Schematic diagram of the working principle of DC brush motor

Schematic diagram of the working principle of DC brush motor

Shown is a schematic diagram of the working principle of a DC brushed motor . Figure 845① shows the state of 0-600. At this time, the positive electrode of the power supply
is added to the U end of the coil through the brush , and flows out from U' through the U coil through the negative electrode of the brush to form a loop. Since the coil is in the magnetic field formed by the stator poles,
it is forced by the magnetic field and rotates clockwise. At this time, the coils V and W are connected in series, and the current in them is only 1/2 of the current in the U coil.
    Figure 8-45② shows the state of 6Qo~1200. At this time, the positive electrode of the power supply is added to the coil W' terminal through the brush. After passing through the coil W, it flows out from the line terminal W terminal
and then flows out through the negative electrode of the brush to form a loop. The main current flows in coil W.
    As shown in Figure 8-45, ③ is in the state of 120a-1800. The entire power supply goes through the brush and coil VIv 7 to the negative pole of the power supply.
    In the figure, ④~@ is the state when the rotor rotates 1800~3600 angles. In this way, a cycle of cycles is just completed.