Based On The Research And Application Of Dsp High-voltage Inverter

Power electronics, which is for implementing power conversion by applying electric power semiconductor under the control of the specified information, is vigorously developing and becomes a discipline that combines various technologies, is such as electronics, electric power, cybernetics, etc. It is very important to research this discipline, because it has been widely used in electronics industry, electronic power, machine, metallurgy, transportation.As a branch of power electronics, inverter technology has been applied widely. It is very necessary to study the inverter used the selective harmonic elimination(SHE) technique because their harmonic do great harm to electrical network, electrical equipments and communication networks. This kind of PWM technique can realize the harmonic's selective eliminated, it has low switch frequency, high use ratio of voltage. The wave of eliminated has low magnitude. So it has a wonderful application prospect.The mathematic model of harmonic elimination inverter is a non-linear exceeding equation , I apply to Newton algorithm to solve non-linear exceeding equation. And through analyzing difficult main-circuit , I select three-level NPC inverter, and I design main-circuit . The control unit based on DSP is designed .