Abstract:
A power plant 1 for driving driven parts DW and DW includes a prime mover 3, and first and second generator-motors 20, 30. The first generator-motor 20 is comprised of a first stator 22, a first rotor 21 formed by magnets, and a second rotor 23 formed by soft magnetic material elements and disposed between the first stator 22 and the first rotor 21. The second generator-motor 30 is comprised of a second stator 32, a third rotor 31 formed by magnets, and a fourth rotor 33 formed by soft magnetic material elements and disposed between the second stator 32 and the third rotor 31. The first and fourth rotors 21, 33 are mechanically connected to the driven parts DW and DW, and the second and third rotors 23, 31 are mechanically connected to an output shaft 3a of the prime mover 3.
Abstract:
To provide a power plant which is capable of improving the driving efficiency and electric power-generating efficiency thereof. A first transmission 20 is connected between the output shaft 3a of an internal combustion engine 3 and driven parts DW and DW, which are connected to each other. A generator-motor 30 includes a stator 32 for generating magnetic fields and first and second rotors 31 and 33, and carries out energy input and output between the stator 32 and the first and second rotors 31 and 33 during generation of rotating magnetic fields. Along with the energy input and output, the rotating magnetic fields and the first and second rotors 31 and 33 rotate while maintaining such a linear speed relationship that the difference between the rotational speed of the magnetic fields and that of the second rotor 33, and the difference between the rotational speed of the second rotor 33 and that of the first rotor 31 are equal to each other. One of the first and second rotors 31 and 33 is connected between the output shaft 3a of the engine 3 and the first transmission 20, and the other to the driven parts DW and DW.
Abstract:
A power plant which is capable of reducing the size and costs thereof and attaining high driving efficiency. In the power plant 1, the ratio between the number of first armature magnetic poles that form a first rotating magnetic field generated by a first stator 23 of a first rotating machine 21, the number of first magnetic poles 24a of a first rotor 24, and the number of first soft magnetic material elements 25a of a second rotor 25 disposed between the two 23 and 24 is set to 1:m:(1+m)/2 (m≠1.0), and the ratio between the number of second armature magnetic poles that form a second rotating magnetic field generated by a second stator 33 of a second rotating machine 31, the number of second magnetic poles 34a of a third rotor 34, and the number of second soft magnetic material elements 35a of a fourth rotor 35 disposed between the two 33 and 34 is set to 1:n:(1+n)/2 (n≠1.0). The two stators 23 and 33 are connected to each other. The first and fourth rotors 24 and 35 are connected to driven parts DW and DW, and the second and third rotors 25 and 34 are connected to an output portion 3a of a heat engine 3.
Abstract:
To provide an electric motor which is capable of reducing the size and manufacturing costs thereof, and enhancing the degree of freedom in design thereof. An electric motor 1 is comprised a first structure 4 including a magnetic pole row which is formed by a predetermined plurality of magnetic poles 4a arranged in a predetermined direction and having each two adjacent magnetic poles 4a so disposed as to have polarities different from each other, a second structure 3 including an armature row which is disposed in a manner opposed to the magnetic pole row, for generating moving magnetic fields moving in the predetermined direction between the armature row and the magnetic pole row by a predetermined plurality of armature magnetic poles generated at the armatures 3c to 3e in accordance with supply of electric power thereto, and a third structure 5 including a soft magnetic material element row which is formed by a predetermined plurality of soft magnetic material elements 5a arranged in the predetermined direction in a manner spaced from each other, and is disposed such that the soft magnetic material element row is positioned between the magnetic pole row and the armature row. A ratio between the number of the armature magnetic poles, the number of the magnetic poles 4a, and the number of the soft magnetic material elements 5a is set to 1:m:(1+m)/2(m≠1.0).
Abstract:
To provide a magnetic machine capable of reducing the ripple and cogging of torque or thrust. An electric motor 1 includes three stators 6 to 8 each having an armature row, a rotor 3 having a permanent magnet row, and a rotor 10 having a soft magnetic material row. The respective phases in electrical angle between magnetic poles generated at respective armatures 6a to 8a of the armature row and the magnetic poles of the permanent magnet row are set to be each displaced in a predetermined direction by an electrical angle of 2π/3, and the respective phases in electrical angle between the magnetic poles generated at the respective armatures 6a to 8a of the armature row and soft magnetic material cores 11b to 13b of the soft magnetic material row are set to be each displaced in the predetermined direction by an electrical angle of π/3.
Abstract:
A power unit includes: a differential gear (21) in which a first rotating element (21r) is connected to an output shaft of a prime mover (2), a second rotating element (21s) is connected to a body of rotation of a rotary actuator (3), and a third rotating element (21c) is connected to a driven unit (4) via a first power transmission path (22); a first power transmission system (34, 36, 37) selectively operable between an operating state for enabling power transmission in the first power transmission path (22) and an operating state for disconnecting the power transmission; a second power transmission path (23) connecting between the output shaft of the prime mover (2) and the driven unit (4); and a second power transmission system (32) selectively operable between an operating state for enabling power transmission in the second power transmission path and an operating state for disconnecting the power transmission, wherein an auxiliary device (5) is connected to one of the second rotating element (21s) and the third rotating element (21c) of the differential gear (21).
Abstract:
An accessory drive system which is capable of preventing the driving efficiency thereof from being lowered and achieving simplified construction, and reduction of the size and manufacturing costs. The system has a rotating machine including a first rotor, a second rotor, and a stator. The first rotor is formed by magnetic poles circumferentially arranged, with each two adjacent ones having different polarities. The stator has an armature row for generating a rotating magnetic pole that circumferentially rotates, between the armature and magnetic pole rows. The second rotor is formed by soft magnetic material elements circumferentially arranged with space, and disposed between the magnetic pole and armature rows. A ratio between the number of the armature magnetic poles, that of the magnetic poles, and that of the soft magnetic material elements is set to 1:m:(1+m)/2(m≠1.0).
Abstract:
A power unit which makes it possible to attain the reduction of the size and manufacturing costs thereof, and improve turnability. A power unit drives left and right rear wheels. A first rotating machine and a second rotating machine are configured to be capable of inputting and outputting energy. A first and a second planetary gear units are disposed between the first and second rotating machines and the left and right rear wheels, respectively, for transmitting energy between the first rotating machine and the left and right rear wheels and between the second rotating machine and the same. The first rotating machine, the left rear wheel, the right rear wheel, and the second rotating machine are in a collinear relationship in rotational speed, and are in a line in this order in a collinear chart representing the collinear relationship.
Abstract:
When receiving a traffic information providing request, a traffic information providing apparatus analyzes which area's traffic information is requested based on the received request information. Traffic information of road links located in the requested area is read from the traffic information, and it is determined whether the road links' traffic information is similar or not. Similar links configure a link group, and traffic information corresponding to the link group is created. Traffic information of the configured link group is delivered to an in-vehicle information apparatus.
Abstract:
[Object] To provide a power plant which is capable of improving the drive efficiency and power generation efficiency when electric power is generated using power of the drive part thereof. [Solution] In a power plant 1, an output shaft 3a of an internal combustion engine 3 is connected to driven parts DW and DW, and a transmission 20 is connected between the output shaft 3a of the engine 3 and the driven parts DW and DW, while one of first to third elements 31, 32, and 34 of a planetary gear train 30 is connected between the output shaft 3a of the engine 3 and the transmission 20, another one of the first to third elements to the output portion 42 of the generator-motor 40, and the remaining one of the same to the driven parts DW and DW.