A direct current machine is a rotating electric machine that can convert direct current electrical energy into mechanical energy (direct current motor) or mechanical energy into direct current electrical energy (direct current generator). It is a motor that can realize the mutual conversion of direct current electrical energy and mechanical energy. When it works as a motor, it is a direct current motor, which converts electrical energy into mechanical energy; when it works as a generator, it is a direct current generator, which converts mechanical energy into electrical energy . It consists of a stator and a rotor, where the stator generates a magnetic field and the rotor contains the current conductor. The working principle of the direct current motor is based on the Lorentz force, that is, when the current passes through the conductor of the rotor, it interacts with the magnetic field and generates a force to make the rotor rotate.
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