Automatic identification and empty-fetch protection method for photovoltaic water pump frequency converter

• Main Authors: CHEN MING, ZHANG SHENGJIE, MA ZHIBAO, YAO JUN, PENG KAI, XIE FUHUA, ZHU GUOJUN, QU XIAOLI
• Format: Patent
• Language: Chinese; English
• Published: 11.07.2012
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION

The invention discloses an automatic identification and empty-fetch protection method for a photovoltaic water pump frequency converter. A digital signal processor (DSP) is used for continuously sampling the input voltage and the input current of the photovoltaic water pump frequency converter withi...