Abstract: A rotating electric machine includes coil bodies formed as a first stator winding wound on first teeth, other coil bodies formed as a second stator winding wound on second teeth, and yet other coil bodies formed as the first stator winding and the second stator winding wound on third teeth. A phase difference between an electric current in the first stator winding wound on the third teeth and an electric current in the second stator winding wound on the third teeth is set so that respective phase differences of magnetomotive forces of the other coil bodies in three phases with respect to respective magnetomotive forces of the coil bodies in three phases and respective phase differences of magnetomotive forces of the yet other coil bodies in three phases with respect to respective magnetomotive forces of the other coil bodies in three phases are 20 degrees in electric angle.

Abstract: A rotating electric machine includes coil bodies formed as a first stator winding wound on first teeth, other coil bodies formed as a second stator winding wound on second teeth, and yet other coil bodies formed as the first stator winding and the second stator winding wound on third teeth. A phase difference between an electric current in the first stator winding wound on the third teeth and an electric current in the second stator winding wound on the third teeth is set so that respective phase differences of magnetomotive forces of the other coil bodies in three phases with respect to respective magnetomotive forces of the coil bodies in three phases and respective phase differences of magnetomotive forces of the yet other coil bodies in three phases with respect to respective magnetomotive forces of the other coil bodies in three phases are 20 degrees in electric angle.

Abstract: An electric rotating machine includes a power transmission mechanism and an armature. The power transmission mechanism is equipped with a first, a second, and a third rotor. The first rotor includes n soft-magnetic members. The second rotor includes k soft-magnetic members. Note that n and k are an integer more than one. The third rotor is made up of magnets whose number of pole pairs is m where m is an integer more than or equal to one. The armature faces the third rotor. The first, second, and third rotors are arranged so as to establish a magnetic coupling among them. The soft-magnetic members of the first and second rotors and the magnets of the third rotor meet a relation of 2m=|k±n|. This arrangement is capable of achieving the transmission of power regardless of electric energization of the armature.

Abstract: A power transmission apparatus working to magnetically transmit power is provided which includes a first rotor including n soft-magnetic members, a second rotor including k soft-magnetic members, and a third rotor including magnets whose number of pole pairs is m where m is an integer more than or equal to one, the number of the magnets meeting a relation of 2m=|k±n| where n and k are an integer more than one. The first rotor, the second rotor, and the third rotor are arranged in magnetic coupling with each other. The soft-magnetic members of each of the first rotor and the second rotor are arranged at intervals away from each other, thereby minimizing the leakage of magnetic flux flowing from one of the soft-magnetic members to another in each of the first and second rotor to ensure the stability in operation of the power transmission mechanism.

Abstract: An electric rotating machine includes a power transmission mechanism and an armature. The power transmission mechanism is equipped with a first, a second, and a third rotor. The first rotor includes n soft-magnetic members. The second rotor includes k soft-magnetic members. Note that n and k are an integer more than one. The third rotor is made up of magnets whose number of pole pairs is m where m is an integer more than or equal to one. The armature faces the third rotor. The first, second, and third rotors are arranged so as to establish a magnetic coupling among them. The soft-magnetic members of the first and second rotors and the magnets of the third rotor meet a relation of 2m=|k±n|. This arrangement is capable of achieving the transmission of power regardless of electric energization of the armature.

Abstract: In a control apparatus for an AC electric motor, a dq axis current feedback control unit 44 and a qn axis current feedback control unit 46 execute a feedback control of higher harmonic components of actual currents id and iq flowing in an AC electric machine 10 to higher harmonic current instruction values ?idkr and ?iqkr. A d axis current instruction value adjusting unit 24 and a q axis current instruction value adjusting unit 26 add the higher harmonic current instruction values ?idkr and ?iqkr to fundamental current instruction values idr and iqr. Ad axis current feedback control unit 32 and a q axis current feedback control unit 34 execute a feedback control of a difference between the actual currents id and iq and the sum of the higher harmonic current instruction values ?idkr, ?iqkr and the fundamental current instruction values idr and iqr into zero.

Abstract: A two-shaft compound motor includes a first rotating machine made of a magnetic modulation motor, a second rotating machines made of an electric motor, and a lockup mechanism. The first and second rotating machines are aligned on same axial line. The first rotating machine includes a first rotating shaft, a first stator, a first rotor made of a magnetic induction rotor, and a second rotor made of a magnet rotor. One of the first and second rotors is provided to be integrally rotatable with the first rotating shaft. The second rotating machine includes a second rotating shaft, a second stator, and a third rotor. The third rotor is mechanically coupled with the other of the first and second rotors, and is provided such as to be integrally rotatable with the second rotating shaft. The lockup mechanism is capable of mechanically direct-coupling the first rotating shaft and the second rotating shaft.

Abstract: In a control apparatus for an AC electric motor, a dq axis current feedback control unit 44 and a qn axis current feedback control unit 46 execute a feedback control of higher harmonic components of actual currents id and iq flowing in an AC electric machine 10 to higher harmonic current instruction values ?idkr and ?iqkr. A d axis current instruction value adjusting unit 24 and a q axis current instruction value adjusting unit 26 add the higher harmonic current instruction values ?idkr and ?iqkr to fundamental current instruction values idr and iqr. Ad axis current feedback control unit 32 and a q axis current feedback control unit 34 execute a feedback control of a difference between the actual currents id and iq and the sum of the higher harmonic current instruction values ?idkr, ?iqkr and the fundamental current instruction values idr and iqr into zero.

Abstract: A data backup system and a data backup method for backing up data stored in a mobile communication terminal to a backup device via a communication network, capable of optimizing network traffic as well as improving the selectivity of backup data to thereby improve convenience for the user, a mobile communication terminal and a backup device used for the same, and a backup data transmission method. When transmitting user data from a mobile communication terminal as backup data, the user arbitrary selects at least one of a plurality of data selection condition candidates to set the selected one as a data selection condition. Based on the one or more data selection conditions, user data to be backed up are selected from all user data.

Abstract: A data backup system and a data backup method for backing up data stored in a mobile communication terminal to a backup device via a communication network, capable of optimizing network traffic as well as improving the selectivity of backup data to thereby improve convenience for the user, a mobile communication terminal and a backup device used for the same, and a backup data transmission method. When transmitting user data from a mobile communication terminal as backup data, the user arbitrary selects at least one of a plurality of data selection condition candidates to set the selected one as a data selection condition. Based on the one or more data selection conditions, user data to be backed up are selected from all user data.