This paper presents detailed steps and procedures for the design of a 4-pole, 0.75-hp, 1500-r.p.m. surface-mounted permanent magnet brush-less DC (SPM-BLDC) motor. The motor has been fabricated at the works of a local manufacturer. The parameters of the machine have been analytically evaluated and subsequently compared to the experimentally determined values. Its practical performance on load has been experimentally evaluated in the laboratory and verified against analytical predictions too. Low-cost M45 electrical steel laminations, as used for commercial induction motors (IMs), have been used from considerations of cost and availability. This also enables direct comparison of important parameters (e.g. torque density, power density and efficiency) between the fabricated prototype and commercially available fractional-hp 3-phase and 1-phase IMs of similar rating. This study is significant since electrical motor manufacturers need not change their stator stamping production line for BLDC motor vis-a-vis IM in case of mass production. Such an approach is hardly reported in the available technical literature. Analytical methods adopted include both conventional hand calculations and finite-element analysis using commercially available software package(s). Excellent agreements between analytical and experimental values uphold the correctness of the design process, precision of fabrication and accuracy of experimental investigations.

本文介绍了设计4极，0.75马力，1500 rpm表面安装式永磁无刷直流（SPM-BLDC）电动机的详细步骤和过程。电机是由当地制造商制造的。机器的参数已经过分析评估，随后与实验确定的值进行比较。它在负载下的实际性能已经在实验室中进行了实验评估，并且也已针对分析预测进行了验证。考虑到成本和可用性，已经使用了用于商业感应电动机（IM）的低成本M45电工钢叠片。这样还可以直接比较重要参数（例如，扭矩密度，（功率密度和效率）之间的比较，以及在制造商提供的原型和市售的功率相近的分数马力的三相和1相IM之间。这项研究具有重要意义，因为在批量生产的情况下，电动机制造商无需相对于IM改变其BLDC电动机的定子冲压生产线。现有技术文献中几乎没有报道这种方法。所采用的分析方法包括常规的手工计算和使用市售软件包的有限元分析。分析值和实验值之间的出色协议，维护了设计过程的正确性，制造的精度和实验研究的准确性。这项研究具有重要意义，因为在批量生产的情况下，电动机制造商无需相对于IM改变其BLDC电动机的定子冲压生产线。现有技术文献中几乎没有报道这种方法。所采用的分析方法包括常规的手工计算和使用市售软件包的有限元分析。分析值和实验值之间的出色协议，维护了设计过程的正确性，制造的精度和实验研究的准确性。这项研究具有重要意义，因为在批量生产的情况下，电动机制造商无需相对于IM改变其BLDC电动机的定子冲压生产线。现有技术文献中几乎没有报道这种方法。所采用的分析方法包括常规的手工计算和使用市售软件包的有限元分析。分析值和实验值之间的出色协议，维护了设计过程的正确性，制造的精度和实验研究的准确性。