), a frequency converter, a current transformer, a voltage transformer, a charge amplifier, high/low pass filters, an analog-to-digital converter, an F28335DSP, and an LCD liquid crystal display screen, wherein the current transformer and the voltage transformer are arranged on a stator of a generator; for acquisition of current signals and voltage signals, the acquired signals are sent to the DSP through the charge amplifier, the high/low pass filters and the analog-to-digital converter; the signals are analyzed by the DSP so that the instantaneous power spectrum of the fault information can be obtained; the instantaneous power spectrum is displayed on the LCD liquid crystal display screen; and the fault information can be visually found through the liquid crystal display screen. The DSP-based sensorless fault diagnosis for a wind generating set can detect the fault information of the wind generating set, and has the advantages of improving the efficiency for fault diagnosis, reducing manual operation, being convenient to use, and being simple in operation.