The invention discloses a permanent magnet electric transmission system for an off-road vehicle. The system comprises: a permanent magnet generator coaxially connected with a diesel engine and used for outputting three-phase alternating current; a main rectifier connected with the permanent magnet motor through an isolating switch and used for receiving the three-phase alternating current, converting the three-phase alternating current into direct current electric energy and outputting the direct current electric energy; a main transmission inverter connected with the main rectifier and used for converting the direct-current electric energy output by the main rectifier into a variable-voltage variable-frequency power supply and outputting the variable-voltage variable-frequency power supply; and a permanent magnet traction motor connected with the main transmission inverter and used for receiving the variable-voltage variable-frequency power supply output by the main transmission inverter and driving off-road vehicle hubs to rotate under the driving of the variable-voltage variable-frequency power supply. According to the driving system, the permanent magnet generator and the permanent magnet motor are adopted, so that the efficiency is improved; and an auxiliary converter sharing a direct-current bus with the main transmission inverter is used for driving an alternating-current fan, the air volume is smooth and adjustable, and braking energy is utilized to the maximum extent.
本发明公开了一种用于非公路车辆的永磁电传动系统,其包括:永磁发电机,其与柴油机同轴连接,输出三相交流电;主整流器,其通过隔离开关与永磁电机连接,用以接收三相交流电,并将三相交流电转换为直流电能进行输出;主传动逆变器,其与主整流器连接,用以将主整流器输出的直流电能变换为变压变频电源进行输出;永磁牵引电机,其与主传动逆变器连接,用以接收主传动逆变器输出的变压变频电源,在变压变频电源的驱动下,带动非公路车辆轮毂旋转。本发明提出的驱动系统,采用永磁发电机和永磁电动机,提高了效率;采用与主传动逆变器共直流母线的辅助变流器,用来驱动交流风机,风量平滑可调,并最大程度利用制动能量。
Permanent magnet electric transmission system for off-road vehicle
用于非公路车辆的永磁电传动系统
2020-08-11
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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