| This thesis is based on the application project:the digital detection system of powerquality by the advanced manufacturing process technology of FPGA as the maintool,desiging the three-phase-AC power quality system,the concrete design includesteady-state phase-voltage,frequency and phase-sequency detection.Firstly, the significance of the power quality from the study, aim at thecharacteristic of the power quality,put forward the necessity of the power qualitydetection.Then expound the apparatus and design step of FPGA chip,introduce somerelative knowledge of hardware description language—VHDL.To carry out the concretedetection parameter:phase-voltage,phase-frequency and three-phase-sequence detectionin AC Frequency Power Supply,the system designed all the modules seperately,thesemodules turn into function module after validate,and use the top-module link thefunction modules so that generate the finally program code.This hirarchical design andprogrammable bring the well-beded program structure,provided the convenience todesign and maintenance,it also provided the advantage to updrade and extend.Using theVHDL as the system programmable language,not only in existing programminglanguages to understand simple hardening of design ideas,but its software is now themain trend of the electronic system design.After the software testing,the system was setup by the hardware platform and experimental validation,it proves that the design iscorrect and reasonable.Electronic circuit system,built on the basis of the FPGA platform compared withthe conventional IC integration and intelligent advantage of the obvious advantages,notonly conducive to the maintenance of the entire system,ease of upgrade and expensionof the system,and promote the integrated circuitindustry by leaps and bounds.Digitalsystem design software hardening,make the entire system design tighter,promotereasonable,convenient debugging and reliable operation. |
