| CPC H02P 27/085 (2013.01) [H02P 23/24 (2016.02)] | 4 Claims |
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1. A motor system comprising:
a first terminal and a second terminal to each of which a single-phase AC is input;
a third terminal;
an AC/DC converter that is connected to the first terminal and the second terminal and converts the single-phase AC into a DC;
an inverter configured to convert the DC into a three-phase AC by performing pulse width modulation control using a pulse width modulation signal;
a winding wire to which the three-phase AC is supplied;
a rotor configured to rotate by a magnetic field generated in the winding wire;
a controller configured to output the pulse width modulation signal to the inverter; and
a detection circuit that is connected to the third terminal, wherein
in a state where the single-phase AC is input to the first terminal and the second terminal, the detection circuit (1) outputs a first detection signal when the third terminal is short-circuited to the first terminal, (2) outputs a second detection signal when the third terminal is short-circuited to the second terminal, and (3) outputs a third detection signal when the third terminal is in an open state, and
the controller outputs the pulse width modulation signal, the rotor being in a first rotation state when the detection circuit outputs the first detection signal, the rotor being in a second rotation state when the detection circuit outputs the second detection signal, and the rotor being in a third rotation state when the detection circuit outputs the third detection signal.
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