Study On High Voltage Pulse Power Supply With Pulse Boost Mode

The high-voltage pulse power supply has the characteristics of high output voltage,large output current,narrow pulse width and high repetition frequency,and is widely used in many fields.In this thesis,a pulse-boosting high-voltage pulse power supply has been designed to realize the function of adjustable output amplitude,frequency and pulse width within a certain range.The high-voltage pulse power supply scheme designed in this thesis is mainly composed of rectification and filtering circuit,boosting circuit,full-bridge inverter circuit and cascaded pulse transformer.Boost converter is used in boost circuit,and the output voltage of Boost is controlled by closed loop.The bipolar pulse is generated by the full bridge inverter circuit,and the snubber circuit of the switch is designed.The pulse transformer of amorphous magnetic core is designed,and the calculation method of key parameters is given.A high voltage pulse power supply simulation model of pulse transformer cascade is established.The feasibility of the scheme is verified by simulation analysis.Hardware circuit of high voltage pulse power supply cascaded by amorphous magnetic core pulse transformer has been designed and built,including rectifier filter circuit,Boost circuit,full bridge inverter circuit,switch tube drive circuit,buffer circuit and voltage sampling circuit.The calculation methods of key device parameters have been given.The pulse transformer of a toroidal amorphous core has been wound.Using the DSP as the main controller,the control program of the power supply has been compiled,including the closed loop control program of the Boost circuit,the PWM control program of the full bridge inverter circuit,the voltage sampling program and the serial communication program,and the parameters of the high voltage pulse power supply can be set through the serial port.The high-voltage pulse power source prototype has been achieved,and experiments have been carried out under laboratory conditions.The experiment has achieved the expected results...