DSP and CPLD based cascade eleven level dynamic voltage restorer control system
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The invention relates to a cascade eleven-electrical level dynamic voltage restorer control system which is based on DSP and CPLD, which is characterized in that the invention comprises a signal reshaping transformation conditioning circuit, a central data processing circuit, a CPLD extend circuit, a photoelectric ionization and power drive circuit, and a gate electrode turn-off cascade H-bridge circuit. The invention has the advantages that first, the invention utilizes a high-performance digit signal processing chip to achieve the controlling of a cascade multilevel dynamic voltage restorer, and speed and precision of controlling are improved, and the whole control system is led to have excellent adjusting performance and reliability, second, a hardware circuit is simple, output driving pulse is safe and reliable, real-time control precision is high, third, the invention improves the capacity of the device and bucking voltage, enhances the stability of electrified wire netting, and avoids the happening of accidents such as production interruption and the like which are caused by the falling of the voltage, fourth, the invention has an closed-loop control to electronic switches which are constituted by IGBT and the like, which gives full play of high speed data calculating capability of DSP and pinpoint accuracy data processing capability.