Permanent-magnet, direct-drive, starter/alternator machine with weakened flux linkage for constant-power operation over extremely wide speed range
Permanent-magnet, direct-drive, starter/alternator machine with weakened flux linkage for constant-power operation over extremely wide speed range
复制标题
具有弱磁链的永磁、直驱、起动机/交流发电机，可在极宽的速度范围内实现恒功率运行
DOI：
10.1109/ias.2001.955752
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
L. Solero
中科院分区：
文献类型：
--
作者：
F. Caricchi;F. Crescimbini;F. G. Capponi;L. Solero
由于车辆中电力需求的显著增加，正在认真地追求采用组合的直接驱动起动机/交流发电机系统，并且在发动机速度的整个范围内提供高达6 kW的功率的新一代车辆交流发电机很快预期用于连接到42 V总线。表面永磁体（SPM）机器提供了这种未来汽车发电系统所寻求的许多特征，并且由此在其输出电压的控制方面的实质性改进将允许在直接驱动起动器/交流发电机应用中充分利用其吸引人的特性，而不会对机器馈电功率转换器产生显著的不利影响。关于这一点，本文报告了在概念验证轴向磁通永磁电机（AFPM）原型中采用的原始解决方案，以提供随速度减弱的磁链，从而在很宽的速度范围内实现恒功率运行。介绍和描述了所使用的原理，包括从概念验证机器原型中获得的设计尺寸和实验数据。
As consequence of the considerable increase of the electrical power demand in vehicles, the adoption of a combined direct-drive starter/alternator system is being seriously pursued and a new generation of vehicle alternators delivering power up to 6 kW over the entire range of the engine speed is soon expected for use with connection to a 42 V bus. The surface permanent magnet (SPM) machines offer many of the features sought for such future automotive power generation systems, and thereby a substantial improvement in the control of their output voltage would allow the full exploitation of their attractive characteristics in the direct-drive starter/alternator application without significant penalties otherwise resulting on the machine-fed power converter. Concerning that, this paper reports on the original solution adopted in a proof-of-concept axial-flux permanent magnet machine (AFPM) prototype to provide weakening of the flux linkage with speed and thereby achieve constant-power operation over a wide speed range. The principle being utilized is introduced and described, including design dimensions and experimental data taken from the proof-of-concept machine prototype.