Efficiency and utilization benefits of five-phase squirrel cage induction and permanent magnet synchronous machines with third harmonic voltage injection

带三次谐波电压注入的五相鼠笼感应和永磁同步电机的效率和利用效益

• 批准号: 512518457
• 负责人: Professor Dr.-Ing. Andreas Binder
• 金额: --
• 依托单位: Institut für Elektrische Energiewandlung
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/512518457?language=en
• 关键词: Efficiency; utilization; benefits; five; phase

Subject of innovation: The objective of this research project is the systematic comparison of pulse width modulation inverter-fed three- and five-phase squirrel cage induction (SCIM) and permanent magnet machines (PMSM) concerning maximum efficiency, torque per total loss ratio and torque per volume at a given temperature rise of the stator winding. Content of the project: The investigation is based on a standard three-phase induction motor (15 kW, 1474 /min, 400 V) and a standard three-phase inverter from well-known manufacturers. For the same mechanical, electrical, thermal and geometrical constraints, a five-phase SCIM and a three- and five-phase PMSM are analytically and numerically designed. The four machines are built and an experimental study shall verify the theoretical results. Preliminary work: Analytical and numerical calculations led to the design of several five-phase SCIMs for an automotive supplier. The benefits and drawbacks of five-phase SCIMs versus PMSMs for the special application of a belt-starter-generator were worked on. Basic findings were published or are in preparation for publication. Objective of the project: As a thorough comparison of three- versus five-phase SCIMs and PMSMs concerning achievable efficiency and motor utilization is still missing, a theoretical and experimental comparison at identical active mass will highlight the possible benefit of an increase of phases from three to five and of the third harmonic injection. The following questions shall be answered by the proposed research project: a) At rated operation: How does the torque per total loss ratio change by the increase of phases from three to five? Do five-phase machines operate more efficient than three-phase machines? How much does the efficiency improve if third harmonic injection is applied? b) Can the maximum achievable torque (overload capability) at the inverter current limit be increased by an increase of phases from three to five? c) How is the rotor topology influenced by the increase of phases from three to five? The number of rotor bars and the skewing angle shall be analyzed for the SCIM. The magnet arrangement (buried, surface, V-shape) shall be analyzed for the PMSM. d) How is the performance in terms of maximum torque and efficiency influenced in field weakening range by an increase of phases from three to five? e) How is the acoustic noise, the vibration and the torque ripple influenced by the increase of phases from three to five? A final recommendation for the use of three- or five-phase machines and general rules for design and application of third harmonic voltage injection shall be the final output of the project. General rules on the benefits of five-phase SCIMs and PMSMs will be set up. These results shall help to judge if the increased system complexity is worth the benefits of five-phase variable speed drives.

创新主题：该研究项目的目标是对脉宽调制逆变器供电的三相和五相鼠笼感应电机 (SCIM) 和永磁电机 (PMSM) 在最大效率、总损耗扭矩比和在给定定子绕组的给定温升下单位体积的扭矩。项目内容：调查基于知名厂商的标准三相感应电机（15kW、1474/min、400V）和标准三相逆变器。对于相同的机械、电气、热和几何约束，对五相 SCIM 以及三相和五相 PMSM 进行了分析和数值设计。建造了四台机器并进行实验研究以验证理论结果。初步工作：通过分析和数值计算，为一家汽车供应商设计了多个五相 SCIM。针对皮带启动发电机的特殊应用，研究了五相 SCIM 与 PMSM 的优缺点。基本研究结果已发表或正在准备发表。该项目的目标：由于仍然缺乏对三相 SCIM 和 PMSM 在可实现效率和电机利用率方面与五相 SCIM 和 PMSM 进行彻底比较，因此在相同活动质量下进行理论和实验比较将突出显示从三相增加相数可能带来的好处到五和三次谐波注入。拟议的研究项目应回答以下问题： a) 在额定运行时：随着相数从三相增加到五相，转矩/总损耗比如何变化？五相电机比三相电机运行效率更高吗？如果采用三次谐波注入，效率会提高多少？ b) 逆变器电流限制下的最大可实现扭矩（过载能力）是否可以通过将相数从三相增加到五相来增加？ c) 相数从三相增加到五相对转子拓扑有何影响？ SCIM 需分析转子导条的数量和斜角。应分析 PMSM 的磁体排列（埋入式、表面式、V 形）。 d) 通过将相数从三相增加到五相，在弱磁范围内最大扭矩和效率方面的性能有何影响？ e) 相数从三相增加到五相对噪声、振动和扭矩脉动有何影响？使用三相或五相电机的最终建议以及三次谐波电压注入的设计和应用的一般规则应是项目的最终输出。将制定有关五相 SCIM 和 PMSM 优点的一般规则。这些结果将有助于判断增加的系统复杂性是否值得五相变速驱动器的好处。