The invention relates to the technical field of aviation electric propulsion power systems, and provides an electric energy conversion circuit of an aviation electric propulsion power system. The electric energy conversion circuit comprises a DC power distribution bus; a direct current/direct current boosting transformer of which the input end is coupled to the direct current power distribution bus, and which is used for boosting a first direct current voltage to a second direct current voltage; a direct-current/alternating-current step-down inverter of which the input end is coupled to the output end of the direct-current/direct-current boosting transformer, and which is used for converting the second direct-current voltage into an alternating current; and a permanent magnet motor which is coupled to the alternating current and is used for converting electric energy into mechanical energy to drive a propeller to work, wherein the AC voltage is greater than or equal to the first DC voltage. The direct current/direct current boosting transformer comprises N stages of conversion structures, N is larger than or equal to 1 and smaller than or equal to 3, N belongs to Z, and the first-stage conversion structure is formed by two first-class conversion units in a two-phase staggered parallel connection manner. According to the present invention, higher power can be provided for the permanent magnet motor of the aviation electric propulsion system, and the power-to-weight ratio cannot be reduced.

    本发明发明涉及航空电推进动力系统技术领域,提供了一种航空电推进动力系统的电能变换电路,包括:直流配电母线;直流/直流升压变压器,其输入端耦接于直流配电母线,用以将第一直流电压提升至第二直流电压;直流/交流降压逆变器,其输入端耦接于直流/直流升压变压器的输出端,用以将第二直流电压转化成交流电;永磁电机,耦接于交流电,用以将电能转化成机械能,驱动螺旋桨工作;交流电压大于或等于第一直流电压;直流/直流升压变压器包含N级变换结构,1≤N≤3且N∈Z,其中的一级变换结构由两个第一类变换单元以两相交错并联的方式构成;能够为航空电推动力系统的永磁电机提供更大的功率,且不会降低功重比。


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    Title :

    Electric energy conversion circuit of aviation electric propulsion power system


    Additional title:

    一种航空电推进动力系统的电能变换电路


    Contributors:
    LI MING (author) / HU ZHIQIANG (author) / WANG SHAOBO (author) / XIAO GANG (author)

    Publication date :

    2021-03-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern




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