rotor coil การใช้

• Metal brushes and a flat commutator switch power to the rotor coils.
• The turbogenerator contains also a smaller generator producing direct current excitation power for the rotor coil.
• The Fluence Z . E . uses a synchronous electric motor with rotor coil, weighing.
• Sparks are created by the brushes making and breaking circuits through the rotor coils as the brushes cross the insulating gaps between commutator sections.
• This machine can also be run by connecting the stator coils to the grid, and supplying the rotor coils with AC from an inverter.
• Furthermore, the inductance of the rotor coils causes the voltage across each to rise when its circuit is opened, increasing the sparking of the brushes.
• All this is done to minimize magnetic reluctance of the magnetic circuit which the magnetic field created by the rotor coils travels through, something which is important for optimizing these machines.
• There is iron ( usually laminated steel cores made of sheet metal ) between the rotor coils and teeth of iron between the stator coils in addition to black iron behind the stator coils.
• This two facts, in addition to the cheaper price of a permanent magnet motor with respect to a standard DC motor ( as a matter of fact only the rotor coils need to be winded ), are the main reasons why armature controlled motors are widely used.
• The motor controller can sense the rotor's position via Hall effect sensors or similar devices and can precisely control the timing, phase, etc ., of the current in the rotor coils to optimize torque, conserve power, regulate speed, and even apply some braking.
• Process equipment's like automatic coil taping machines, automatic coil spreading machines, modern GVPI plants for stator and rotor impregnation, high precision rotor coil brazing set up, balancing machines to balance rotors at rated speed, coil manipulator for handling stator coils etc are up to renowned global standards.