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| Number | Title | Issue Date |
| 7211984 | Start-up and restart of interior permanent magnet machines A method of starting a permanent magnet machine. A machine stator voltage in a stationary reference frame is sensed. An initial speed of a rotor of the machine is estimated based on the sensed voltage, and state variables of control algorithms are initialized based ... | 05/01/2007 |
| 7145310 | Method and system for controlling permanent magnet synchronous motor A system for controlling a permanent magnet synchronous motor calculates fundamental a d-axis (or q-axis) voltage command based on a difference between a d-axis (or q-axis) current command and a d-axis (or q-axis) current feedback signal, calculates a harmonic suppr... | 12/05/2006 |
| 6992451 | Motor control apparatus operable in fail-safe mode In a motor feedback control, the current supply phase is set on the basis of the encoder count of an encoder and the current supply phase is also set on the basis of the encoder count by time-synchronous processing. In the feedback control, a maximum value or a mini... | 01/31/2006 |
| 6177777 | Actuation and control method and device, particularly for synchronous permanent-magnet motors The method and the corresponding device allow to start a synchronous motor with the chosen rotation direction, with a very high static torque, without requiring any modification of the structure of the synchronous motors currently in use, by means of an a... | 01/23/2001 |
| 6150790 | Method for the starting and steady-state supply of a permanent-magnet synchronous motor particularly for driving a hydraulic pump A method for the starting and steady-state supply of a permanent-magnet synchronous motor, particularly for driving a centrifugal hydraulic pump. The method comprises three successive steps: a first learning step, a second starting step, and a third stead... | 11/21/2000 |
