Motor driving module and brushless DC motor system
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United States of America Patent
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-
Nov 8, 2016
Grant Date -
Jun 12, 2014
app pub date -
Jun 5, 2013
filing date -
Dec 10, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A motor driving module is provided which includes a motor driving unit configured to control a PWM inverter on the basis of positional information and a control signal; a PWM inverter configured to output three-phase voltages on the basis of DC power according to control of the motor driving unit; a phase voltage estimating unit configured to output three-phase estimated voltages on the basis of the positional information, the DC power, and a voltage modulation index; and a position detecting unit configured to output the positional information on the basis of the three-phase estimated voltages, wherein the positional information is on an external motor that operates on the basis of the three-phase voltages.
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