永磁同步电机（Permanent Magnet Synchronous Motor, PMSM）具有负载性能好、效率高等特点，在工业领域已获得广泛关注。有限集模型预测控制在电机驱动系统中具有明显优势，但面对越来越高的工业需求，其在动态响应速度和稳态性能等方面仍有较大提升空间。为提高PMSM控制性能，本文以传统FCS-MPC策略为基础，提出三种有限集模型预测速度控制（Finite Control Set-Model Predictive Speed Control, FCS-MPSC）策略，具体研究内容如下：
1.为改善传统FCS-MPC策略的动态响应速度，本文将转速偏差引入代价函数，采用扩展卡尔曼滤波器（Extended Kalman Filter, EKF）和模型参考自适应系统（Model Reference Adaptive System, MRAS）分别观测负载转矩和转动惯量，得到相对准确的预测模型，构建基于EKF和MRAS的FCS-MPSC策略，提高了PMSM的控制性能。

2.为提高输出电压矢量的准确性，本文利用虚拟电压矢量改进控制集，并引入三矢量控制方法，输出幅值和相角均可变的合成矢量，形成基于三矢量的FCS-MPSC策略，进一步提高PMSM的控制性能。为了降低电压矢量选择过程的遍历计算，本文利用期望电压矢量的角度直接定位最优电压矢量所在扇区，减少计算量，同时对调制区域进行分区，不同区域在控制周期内输出不同数目的电压矢量，构建改进型三矢量FCS-MPSC策略，实现了PMSM的高效控制。

3.为对本文所提出的基于EKF和MRAS的FCS-MPSC策略、基于三矢量的FCS-MPSC策略和改进型三矢量FCS-MPSC策略进行对比验证，采用DSP28335控制芯片搭建了PMSM实验台，分别进行空载启动和突加负载的对比实验。

本文对FCS-MPC策略进行改进，提出了三种性能优越的FCS-MPSC策略，其中改进型三矢量FCS-MPSC策略性能最好，能够有效减少电流脉动、提高动态响应和抗负载性能，更好的满足了PMSM的应用需求。

Permanent magnet synchronous motor (PMSM) has good load performance and high efficiency, and has been widely concerned in the industrial field. Finite control set-model predictive control (FCS-MPC) has obvious advantages in motor drive systems, but for increasingly high industrial demand, its dynamic response speed and steady-state performance still have great space for improvement. In order to improve the control performance of PMSM, based on the traditional FCS-MPC strategy, three finite control set-model predictive speed control (FCS-MPSC) strategies are proposed in this paper. The specific research content is as follows:

1.To improve the dynamic response speed of FCS-MPC strategy of traditional PMSM, the speed deviation is introduced into the cost function. The extended Kalman filter (EKF) and model reference adaptive system (MRAS) are used to observe the load torque and moment of inertia respectively, and a relatively accurate prediction model is obtained. The FCS-MPSC strategy of PMSM based on EKF and MRAS is constructed to improve the control performance of PMSM.
2.To improve the accuracy of the output voltage vector, this paper uses the virtual voltage vector to improve the control set, and introduces the three-vector control method. The synthetic vector with variable output amplitude and phase angle forms a three-vector-based permanent magnet synchronous motor FCS-MPSC strategy, which further improves the control performance of PMSM. To reduce the ergodic calculation in the voltage vector selection process, this paper uses the angle of the expected voltage vector to directly locate the sector where the optimal voltage vector is located to reduce the calculation amount. At the same time, the modulation region is partitioned, and different regions output different number of voltage vectors within the control period. An improved three-vector permanent magnet synchronous motor FCS-MPSC strategy is constructed, realizing the effective control of PMSM.
3.To compare and verify the proposed FCS-MPSC strategy based on EKF and MRAS, the FCS-MPSC strategy based on three vector and the improved three-vector FCS-MPSC strategy, a PMSM experimental platform is built using the DSP28335 control chip, and the comparative experiments of no-load starting and sudden loading are conducted respectively.

In this paper, the FCS-MPC strategy is improved, and three kinds of FCS-MPSC strategies with superior performance are proposed. Among them, the improved three-vector FCS-MPSC strategy has the best performance, which can effectively reduce current pulsation, improve dynamic response and anti-load performance, and better meet the application requirements of PMSM.

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