NOVEL ELECTRIC MACHINE DESIGN TOPOLOGIES FOR ELECTRIFIED TRANSPORTATION

近年来，电气化运输取得了长足的进步，包括空中、海上和地面应用。这些系统的核心是电机。牵引和辅助设备采用的机器技术类型因制造商和应用而异。感应、永磁和开关磁阻都已被采用，同步磁阻受到严重关注。功率密度和可靠性是船舶和飞机应用的关键问题。 该提案将涉及电气化运输机器设计的三个重要领域：a）使用新材料和制造技术的电机新拓扑结构的研究，B）可变磁通电机的详细设计，牵引的新候选者和c）开发一种新型磁芯损耗测试仪，用于测量组装后电机的损耗。 在a）中，将研究永磁体的新型冷喷涂制造，使得任意形状和尺寸可以被印刷到电机上或电机中。三维磁通路径和新颖的形状，以减少齿槽转矩是一些领域有待探索。这相当于机器部件的3D打印。PI还提出了一个新的概念，在可变磁通机和许多进步，这个最初的想法提出。在B）中，探索了开发可变磁通和常规PMSM之间的混合的想法。该想法是保留利用外部脉冲磁化和退磁磁体的能力，从而提供通量控制，同时减轻与低矫顽力相关联的一些缺点，特别是利用电枢通量的无意退磁。PI在测量和计算机器中的磁芯损耗方面做了大量工作，c）解决了已经组装的机器中的损耗的关键问题，而不是叠片。PI以前所有关于磁芯损耗的工作都是关于叠片的。然而，显着的性质变化可能会发生作为制造的结果，因此提出了一种新的测试仪来确定这些损失。 PI培训的HQP都被吸收到当地行业，政府实验室或世界各地的学术职位。当地工业的就业尤其对加拿大有直接的好处。电气化交通领域对加拿大至关重要，是康考迪亚大学和魁北克省愿景的一部分。

There has been considerable progress in electrified transportation in recent years, including air, marine and ground applications. The heart of these systems is the electrical machine. The types of machine technologies adopted for traction and auxiliaries varies considerably by manufacturer and application. Induction, permanent magnet and switched reluctance have all been adopted with the synchronous reluctance receiving serious attention. Power density and reliability are key issues for marine and aircraft applications. The proposal will address three important areas of machine design for electrified transportation: a) Investigation of new topologies of electrical machines using novel materials and manufacturing techniques, b) detailed design of the variable flux machine, a new candidate for traction and c) the development of a novel core loss tester to measure the losses of electrical machines after assembly. In a) novel cold spray manufacturing of permanent magnets will be investigated so that arbitrary shapes and sizes may be printed onto or into an electrical machine. 3-D flux paths and novel shapes to reduce cogging torque are some of the areas to be explored. This equates to 3-D printing of parts of the machine. The PI also proposed a new concept in variable flux machines and numerous advances to this initial idea are proposed. In b) the idea of developing a hybrid between a variable flux and regular PMSM is explored. The idea is to retain the ability to magnetize and demagnetize the magnet with an external pulse, thus providing flux control while alleviating some of the drawbacks associated with the low coercive force, in particular inadvertent demagnetization with armature flux. The PI has done considerable work in the measurements and calculation of core losses in machines and c) addresses the key question of losses in a machine that has already been assembled as opposed to the laminations. All the previous works on core losses by the PI have been on laminations. However significant changes in properties can occur as a result of manufacturing and hence a novel tester is proposed to determine these losses. The HQP trained by the PI have all been absorbed into local industry, government laboratories or academic positions around the world. The employment by local industry in particular has a direct benefit to Canada. The area of electrified transportation in particular is of vital importance to Canada and is part of the vision of Concordia University and Québec.