Arrangements or methods for the control of AC motors characterised by a control method other than vector control

Classification Context

Section:

ELECTRICITY

Class:

GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER

Subclass:

CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS

Child Classifications

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• H02P 23/02 specially adapted for optimising the efficiency at low load
• H02P 23/03 specially adapted for very low speeds
• H02P 23/04 specially adapted for damping motor oscillations, e.g. for reducing hunting
• H02P 23/06 Controlling the motor in four quadrants
• H02P 23/08 Controlling based on slip frequency, e.g. adding slip frequency and speed proportional frequency
• H02P 23/1 Controlling by adding a DC current
• H02P 23/12 Observer control, e.g. using Luenberger observers or Kalman filters
• H02P 23/14 Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
• H02P 23/16 Controlling the angular speed of one shaft
• H02P 23/18 Controlling the angular speed together with angular position or phase
• H02P 23/2 Controlling the acceleration or deceleration
• H02P 23/22 Controlling the speed digitally using a reference oscillator, a speed proportional pulse rate feedback and a digital comparator
• H02P 23/24 Controlling the direction, e.g. clockwise or counterclockwise
• H02P 23/26 Power factor control [PFC]
• H02P 23/28 Controlling the motor by varying the switching frequency of switches connected to a DC supply and the motor phases
• H02P 23/3 Direct torque control [DTC] or field acceleration method [FAM]