Patents by Inventor Eberhard Wunsch
Eberhard Wunsch has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Circuit arrangement and method for controlling a brushless, permanently excited direct current motor
Patent number: 7250733Abstract: The invention relates to a circuit arrangement for self-commuting control of a brushless, permanently excited direct current motor. Said circuit arrangement determines the commutation interval by evaluating the induction signal of a signal phase. A capacitive interference suppression component is arranged between the signal phase and an adjacent motor phase in the commutation cycle in order to suppress interferences of the induction signal. The capacitive interference suppression component is dimensioned in such a way that interfering influences of the power-switch element upon the induction signal are compensated for. This makes it possible to more accurately determine the momentary rotating position of the rotor and, hence, a differentiated control or adjustment of performance-influencing manipulated variables during operation. This has positive effects upon the efficiency, the power/weight ration and energy consumption of the motor and enables stable operation.Type: GrantFiled: January 19, 2004Date of Patent: July 31, 2007Assignee: Siemems AGInventors: Pietro De Filippis, Karsten Lohse, Johannes Schwarzkopf, Eberhard Wünsch -
Circuit arrangement and method for controlling a brushless, permanently excited direct current motor
Publication number: 20070040520Abstract: The invention relates to a circuit arrangement for self-commuting control of a brushless, permanently excited direct current motor. Said circuit arrangement determines the commutation interval by evaluating the induction signal of a signal phase. A capacitive interference suppression component is arranged between the signal phase and an adjacent motor phase in the commutation cycle in order to suppress interferences of the induction signal. The capacitive interference suppression component is dimensioned in such a way that interfering influences of the power-switch element upon the induction signal are compensated for. This makes it possible to more accurately determine the momentary rotating position of the rotor and, hence, a differentiated control or adjustment of performance-influencing manipulated variables during operation. This has positive effects upon the efficiency, the power/weight ratio and energy consumption of the motor and enables stable operation.Type: ApplicationFiled: January 19, 2004Publication date: February 22, 2007Inventors: Pietro De Filippis, Karsten Lohse, Johannes Schwarzkopf, Eberhard Wunsch -
Patent number: 7067998Abstract: A drive circuit for brushless DC motors including a rotor and a stator with at least one stator coil includes a commutation device which supplies commutation pulses of drive current to the stator coil(s). The commutation device senses the rotor position and calculates current rotor speed therefrom. The rotor speed is then used to shift the commutation circuits according to predetermined functions. The shifting of commutation currents is occasioned by shifting either or both of the ignition part of a commutation pulse and the extinction part of such pulse.Type: GrantFiled: October 14, 2003Date of Patent: June 27, 2006Assignee: Papst Licensing GmbH & Co. KGInventors: Arno Karwath, Mojtaba Moi, Eberhard Wünsch
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Patent number: 6986595Abstract: In motor vehicles the problem often arises that additional lighting is required in the cabin, in places where a voltage supply and the mounting thereof in the cockpit can not satisfactorily be resolved. A plug-in rechargeable lamp (1) has thus been developed, which may be plugged into the 12V or 24V cigarette lighter socket with a light diode (13) as light source, which gives a multi-application light source which may be used anywhere. The use of a light diode renders the lamp insensitive to shock effects and contributes to the lifespan thereof. The threshold voltage of the light diode (13) is optimally matched to the final discharge voltage of the applied accumulator cells, such that a fill discharge of the accumulators is practically excluded.Type: GrantFiled: May 18, 2001Date of Patent: January 17, 2006Assignee: Witte & Sutor GmbHInventor: Eberhard Wünsch
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Publication number: 20040239274Abstract: A drive circuit for brushless DC motors including a rotor and a stator with at least one stator coil includes a commutation device which supplies commutation pulses of drive current to the stator coil(s). The commutation device senses the rotor position and calculates current rotor speed therefrom. The rotor speed is then used to shift the commutation circuits according to predetermined functions. The shifting of commutation currents is occasioned by shifting either or both of the ignition part of a commutation pulse and the extinction part of such pulse.Type: ApplicationFiled: October 14, 2003Publication date: December 2, 2004Applicant: Papst Licensing GmbHInventors: Arno Karwath, Mojtaba Moi, Eberhard Wunsch
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Publication number: 20040027825Abstract: In motor vehicles the problem often arises that additional lighting is required in the cabin, in places where a voltage supply and the mounting thereof in the cockpit can not satisfactorily be resolved. A plug-in rechargeable lamp (1) has thus been developed, which may be plugged into the 12V or 24V cigarette lighter socket with a light diode (13) as light source, which gives a multi-application light source which may be used anywhere. The use of a light diode renders the lamp insensitive to shock effects and contributes to the lifespan thereof. The threshold voltage of the light diode (13) is optimally matched to the final discharge voltage of the applied accumulator cells, such that a fill discharge of the accumulators is practically excluded.Type: ApplicationFiled: May 19, 2003Publication date: February 12, 2004Inventor: Eberhard Wunsch
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Publication number: 20020093300Abstract: A drive circuit for brushless DC motors including a rotor and a stator with at least one stator coil includes a commutation device which supplies commutation pulses of drive current to the stator coil(s). The commutation device senses the rotor position and calculates current rotor speed therefrom. The rotor speed is then used to shift the commutation circuits according to predetermined functions. The shifting of commutation currents is occasioned by shifting either or both of the ignition part of a commutation pulse and the extinction part of such pulse.Type: ApplicationFiled: March 19, 2002Publication date: July 18, 2002Applicant: Papst Licensing GmbHInventors: Arno Karwath, Mojtaba Moini, Eberhard Wunsch
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Patent number: 6384554Abstract: A drive circuit for brushless DC motors including a rotor and a stator with at least one stator coil includes a commutation device which supplied commutation pulses of drive current to the state coil(s). The commutation device senses the rotor position and calculates current rotor speed therefrom. The rotor speed is then used to shift the commutation circuits according to predetermined functions. The shifting of commutation currents is occasioned by shifting either or both of ignition part of a commutation pulse and the extinction part of such pulse.Type: GrantFiled: February 10, 1998Date of Patent: May 7, 2002Assignee: Papst Licensing GmbHInventors: Arno Karwath, Mojtaba Moini, Eberhard Wünsch
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Patent number: 5717297Abstract: A drive circuit for brushless DC motors comprising a rotor and a stator with at least one stator coil includes a commutation device which supplies commutation pulses of drive current to the stator coil(s). The commutation device senses the rotor position and calculates current rotor speed therefrom. The rotor speed is then used to shift the commutation currents according to predetermined functions. The shifting of commutation currents is occasioned by shifting either or both of the ignition part of a commutation pulse and the extinction part of such pulses.Type: GrantFiled: June 5, 1995Date of Patent: February 10, 1998Assignee: Papst Licensing GmbHInventors: Arno Karwath, Mojtaba Moini, Eberhard Wunsch
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Patent number: 5583404Abstract: A drive circuit for brushless DC motors comprising a rotor and a stator with at least one stator coil includes a commutation device which supplies commutation pulses of drive current to the stator coil(s). The commutation device senses the rotor position and calculates current rotor speed therefrom. The rotor speed is then used to shift the commutation currents according to predetermined functions. The shifting of commutation currents is occasioned by shifting either or both of the ignition part of a commutation pulse and the extinction part of such pulses.Type: GrantFiled: October 5, 1992Date of Patent: December 10, 1996Inventors: Arno Karwath, Mojtaba Moini, Eberhard Wunsch