1) Rectifier Filter Module: Converts AC power from the power grid into a smoother DC voltage for the converter. 2) Three-phase Bridge Inverter Module: Transforms DC voltage into AC power. The power stage utilizes an intelligent IPM power module, featuring simple circuitry and high reliability. 3) LC Filter Module: Filters out interference and unnecessary signals, ensuring the output signal is a standard sine wave. Aviation Power
(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 switching tubes to maintain stable output voltage. Additionally, the module completes programmable adjustment of input voltage and current signals through 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 detect real-time changes in line voltage and phase current, necessitating three voltage detection circuits and three current detection circuits. All detection signals are isolated through voltage followers and then input into the A/D channels of the TMS320F28335. (6) Auxiliary Power Supply Module: Provides a DC power supply that meets certain technical requirements for the control circuit, ensuring stable and reliable system operation. 400HZ power supply
