非正弦周期电流信号按照傅里叶级数展开为多项正弦分量的线性叠加，这些正弦分量中频率最低的分量的频率与非正弦周期电流信号的频率相同，称为基波电流。
摘要:基波电流(fundamental current)将非正弦周期电流以傅立叶级数形式表征，其中序数为1 的分量，即和原非正弦周期电流同频率的正弦电流分量。
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发电机只能供给基波电流。
The generators will supply the fundamental component of the current.
这种脉动转矩的频率为基波电流频率的六倍。
Frequency of this pulsating torque is six times as high as that of the fundamental current.
它检测一次侧基波电流并用逆变器产生多个基波补偿电流注入二次侧的多绕组中。
The fundamental component of the primary windings is detected and tracked so as to produce multiple compensation currents, which are injected to the multiple secondary windings.
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