KL9080模块

KL9080

力矩是电机设计及控制中非常核心的一个量，一把书上要么是直接给出方程，要么是从能量转换的角度推导出，要么太粗暴，要么太复杂，都不太容易理解，今天，我们从能量守恒的角度来看一下，希望能减轻一下各位童鞋的负担。

电机，本质是一个能量转换装置，对于电动机来说，就是将电能转换成机械能。在复平面域，计算出的功率称之为复功率，与实数领域直接相乘略有不同，复平面对应的是电压相量与电流相量的内积：

代入电压平衡方程可得：

根据内积的定义  ,这样就可以得到电机进行能量转换时的复功率：

方程的左边就是流入电机的瞬时功率，这个比较好理解，我们着重分析一下方程右边的两项分别代表什么意思。

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