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Electrical AdjustableSpeed Drives
AdjustableVoltage MotorGenerator Drives
8 other sections not shown
adjustable-speed drive applications armature armature current arrangement base speed basic belt capacity cent changes characteristics circuit clutch constant Corp cost courtesy curves dc motor decrease differential disk DRlVES dynamic braking eddy-current coupling efficiency elec electric motor electronic amplifier electronic drives employed field excitation Field Resistance flanges fractional full load horsepower hydraulic increase induction motor input speed justment limited low speeds machine magnetic amplifier manual maximum speed mechanical ment motor field motor speed motor-generator obtained output shaft output speed Photo planetary gear pressure pulley pumps and motors rated rectifier reduced reduction drive repulsion motor resistance resistor reversing rheostat rotating rotor series motor shown in Fig shunt motor slip speed adjustment speed control speed range speed ratios speed regulation speed variation stationary tion torque transmission trol tube typical units usually V-belt valve variable variable-pitch sheaves vary voltage winding zero