Kura Laboratory Corporation Patent applications |
Patent application number | Title | Published |
20110084567 | ROTATING ELECTRIC MACHINE SYSTEM - A rotating electric machine system includes a rotor having a rotor plane. The rotor includes magnetic salient poles of more than one in a circumferential direction on the rotor plane. Adjacent magnetic salient poles are magnetized in different polarities from each other by a permanent magnet. A control magnet is arranged in an inside part of the adjacent magnetic salient poles. An excitation coil is placed so as to make an excitation flux collectively in the rotor. The magnetization state of the control magnet where the magnetic flux by the armature coils and the excitation flux flow in a same direction is changed irreversibly. An amount of the magnetic flux flowing through the armature coils is controlled by changing the magnetization state of the control magnet in accordance with an output of the rotating electric machine system so that the output is optimized. | 04-14-2011 |
20100213885 | MAGNETIC FLUX CONTROLLABLE ROTATING ELECTRIC MACHINE SYSTEM - In a magnet-exciting rotating electric machine system, a rotor surface has magnetic salient poles and island-shaped magnetic poles alternately in circumferential direction, and the island-shaped magnetic poles are constituted so that magnetic flux coming from an external source does not flow through. A magnetic excitation part magnetizes the island-shaped magnetic poles and the magnetic salient poles collectively in the same direction, and then control a flux amount flowing through an armature. The armature has armature coils that face the magnetic salient pole and the island-shaped magnetic pole simultaneously so that driving torque fluctuation or power generation voltage waveform distortion is controlled. The magnetic excitation part changes magnetization state of a field magnet irreversibly, or changes an excitation current to an excitation coil to control a flux crossing the armature. | 08-26-2010 |
20100176679 | MAGNETIC FLUX CONTROLLABLE ROTATING ELECTRIC MACHINE SYSTEM - A rotor surface has magnetic salient poles and island-shaped magnetic poles alternately in circumferential direction, and the island-shaped magnetic pole is constituted so that a magnetic flux coming from an external source does not flow through. A magnetic excitation part magnetizes the island-shaped magnetic poles and the magnetic salient poles collectively in the same direction, and then control a flux amount flowing through an armature. The armature has armature coils that face the magnetic salient pole and the island-shaped magnetic pole simultaneously so that driving torque fluctuation or power generation voltage waveform distortion is controlled. The magnetic excitation part changes magnetization state of a field magnet irreversibly, or changes an excitation current to an excitation coil to control a flux flowing through the armature. | 07-15-2010 |
20090045765 | FIELD CONTROLLABLE ROTATING ELECTRIC MACHINE SYSTEM WITH MAGNETIC EXCITATION PART - In a magnet-exciting rotating electric machine system, every magnetic salient pole group to be magnetized in a same polarity is collectively magnetized by a magnetic excitation part. In the magnetic excitation part, a main magnetic flux path in which a magnetic flux circulates through the armature and a bypass magnetic flux path are connected to the field magnet in parallel. Magnetic flux amount in each path is controlled by mechanical displacement. Thereby, the rotating electric machine system and the magnetic flux amount control method in which magnetic field control is easy are provided. Also, means and method are provided so that a power required for the displacement may be made small by adjusting magnetic resistance of the above magnetic flux path. | 02-19-2009 |
20090045691 | FIELD CONTROLLABLE ROTATING ELECTRIC MACHINE SYSTEM WITH MAGNETIC EXCITATION PART - In a magnet-exciting rotating electric machine, a magnetic excitation part for supplying a magnetic flux between a magnetic salient pole and an armature is composed to be divided into two so as to be capable of being relatively displaced. In this structure, the magnetic flux from the field magnet is divided into a main magnetic flux pathway that passes through the armature side and a bypass magnetic flux pathway that does not pass through the armature, and thereby, the magnetic flux of the main magnetic flux pathway is changed. The magnetic resistances of the main magnetic flux pathway and the bypass magnetic flux pathway are composed to be approximately equal, and then a magnetic force preventing the relative displacement is suppressed small. Thereby, the rotating electric machine system and the magnetic field control method in which magnetic field control is easy are provided. | 02-19-2009 |
20090026864 | FIELD CONTROLLABLE ROTATING ELECTRIC MACHINE SYSTEM WITH FLUX SHUNT CONTROL - In a magnet-exciting rotating electric machine, a magnetic field pole part opposing an armature is composed to be divided into a surface magnetic pole part and a magnetic excitation part so as to be capable of being relatively displaced. The magnetic excitation part supplies a magnetic flux to a magnetic salient pole. The magnetic flux from the field magnet is divided into a main magnetic flux pathway that circulates through the armature side and a bypass magnetic flux pathway that does not pass through the armature, and thereby, the magnetic flux of the main magnetic flux pathway is changed. The magnetic resistances of the main magnetic flux pathway and the bypass magnetic flux pathway are composed so that total magnetic flux amount from the field magnet is maintained constant, and then a magnetic force preventing the relative displacement is maintained small. | 01-29-2009 |