共悬浮绕组式无轴承开关磁阻电机最小能耗控制策略

Minimum Energy Consumption Control Strategy of Bearingless Switched Reluctance MotorWith Sharing Suspension Windings

针对无轴承开关磁阻电机在传统单相导通悬浮控制策略中存在径向力缺失区间、双相导通悬浮控制策略中系统能耗大等问题,该文研究双相导通模式下的最小能耗控制策略。以电机系统能耗最小为电流分配优化目标,根据旋转与悬浮控制需求去分配主导通相、副导通相与悬浮相的电流。探究在不同控制需求下能耗随相电流分配变化的规律,推导最小能耗数学模型,并将其应用于控制系统中;通过仿真与实验验证该文提出的控制策略在提高电机悬浮性能的同时,可降低系统的能耗,该控制策略具有较好的实用价值。

To address the issue of missing interval in traditional single-phase conduction suspension control strategy and high system energy consumption in double-phase conduction suspension control strategy,a minimum energy consumption control strategy in the double-phase conduction mode is proposed.The objective is to optimize the current distribution to minimize energy consumption of the motor drive system,with the currents of the main conduction phase,auxiliary conduction phase,and suspension phase distributed according to the rotation and suspension control requirements.The relationship between energy consumption and phase current distribution under different control requirements is explored,and a minimum energy consumption mathematical model is obtained and applied to the control system.Simulation and experimental verification results demonstrate improved suspension performance and reduced energy consumption,indicating that this control strategy has practical value.