先进的MCU固件锚复杂堆栈复杂的磁场定向控制电机的设计

　　先进的MCU固件锚复杂堆栈复杂的磁场定向控制电机的设计

　　永磁同步电机（PMSM）在满足要求的电机控制应用方面的效率、响应能力和生命周期成本方面都有显著优势。不同于传统的刷式电机，永磁同步电机电子换向电机（ECM）需要高集成微控制器能够执行复杂的磁场定向控制（FOC）算法和提供精确的电机控制信号需要达到最大扭矩。

　　利用合适的电机控制软件库，工程师可以更容易地利用FOC PMSM使用来自领先的MCU厂商包括飞思卡尔半导体芯片技术，恩智浦半导体，意法半导体的MCU专业版本的优势，德克萨斯文书，其中。

　　在PMSMs，所产生的磁场在定子绕组中的多个连续旋转永磁转子。通过保持从每个定子绕组产生的磁场和转子中的永磁体之间的90°相位，电子换向控制逻辑可以实现电机中的最大转矩。矢量控制，也被称为矢量控制，提供了一种方法，通过提供高扭矩，即使在低转速下，而快速响应动态变化的负载保持最佳的相位关系的定子和转子之间，如在洗衣机。

　　FOC approach

　　FOC continuously commutates the PMSM with sine waves to deliver high torque with little torque ripple. As a result， FOC-driven PMSMs run with reduced mechanical oscillations， outperforming trapezoidal or even sine-wave-driven brushless DC （BLDC） motors — resulting in quieter appliances. Furthermore， FOC-driven PMSMs are highly efficient， thanks to their use of permanent magnets， making them increasingly attractive as energy costs continue to climb — according to the U.S. Department of Energy， kitchen and laundry appliances account for about one-third of household electricity consumption. At the same time， the availability of sensorless methods for ascertaining rotor position further reduces component and lifecycle costs. This opens door to PMSM applications in more demanding compressor and pump designs， such as household， commercial， and automotive applications where sensors cannot easily be used.