The Control For A UPS Based On Dual CPU

With information technology developing more and more UPS are used. The digital control tends to be one of the promising methods in the UPS control technologyThis thesis discusses the theories of digital control of UPS. The PID control of output voltage feedback is easy to give attention to static and dynamic performance of the control system. Output performance of inverter of UPS is improved when RMS of output voltage feedback is added to PID control system. The hardware and software is designed in order to achieve the digital PID control of inverter of UPS.Supervision based on DSP and MCU for UPS is discusses in this thesis also,which includes malfunction monitoring and protecting,communication between UPS and PC. And the hardware and software of supervision for UPS is designed.Analysis,simulations and experiments have verified the system's feasibility and practicability. The research in the thesis has paved a way for the further research and application in the digital control of UPS.