Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors (arrangements for starting electric motors H02P1/00; arrangements for stopping or slowing electric motors H02P3/00; control of motors that can be connected to two or more different electric power supplies H02P4/00; regulating or controlling the speed or torque of two or more electric motors H02P5/00; vector control H02P21/00)

Child Classifications

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• H02P 29/0016
• H02P 29/02 Providing protection against overload without automatic interruption of supply (protection against faults of stepper motors H02P8/36)
• H02P 29/04 by means of a separate brake
• H02P 29/10 for preventing overspeed or under speed
• H02P 29/20 for controlling one motor used for different sequential operations
• H02P 29/40 Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load
• H02P 29/50 Reduction of harmonics
• H02P 29/60 Controlling or determining the temperature of the motor or of the drive (H02P29/02 takes precedence)