Rectifier Filter Module: Converts AC input from the power grid into a DC voltage with minimal ripple for the inverter.
(2) Three-phase Bridge Inverter Module: Converts DC voltage into AC power. The power stage utilizes an intelligent IPM power module, featuring simple circuitry and high reliability. Avionics Power Supply
(3) LC Filter Module: Removes interference and unnecessary signals, ensuring the output signal is a standard sine wave.
(4) Control Circuit Module: After detecting output voltage and current signals, the module generates SPWM control signals based on specific control algorithms and strategies. These signals control the switching of the IPM's switch tubes to maintain stable output voltage. Additionally, it completes programmed adjustment of input voltage and current signals via the SPI interface. The capture unit measures the frequency of the output signal.
(5) Voltage and Current Detection Module: As required, the module needs to monitor real-time changes in line voltage and phase current, necessitating three-way voltage detection and three-way current detection circuits. All detection signals are isolated by voltage followers and then input into the A/D channels of the TMS320F28335.
(6) Auxiliary Power Module: Provides a DC power supply that meets certain technical requirements for the control circuit, ensuring stable and reliable system operation. 400HZ power supply
