本文从永磁同步电机的基本方程出发，通过对起动和牵入同步过程的分析，提出了永磁同步电机牵入同步判据，计算中考虑了脉动转矩幅值的变化和定子电阻的影响。对电机主要参数变化和负载性质不同时永磁电机牵入同步性能的变化规律进行了较深入的探讨，得出了一些有益的结论。

In this paper, a nonlinear varying-network magnetic circuit (VNMC) modeling method is developed for doubly salient permanent-magnet (DSPM) motors. The method is used to analyze the static characteristics of DSPM motors by specific permeance calculations, in which the interaction between the permanent-magnet field and the armature current field, as well as magnetic saturation, are taken into account. Two newly proposed DSPM motors (12/8-pole and 6/4-pole) are used as examples. There is good agreement between the results of the nonlinear VNMC modeling method and finite-element analysis. Moreover, the nonlinear VNMC method offers the advantage of calculating, effectively and efficiently, the static characteristics of DSPM motors having different dimensions, parameters, and conditions. Finally, the proposed method is verified by experimental testing of a 6/4-pole prototype.

A new split-winding doubly salient permanent magnet (DSPM) motor drive is proposed. This DSPM motor drive offers the advantages of high power density, high efficiency, and wide speed range. The corresponding operation, analysis, implementation, and experimentation are successively presented. Finally, experimental results are used to confirm that the proposed DSPM motor drive offers high efficiency over a wide output power range, exhibits good dynamic performance, and extends the constant-power operation range significantly.

The inductance characteristic of doubly salient permanent magnet (DSPM) motors is the basis of design, analysis, and control of the motor. Due to the nonlinearity and doubly salient structure of the motor, this characteristic is a function of not only the rotor position, but also the strengthening and weakening actions of the armature flux to the permanent magnet (PM) flux, which makes the measurement of inductance difficult. This article proposes new methods for the measurement of the motor inductance for any rotor positions and level of excitation. The methods are applied to the two newly proposed DSPM motors and the results are compared with those obtained by finite element analysis. It is shown that the proposed peak value method can correctly reflect the influence of the strengthening and weakening actions of the armature flux to the PM flux on the inductance of DSPM motors.

：定子永磁型无刷电机是一类永磁体和电枢绕组均位于 定子的新型永磁无刷电机，可方便地对永磁体和电枢绕直接冷却以控制其温度，并易于通过“永磁+电励磁”实现对电机气隙磁场的直接控制，从而获得无刷电机的宽范围调速；凸极转子既无永磁体也无绕组，结构简单可靠，适合高速运行；该电机兼具功率密度高、效率高、容错性能好、控制灵 活等特点。该文介绍了定子永磁型无刷电机的基本结构与工作原理，总结了它们的共性规律和个性差别，对其分析设计方法、控制策略等关键技术进行综述，讨论了多种磁通调节 方案和容错控制策略，分析了该电机系统在电动汽车、飞轮储能、轨道交通等领域应用的可行性和潜力，最后对该电机系统的主要研究方向进行了展望。