Airborne Ground Testing Of Electrical Equipment Power Source Developed

Aircraft electrical power system is the key part of aircraft system. The performance of airborne Electrical equipment influences the status of aircraft straightly. In order to ensure the status of Aircraft in gear to detect and maintenance airborne Electrical equipment regularity is necessarily.Aim at the detect of airborne electrical equipment, this article develops a power sources,this equipment can simulate various states of aircraft Electrical Power System.The article processes analyse and design of the sources, proposes a circuit of Three-phase Combined inverter, reduces the influence among three-phase in a more excellent way, and makes the function of unattached adjust of the source expediently. The control circuit unit of the source, based upon the AT89C52 single-chip microcomputer and programmed SA4828 chip, is brought to success through hardware and programme design. In order to make the output keep stabilize the article designs closed loop control software of the control circuit. The article proposes a pertinent circuit of two-time low-passed filter of output in the process of filter design and provides the compare of one-time filter and two-time LC filter by the bode diagram.The article finished investigate, analyse, design and debugging of the power source in the process of the graduate design. Experimental results are presented to verify that the three-phase combined power source has excellent electrical capacity, meet the design target absulately, and the thinking of the design is proved logically and feasibly.