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

Child Classifications

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• H02P 23/0004 +6 CPC CPC only CPC only
• H02P 23/0077 CPC only CPC only
• H02P 23/0086 +1 CPC CPC only CPC only
• H02P 23/02 specially adapted for optimising the efficiency at low load since 2006 IPC+CPC Available in IPC and CPC
• H02P 23/03 specially adapted for very low speeds since 2006 IPC+CPC Available in IPC and CPC
• H02P 23/04 specially adapted for damping motor oscillations, e.g. for reducing hunting since 2006 IPC+CPC Available in IPC and CPC
• H02P 23/06 Controlling the motor in four quadrants since 2006 IPC+CPC Available in IPC and CPC
• H02P 23/08 Controlling based on slip frequency, e.g. adding slip frequency and speed proportional frequency since 2006 IPC+CPC Available in IPC and CPC
• H02P 23/10 Controlling by adding a DC current since 2006 IPC+CPC Available in IPC and CPC
• H02P 23/12 Observer control, e.g. using Luenberger observers or Kalman filters since 2006 IPC+CPC Available in IPC and CPC
• H02P 23/14 Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage since 2006 IPC+CPC Available in IPC and CPC
• H02P 23/16 Controlling the angular speed of one shaft (H02P23/18 takes precedence) since 2016 IPC+CPC Available in IPC and CPC
• H02P 23/18 Controlling the angular speed together with angular position or phase since 2016 +2 CPC IPC+CPC Available in IPC and CPC
• H02P 23/20 Controlling the acceleration or deceleration since 2016 IPC+CPC Available in IPC and CPC
• H02P 23/22 Controlling the speed digitally using a reference oscillator, a speed proportional pulse rate feedback and a digital comparator since 2016 IPC+CPC Available in IPC and CPC
• H02P 23/24 Controlling the direction, e.g. clockwise or counterclockwise since 2016 IPC+CPC Available in IPC and CPC
• H02P 23/26 Power factor control [PFC] since 2016 IPC+CPC Available in IPC and CPC
• H02P 23/28 Controlling the motor by varying the switching frequency of switches connected to a DC supply and the motor phases since 2016 IPC+CPC Available in IPC and CPC
• H02P 23/30 Direct torque control [DTC] or field acceleration method [FAM] since 2016 IPC+CPC Available in IPC and CPC