32results about How to "Wide operating speed range" patented technology

The present invention relates to a magnetic steel embedded hybrid excitation motor. The magnetic steel embedded hybrid excitation motor comprises a stator 9 and a rotor 10 arranged inside the stator 9, the stator 9 is made of a stator iron core in which an armature winding 1 is embedded, and the rotor 10 comprises a rotor punching 5, magnetic steels 6 and exciting windings 23, wherein a plurality of punching grooves are arranged on the rotor punching 5 evenly, so that the rotor 10 forms a plurality of magnetic poles. The magnetic steels 6 are embedded in the sides of the magnetic poles close to an excircle and are distributed alternatively along with the N and S poles of the rotor 10, and the exciting windings 3 are wound on the magnetic poles of the rotor 10 directly and are distributed alternatively along with the N and S poles of the rotor 10 in the clockwise and anticlockwise directions. The magnetic steel embedded hybrid excitation motor of the present invention is simple in structure and low in cost, is easy to produce, use and popularize, is especially suitable for a large-power automobile integrated starter generator, enables the moment density and the working rotating speed range of a system to be improved effectively, also can used as a driving motor, and enables the motor power density to be improved effectively.

The invention discloses a direct-driven generator and a direct-driven generating set formed thereby. The direct-driven generator comprises a stator and a rotor, wherein the stator further comprises a stator core and a stator winding; the rotor further comprises a rotor core and permanent magnets placed in no less than one air slot of the rotor core; and the electromagnetic torque of the direct-driven generator comprises a permanent-magnet torque and a reluctance torque. The direct-driven generator synthesizes the characteristics of both a synchronous reluctance generator and a synchronous permanent-magnet generator, reflects a brand-new motor design and running concept, has the remarkable advantages of high power density, wide operation speed range, high efficiency, small size, light weight and the like, and greatly improves the competitive advantage of a direct-driven wind turbine when applied to the large-scale direct-driven wind turbine.

The invention relates to a permanent magnetism dc brushless varying speed pressure-sustaining wind-driven generator and its anti-hunt means. The generator is derived by the varying speed wind-orbicular and sends the pressure-sustaining dc power which has been outputted to the power net after frequency-transferring; when the motor achieves the mix working rotate speed, the armature winding leak per-unit quantity against X* equals the rate of the difference of the motor mix rotate speed and the min rotate speed and the min working rotate speed with the range 0.1-1.7.

The invention provides a brushless hybrid excitation synchronous generator with adjustable flux leakage, which includes a stator and a rotor. Alternately arranged into at least a four-pole structure, the rotor harmonic winding is connected to the excitation winding, the electric excitation pole adopts harmonic current brushless excitation, the permanent magnet pole adopts a V-shaped embedded arrangement of permanent magnets, and the two ends of the permanent magnet and the permanent magnet A leakage flux path is provided between the magnetic poles, the leakage flux path is used for the leakage flux of the permanent magnet when the field is weakened, and the excitation flux is passed by the leakage flux path when the magnetization is increased. Based on the existing harmonic excitation technology, the present invention proposes a harmonic excitation-permanent magnet flux leakage adjustable brushless hybrid excitation synchronous generator, which can be applied to various industrial fields such as wind power generation and hybrid electric vehicles.

The invention relates to a belt transmission type starting and power generation integrated machine. The belt transmission type starting and power generation integrated machine comprises a belt pulley, a driving end cover assembly, a stator assembly, a rotor assembly and a carbon brush end cover assembly and is characterized in that a bearing chamber is arranged at a position, corresponding to a rotor shaft, at the middle of a carbon brush end cover, a bearing sensor is arranged in the bearing chamber, the end part of a carbon brush in a carbon brush rack props against the circumferential surface of a current collection ring of a rotor shaft, a junction box is further arranged outside the carbon brush end cover, a wiring seat is fixedly arranged in the junction box and is used for connecting three phase cables, cable heads of the three phase cables are separately and fixedly provided with connection sheets, the connection sheets separately pass through a socket of the junction box and enter to the junction box to be fixedly connected with the wiring seat, a sealing cover is fixedly arranged at the top of the junction box, a temperature sensor is arranged at the end part of a stator iron core, and a signal wire connector of the temperature sensor is fixed on the carbon brush rack. The belt transmission type starting and power generation integrated machine is compact in structure and has the advantages of a rapid starting function, low starting noise, automatic switching between starting and power generation and high power generation efficiency, and also has functions of assisted electric power for an engine and vehicle braking energy recycle.

