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Control and design for efficiency improvement of permanent-magnet synchronous motor drives in household appliances

机译：家用电器中永磁同步电动机驱动器效率提高的控制和设计

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摘要

This paper deals with some aspects of efficiency improvement of PMSMD (Permanent Magnet Synchronous Motor Drives). Particularly two aspects are focused: the control algorithm for the PMSMD, which allows to reduce the power losses of the electric drive without penalty on its dynamic performances and the optimization of an IPMSM (Interior Permanent Magnet Synchronous Motor) rotor configuration capable to increase the performances in terms of shaft torque production, limiting at the same time the rotor leakage flux. The loss minimization algorithm is here briefly analysed, a test bed for experimental validation is presented and the data are analysed. Experimental tests have been performed aiming to validate the actual implementation. The main results of these tests confirm that the dynamic performances of the drive are maintained, and enhancement up to 3.5% of the efficiency can be reached in comparison to the PMSM drive equipped with a more traditional control strategy. Moreover an 1PMSM rotor design is proposed in order to improve more and more the PMSMD efficiency. As a matter of fact it allows a reduction in PM material quantity of about 25% compared to a tangential IPMSM one with the same dimension and weight, together with an increase of the motoring torque of about 50%. Some simulation carried out by using a FEM software and a comparative analysis with a traditional IPMSMs rotor configuration shows that a significant improvement of the PMSMD can be achieved with limited changes in the motor geometry and with the choice of a suited control algorithm.
机译：本文讨论了PMSMD（永磁同步电动机驱动器）效率提高的某些方面。特别着重于两个方面：PMSMD的控制算法，该算法可减少电驱动器的功率损耗而不会影响其动态性能，而IPMSM（内部永磁同步电动机）转子配置的优化可提高性能在产生轴转矩方面，同时限制了转子的漏磁通。这里简要分析了损耗最小化算法，提出了用于实验验证的测试平台，并对数据进行了分析。已经进行了旨在验证实际实施的实验测试。这些测试的主要结果证实了该驱动器的动态性能得以保持，并且与配备了更传统控制策略的PMSM驱动器相比，可以提高高达3.5％的效率。此外，提出了一种1PMSM转子设计，以便越来越多地提高PMSMD效率。实际上，与具有相同尺寸和重量的切向IPMSM相比，它可以将PM材料的数量减少约25％，并增加约50％的电动扭矩。使用FEM软件进行的一些仿真以及与传统IPMSM转子配置的比较分析表明，通过有限的电动机几何形状变化和选择合适的控制算法，可以实现PMSMD的显着改善。

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