Abstract:With the development of modern technology, inverter power supply is widely used in all walks of life, which puts forward higher requirements for its p...
With the development of modern technology, inverter
power supply is widely used in all walks of life, which puts forward higher requirements for its performance. The traditional inverter power supply is mostly analog control or digital control system. A good inverter power supply voltage output waveform mainly includes high steady-state accuracy and good dynamic performance. At present, the inverter structure and control can obtain a good sinusoidal output voltage waveform, but the effect is not very satisfactory for the waveform with rapid mutation.
The function signal generator is a commonly used device in the education of experimental professors. Can generate waveforms of different frequencies and voltage levels: square wave signal, triangular wave, sine signal waveform. A new DDS technology emerging in recent years, namely direct digital frequency synthesis technology. But they are all small signal waves, have no power output, and cannot carry a certain load.
The proposed multi-function inverter power supply, the main circuit adopts double single-phase full-bridge inverter structure, the output voltage waveform tracks the given reference waveform, has power output, and can carry a certain load. The control adopts hysteresis control with differential link added, and fully realizes digital control.