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发明授权
CN105322863B 电动机驱动装置 有权

电动机驱动装置
摘要：
本发明的电动机驱动装置的特征在于，具有：逆变器，其通过多个功率元件的开关动作来基于直流电压生成交流电压；电流检测部，其检测输入到电动机的电流；电流控制部，其根据电流指令和电流检测值来生成电压指令；栅极驱动指令生成部，其以逆变器的输出级的死区宽度为规定的死区宽度的方式生成多个功率元件的驱动指令，该输出级的死区宽度是构成输出级的上臂和下臂的功率元件均截止的期间；栅极驱动电路部，其输出多个功率元件的栅极驱动信号；以及死区宽度估计部，其根据电流指令与电流检测值之差，来估计由于多个功率元件的栅极驱动信号而产生的输出级的死区宽度。
摘要（英）：

A motor drive device includes an inverter for generating an AC voltage from a DC voltage by switching power elements, a current detection unit for detecting a current to be inputted to a motor, a current controller for generating a voltage command from a current command and a current detection value, a gate drive command generator for generating drive commands for the power elements such that a dead time in an output stage, that is a period of time in which both of the power elements for upper and lower arms that compose the output stage of the inverter are turned off, becomes a predetermined value, a gate drive circuit unit for outputting gate drive signals for the power elements, and a dead time estimator for estimating the dead time in the output stage that is produced by the gate drive signals for the power elements.

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