Reactive Power Integrated Controller Based On Fuzzy Control

In this thesis a fuzzy control system used in Voltage and Reactive Power auto regulatory device is designed based on the nine-zone controlling principle. In the fuzzy system, the member function is triangle function, the fuzzy reasoning is mamdani method and the antifuzzy is cneteriod method. The software MATLAB is used to calculate the fuzzy system, the fuzzy system divide the voltage-reactive pane into nine fuzzy zone, in this way the domain-swing between closing domain is eliminated. And the fuzzy system also have the special regular to eliminate the domain-swing between some special phenomenon. In designing, the experience of electrical engineers is considered, so this fuzzy system should be more suitable for the practice. The fuzzy system comes into realization by querying control table, in this way the MCU would have less calculation and a high executing speed.A new intelligent power-meter IC-CS5640A is used to sample data in designing, including voltage, current, active-power, power-factor, reactive-power. The CS5640A replace a part of working of MCU so that the whole system will has a higher speed and will be more efficient and more accurate.After the FIS is finished, the fuzzy regulatory device is developed. In this device MCS-51 serials MCU is used to control others chips. The sampling data are displayed by 7-segment LEDs that are designed in a dependent PCB, the Display Board has a serial interface which use less pins of MCU. It's a efficient way. At last the outputs by calculation and reference of FIS control the capacitor-group and voltage adjuster by relay-group, the whole device is divided into three part, the first part is Sampling&Control Board; the second part is Display LEDs Board and the third part is Supply&Output Board. By debugging and testing the device has worked well.