Patents
Patents for H02P 6 - Arrangements for controlling synchronous motors or other dynamo-electric motors with electronic commutators in dependence on the rotor position; Electronic commutators therefor (19,185)
10/1980
10/28/1980US4230976 Brushless, permanent magnet d-c motor with improved commutation control
10/21/1980US4229682 Electronically commutating motor
10/15/1980EP0016772A1 Variable reluctance electric motor systems
10/14/1980US4228396 Electronic tachometer and combined brushless motor commutation and tachometer system
10/14/1980US4228384 Brushless DC printed motor
09/1980
09/30/1980US4225811 Direct current motor with polyphase stator winding and electronic commutating device controlled by an angular position transmitter
09/23/1980CA1086376A1 Brushless motor driving circuit
09/18/1980WO1980001974A1 Electric drive with asynchronous motor
09/18/1980WO1980001973A1 Electric drive with synchronous motor
09/16/1980US4223261 Multi-phase synchronous machine system
06/1980
06/17/1980US4208621 Brushless DC motor control system
06/10/1980US4207510 Control method and means for efficient operation of brushless d-c motors over a wide range of operating conditions
05/1980
05/28/1980EP0011217A1 Electronic blocking device for direct current motors
04/1980
04/08/1980US4197489 Spindle drive system
02/1980
02/05/1980US4187456 Incremental positioning system
12/1979
12/27/1979WO1979001134A1 Variable reluctance electric motor systems
10/1979
10/02/1979US4169990 Electronically commutated motor
09/1979
09/25/1979CA1063167A2 Control circuit for variable reluctance motor
09/11/1979US4167693 Control arrangement for a brushless D-C motor
09/11/1979US4167691 Control arrangement for a brushless motor
08/1979
08/14/1979US4164691 Multiphase brushless DC motor using two Hall-effect generators
07/1979
07/24/1979US4162435 Method and apparatus for electronically commutating a direct current motor without position sensors
06/1979
06/26/1979CA1057352A1 Brushless phase locked servo drive
06/19/1979US4158795 Brushless DC motors
06/05/1979CA1056009A1 Control circuit for variable reluctance motor
05/1979
05/22/1979US4156168 Electric motor
01/1979
01/23/1979US4136308 Stepping motor control
01/16/1979US4135120 Drive circuit for a brushless motor
01/02/1979US4132931 Control system for a.c. motors
01/02/1979US4132930 Brushless D-C motor with several Y connected phase windings
12/1978
12/26/1978US4131828 Apparatus for rotatively driving a turn table
12/12/1978CA1044322A1 Arrangement for detecting ground leaks in the rotor circuit of a brushless synchronous machine excited by rotating rectifiers
11/1978
11/28/1978US4127799 Apparatus for damping rotation of turntable
11/14/1978US4125796 Control apparatus for use in a synchronous machine
10/1978
10/31/1978CA1041604A1 Electronic control for star-connected loads
10/10/1978US4119895 Brushless d.c. motor with precise speed control
09/1978
09/12/1978US4114073 Brushless motor driving circuit
08/1978
08/29/1978US4110669 Synchronous machine control system
06/1978
06/27/1978US4097788 Control circuit for a self-starting electric motor
06/20/1978US4096420 Control circuit for a brushless D.C. motor
06/20/1978US4096419 Electric motors
06/06/1978US4093897 Electric motor
05/1978
05/30/1978US4092572 Brushless D.C. motor driving system
05/09/1978US4088932 Control system for commutatorless motor
02/1978
02/07/1978US4072884 Brushless phase locked servo drive
01/1978
01/24/1978US4070606 Driving circuit for brushless DC motor
01/03/1978US4066935 Stator winding control circuit for a brushless d.c. motor
11/1977
11/29/1977US4060753 Control system for commutatorless motor
09/1977
09/27/1977US4051420 Hall motor control system
09/27/1977US4051417 Control system for a brushless motor
09/06/1977US4047084 Semiconductor motor controlled for energization by a single position sensing element
09/06/1977US4047081 Commutating arrangement for an electric motor supplied from a DC voltage source
08/1977
08/09/1977US4041362 Motor control system
08/02/1977US4039911 Dc motor controlled by hall generator
07/1977
07/12/1977US4035700 Electronic control apparatus
07/12/1977US4035699 Brushless direct current machine and method of controlling the same
06/1977
06/14/1977US4030005 Brushless d.c. motor having rotor position-dependent control means
06/07/1977US4028598 Direct-current motor comprising an electronic commutator
05/1977
05/31/1977US4027215 Rotary machine
05/31/1977US4027213 Electronic switching arrangement for energizing electric motors
05/31/1977US4027212 Three phase full wave DC motor decoder
05/24/1977US4025835 Three-phase brushless DC motor
05/10/1977US4023082 Speed control circuit for a DC motor having a Hall generator
03/1977
03/08/1977US4011487 Solid state commutator motor with internally powered armature
02/1977
02/15/1977US4008425 Motor servo system with multiplier means to drive and servo the motor
01/1977
01/25/1977US4005347 Electronically commutated motor and method of making same
12/1976
12/28/1976US4000464 Arrangement for detecting ground leaks in the rotor circuit of a brushless synchronous machine excited by rotating rectifiers
12/21/1976US3999108 Speed regulation system for DC motors with hall generators
12/14/1976US3997825 Method and apparatus for controlling synchronous motor
12/14/1976US3997823 Brushless DC motor driving circuit
10/1976
10/26/1976US3988652 Stabilized brushless motor drive circuit
10/12/1976US3986086 Control circuit for brushless D-C motor
09/1976
09/14/1976US3980933 Control circuit for variable reluctance motor
09/07/1976US3979651 Direct current and synchronous motor system
06/1976
06/29/1976US3967174 Electronic commutation apparatus for a brushless D.C. motor
05/1976
05/25/1976US3959700 Speed control device for transistor motor
04/1976
04/06/1976US3949283 Control system for brushless motor
03/1976
03/23/1976US3946292 Brushless motor driving system
03/02/1976US3942083 Brushless motor
02/1976
02/24/1976US3940670 Speed control apparatus for a D.C. motor having hall generators
02/24/1976US3940669 AC motor control system
02/10/1976US3938014 Brushless d-c motor
01/1976
01/13/1976US3932793 Speed control circuit for permanent magnet D-C motors
01/06/1976US3931556 System for driving a direct-current motor in synchronism with an external signal
01/06/1976US3931553 Electronic commutation system having motor stator windings in push-pull