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【单选题】
关于电力电子器件缓冲电路,表述正确的是 下面哪一个:A.
缓冲电路又称吸收电路，目的是吸收电力电子器件的热量。
B.
缓冲电路又称吸收电路，目的是抑制器件的内因过电压、 du/dt 、过电流和 di/dt ，减小器件的开关损耗。
C.
缓冲电路又称吸收电路，目的是使器件的开关速度变为缓慢。
D.
缓冲电路又称吸收电路，目的是抑制器件内因过电压、过电流，但并没有减小器件的开关损耗。
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