水电能源科学

随着新能源占比的提高，电力系统的惯量支撑、电压支撑以及调频能力明显减弱。同步调相机—飞轮储能系统的研发，对于提高新能源场站的调节能力、增强新型电力系统的稳定性具有重要意义。简要阐述了用于同步调相机—飞轮储能系统的磁齿轮调速器的工作原理和不同的运行状态，着重对其电磁结构进行了优化设计。建立了磁齿轮调速器的电磁有限元模型，通过计算和分析空载漏磁系数选定了V形永磁体内转子的磁障形状，进而采用遗传算法，在一定的永磁体用量和定子槽面积条件下，对V形永磁体和定子槽的形状参数及调制环的极弧系数进行了多目标优化，并分析了目标性能与结构形状参数的相关性。优化设计和相关性分析结果从结构设计上为磁齿轮调速器转矩和效率性能的提升指明了方向。

With the increasing proportion of new energy, the inertia support, voltage support, and frequency regulation ability are obviously weakened in current power system. The development of energy storage system with synchronous condenser and flywheel(ESSSCF) is of great significance to improve the regulation capability of new energy power generation and enhance the stability of new power systems. This article briefly describes the principle and different operation states of the magnetic-geared speed regulator(MGSR) for ESSSCF, and focuses on the design optimization of its electromagnetic structure. The electromagnetic finite element model of the MGSR is established. The shape of the flux barrier is selected for the inner rotor with V-shaped permanent magnet by calculating and analyzing the no-load leakage flux factor. The geometric parameters of the V-shaped permanent magnets and stator slots and the pole-arc coefficient of the modulating ring are optimized for multiple objectives, respectively, using genetic algorithm, under the conditions of a constant amount of permanent magnet and a constant area of stator slot. In addition, the correlation of the target performances with the geometric parameters is analyzed. The results of the design optimization and correlation analysis can direct the structural design of the magnetic-geared speed regulator for improvement of the torque and efficiency performances.