Patent ID: 9490735
Filing Date: 2016-11-08
CPC Classification: H02P

Claim Text:
1. A motor driving module, comprising: a motor driving unit configured to control a pulse width modulation (PWM) inverter on the basis of positional information and a control signal, the motor driving unit including a reference voltage generator configured to generate a reference voltage that varies depending on a type of PWM; 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 that varies depending on the type of PWM and the reference voltage corresponding to the type of PWM; 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.