Network optimization information:

Place ABCD's direct-acting solenoid valve closing coil in magnetic field B and rotate about the xy axis. When the magnetic field is rotated clockwise, the closed coil undergoes different magnetic fluxes, resulting in induced electromotive force and thus induced current (Faraday's Law). According to Lenz law, solenoid valve direct moving solenoid valve direct moving current direction is: the role of the induction current is always to prevent its generation. Thus, each conductor is subjected to a Lorentz force F, and it moves in the opposite direction to the induced magnetic field.

A simple way to determine the direction of each force is to use the three fingers of the right hand to determine the direction (the action of the magnetic field on the current causes the thumb to be in the direction of the induced magnetic field, while the index finger points in the direction of the force). Place the middle finger in position to sense the current. In this way, the closed coil is subjected to a torque so that it rotates in the same direction as the inductor's magnetic field, which is the rotating magnetic field. The dynamic torque generated by the closed-loop rotation is balanced with the load torque.

Generation of rotating magnetic field: three-phase AC coils are 120 degrees apart, and each group of coils is powered by a three-phase AC power supply.