Software Design of the Upper Computer of Soft Switching Inverter System Based on Virtual Instrument Technology

Abstract

In the soft switch inverter system, the core part is the lower computer of the main chip with the TMS320F28335 DSP. In order for the operator to issue the command control system operation and intuitively reflect the operating performance of the system, this paper applies virtual instrument technology to soft switch inverter system and designs the software of the upper computer of soft switch inverter system with the help of the powerful graphics control of virtual instrument. The upper computer and the lower computer realize information interaction through CAN communication. On the upper computer, the motor operation status is displayed using control software written by Lah/Windows CVI. The upper computer sends instructions such as rotation speed setting according to the system’s needs. Through experiments, the correctness and reliability of the upper computer software are verified.