A motor driving control apparatus , comprising: an inverter section configured to supply a drive current to a winding (u, v, w) provided in a motor ; a winding changeover section configured to select one of a plurality of terminals each defining a number of turns of the winding (u, v, w) to change over the winding between two or more different numbers of turns; and a control section configured to provide an instruction corresponding to one of the numbers of turns to the winding changeover section , wherein the winding changeover section including a plurality of semiconductor switches (SW2, SW1) that are connected to the corresponding terminals and the plurality of semiconductor switches (SW1, SW2) being selectively turned on or off in response to the instruction, the winding (u, v, w) including terminals respectively provided at ends thereof, and at least one terminal at an intermediate position between the terminals , and the inverter section being connected to one of the terminals provided at one of the ends of the winding (u, v, w), and the semiconductor switches (SW2, SW1) of the winding changeover section being connected to the other one of the terminals provided at the other one of the ends of the winding (u, v, w) and to the at least one terminal located at the intermediate position of the winding (u, v, w), characterised in that the plurality of semiconductor switches (SW2, SW1) are different in characteristics indicating conduction loss with respect to the current from one other and in that the semiconductor switch having the smallest conduction loss with respect to the current is turned on, and the other semiconductor switches are turned off, in response to the instruction. an inverter section configured to supply a drive current to a winding (u, v, w) provided in a motor ; a winding changeover section configured to select one of a plurality of terminals each defining a number of turns of the winding (u, v, w) to change over the winding between two or more different numbers of turns; and a control section configured to provide an instruction corresponding to one of the numbers of turns to the winding changeover section , wherein the winding changeover section including a plurality of semiconductor switches (SW2, SW1) that are connected to the corresponding terminals and the plurality of semiconductor switches (SW1, SW2) being selectively turned on or off in response to the instruction, the winding (u, v, w) including terminals respectively provided at ends thereof, and at least one terminal at an intermediate position between the terminals , and the inverter section being connected to one of the terminals provided at one of the ends of the winding (u, v, w), and the semiconductor switches (SW2, SW1) of the winding changeover section being connected to the other one of the terminals provided at the other one of the ends of the winding (u, v, w) and to the at least one terminal located at the intermediate position of the winding (u, v, w), characterised in that the plurality of semiconductor switches (SW2, SW1) are different in characteristics indicating conduction loss with respect to the current from one other and in that the semiconductor switch having the smallest conduction loss with respect to the current is turned on, and the other semiconductor switches are turned off, in response to the instruction. <EOS>