【摘要】 以开发通用的电机电磁场瞬态仿真软件为目的,将一种新的电力电子开关器件的数学模型,应用于耦合电力电子驱动电路的电机电磁场有限元瞬态仿真之中。建立了理想开关元件各自的单一伏安特性方程,用一个方程,描述开关元件通断的不同状态。这样,只需按一个拓扑结构建立电路方程,简便易行,易于编写通用软件;能自动判断开关状态,不用特殊处理。通过对一台永磁无刷直流电机进行瞬态仿真,并与试验结果相对比,验证了单一方程描述理想开关元件的场路耦合电机瞬态仿真方法的正确性。更多还原

【Abstract】 In this paper,for developing an all-purpose finite element analysis package of electrical machine electro-magnetic fields,an improved coupled field-circuit dynamic simulation of electrical machines is presented.In this coupled simulation,Characteristics of ideal diode, voltage controlled switch, current controlled switch and so on are expressed respectively with only one equation. The single equation can be applied to describe both the switch turning on and turning off. By this method, the equations of power electronic drive circuit can be constructed with only one circuit topological structure.The switch states can be detected automatically, thus the versatility of the simulation is ensured. Comparison between the simulation results of a brushless DC motor and the experimental ones confirms the proposed method.更多还原