This article presents an evaluation of simplified model considering only $q$ -axis current effects on parameters for rapid identification and control development of interior permanent magnet (IPM) traction machines. It is shown that the identification of the simplified model is simple and easy to be implemented. It is demonstrated that in the low-speed region with maximum torque per ampere (MTPA) control, due to the flat segment around the MTPA point of the relevant constant torque over current magnitude curve, MTPA operation could still be achieved using the simplified model. It is shown that in the field-weakening (FW) region where the effects of parameter mismatch resulting in a higher-than-expected voltage magnitude could be mitigated via a voltage feedback (FB) loop, torque–speed performance still could be obtained with a reduction in the torque–speed boundary together with up to 1.5% machine efficiency difference. Thus, the simplified model could be considered at the earlier stage of identification and control development as a rapid solution to quickly test and validate IPM machine design/manufacture when the validation of the complex model considering the effects of both dq -axis currents is highly time-consuming. The simplified model is validated via measurement on a high-speed high-power (15 000 r/min, 120 kW) IPM traction machine.

中文翻译：

---

IPM牵引机快速识别与控制开发的简化模型评估

本文提出了一种仅考虑简化模型的评估 $ q $ 轴电流对参数的影响，以快速识别和控制内部永磁体（IPM）牵引机的开发。结果表明，简化模型的识别简单易行。结果表明，在具有最大每安培转矩（MTPA）控制的低速区域中，由于相关恒转矩在电流幅值曲线上MTPA点周围的平坦段，仍可以使用简化模型来实现MTPA操作。结果表明，在磁场弱化（FW）区域中，可以通过电压反馈（FB）回路减轻参数失配导致的电压幅度高于预期的影响，仍然可以通过以下方式获得转矩-速度性能：减小了转矩-速度边界，并提高了1.5％的机器效率差。dq 轴电流非常耗时。通过在高速大功率（15000 r / min，120 kW）IPM牵引机上进行测量，验证了简化模型的有效性。