水轮发电机多物理场综合优化设计

Integrated Optimization Design of Hydro Generator Based on Multi-Physics Field

以水轮发电机为典型复杂产品研究实例,深入分析了电机稳态工作时多物理场的相互耦合作用,对电机的电磁场、通风散热流-固热耦合场进行了数值分析和计算,计算结果切实有效.在此基础上,从系统的角度出发,通过对电机设计过程中电磁、通风、散热学科进行分析,确立了学科间的参数耦合关系,建立了电机综合优化设计模型,采用集成优化方法MDF对此模型进行了优化求解,优化后的设计方案通过数值计算进行了有效验证,初步实现了电机综合优化设计,进而为多领域复杂产品的综合优化做出了有益探索.

As a representative complex product,a number of coupling relationships exist among hydro generator’s electromagnetic field（EMF）,flow field and temperature field when it works.In this paper,these complicated coupling interactions were thoroughly analyzed and numerical analysis and calculations for EMF,solid-fluid thermally coupled fields were executed effectively.On this basis an integrated optimization model was formed through carrying out such disciplinary analysis as electromagnetic design,ventilation and cooling design sequentially and then identifying inter-disciplinary coupling parameters.In the end MDF formulation was adopted to get optimized parameter values to for-mulate a new design.This new design is tested by numerical simulations.This practice is a good approach for realizing a good comprehensive design of hydro generator and other complex products.