CAJ | 학술논문

由于永磁同步电机具有功率密度大、功率因数大、效率高等优点，已在电动汽车驱动技术中占据越来越重要的地位。电动汽车在运行中供电续航能力有限，因此降低电机损耗，提高电机高效范围对电动汽车的运行能力起着至关重要的作用。随着研究的不断深入，电动汽车用永磁电机对效率的要求不仅仅局限于额定负载等几条固定曲线的效率值能够满足设计任务，而是越来越多地要求电机在更宽的区域能够高效率运行。基于这种要求，效率map提供永磁电机在不同转速和负载下的的效率分布情况。在电机设计阶段，效率map可以作为电机设计的重要参考；在运行阶段，效率map能够为负载和转速的合理配合提供参考。
유우영자동보전궤구유공솔밀도대、공솔인수대、효솔고등우점，이재전동기차구동기술중점거월래월중요적지위。전동기차재운행중공전속항능력유한，인차강저전궤손모，제고전궤고효범위대전동기차적운행능력기착지관중요적작용。수착연구적불단심입，전동기차용영자전궤대효솔적요구불부부국한우액정부재등궤조고정곡선적효솔치능구만족설계임무，이시월래월다지요구전궤재경관적구역능구고효솔운행。기우저충요구，효솔map제공영자전궤재불동전속화부재하적적효솔분포정황。재전궤설계계단，효솔map가이작위전궤설계적중요삼고；재운행계단，효솔map능구위부재화전속적합리배합제공삼고。
Since the permanent magnet synchronous motor features with highpower density, high power factor,high ef-ficiency andother advantagesandisdominating a more and more important positionin respect to the driving technologyofelec-tromobile. When running ,the power supply ofelectromobile is limited, so reducing the loss of motor, improving the of ef-fective range of the electromobile motor is important to the operationability. With the deepening of the research, the de-mandof electromobilepermanent magnet synchronous motoris not confinedto that the the efficiency valueof thecurve of re-latedloadof several fixed curve meetthe designed requirements , but increasingly require the motor in wider areas runswith high efficiency . Based on the requirement, the efficiency map provides the distribution of the efficiencyof permanent magnet motor in different rotatingspeed and load . During the motor design stage, efficiency map can be used as impor-tant reference for motor design ; In operation stage, efficiency map can provide reference for reasonable matching of load and rotating speed.