The present invention proposes a multi-mode drive system for a hybrid vehicle, including an engine, a generator, a drive motor, a planetary gear mechanism, an input shaft, an input shaft of a generator, an intermediate shaft, an output shaft of a drive motor, an output shaft and a differential, The engine is connected to the input shaft through a torsional shock absorber. The input shaft is coaxially arranged with the input shaft of the generator, and arranged parallel to the output shaft, intermediate shaft and output shaft of the driving motor. The planetary gear mechanism is installed on the input shaft of the generator. The end of the shaft is connected with the planet carrier, the first gear and the second gear are installed on the input shaft, the third gear and the fourth gear are installed on the intermediate shaft, and the fifth, sixth, and seventh gears are installed on the output shaft in sequence. The eighth gear is arranged on the output shaft of the driving motor, the sixth gear and the seventh gear mesh with the first and second gears, the third gear and the fourth gear respectively, and the differential gear is arranged on the differential, and the second The fifth gear meshes with the differential gear and the eighth gear respectively. The present invention has a compact structure and can realize driving in various functional modes.

The invention relates to a low-speed high-thrust-density linear motor which comprises a motor short primary and a motor long secondary arranged opposite to the motor short primary, wherein an air gap (5) is reserved between the motor short primary and the motor long secondary; the motor short primary comprises a stator core (1), stator teeth (3) uniformly distributed at the periphery of the stator core (1), a stator winding (2) and stator permanent magnets (4); the stator core (1) is of an open slot stator structure, i.e., the stator core (1) is provided with a stator slot (8), the stator permanent magnets (4) are uniformly distributed between every two adjacent stator teeth (3), and the stator winding (2) is inserted into the stator slot (8); the motor long secondary comprises an active cell yoke (7) and active cell permanent magnets (6); and the active cell permanent magnets (6) are embedded into the active cell yoke (7) alternately and equidistantly in a horizontal direction. In the low-speed high-thrust-density linear motor provided by the invention, the magnetic modulation rings in a magnetic gear are replaced by the stator teeth, thereby simplifying the machining process, improving the reliability of the device and reducing the system manufacturing cost.

The invention provides a vertical turbocharger. The vertical turbocharger comprises an air compressor, a middle body, a rotor shaft, a turbine, a sealing ring and a non-liquid oil lubrication bearing, wherein the rotor shaft is perpendicular to the ground, the air compressor and the turbine are arranged at the upper end and the lower end of the rotor shaft respectively, an axial thrust bearing is arranged between the lower end of the rotor shaft and a turbine shell of the turbine, the middle body is arranged between the air compressor and the turbine, the two ends of the middle body are respectively connected with the air compressor and the turbine, the middle body is matched with the rotor shaft through the non-liquid oil lubrication bearing, the sealing ring is arranged between the end, close to the turbine, of the middle body and the rotor shaft, an air inlet of the air compressor and an air inlet of the turbine are both radial air inlets, and an air outlet of the air compressor and an air outlet of the turbine are both radial air outlets. The vertical turbocharger eliminates the influences of the gravity of a rotor on system stability, improves dynamics performance of the turbocharger, and improves the pneumatic efficiency, the pressure ratio and the mechanical efficiency. Compared with a traditional turbocharger, the vertical turbocharger is more compact in structure, and smaller in gas flow loss.

The invention discloses a pole-changing memory motor with fractional-slot concentrated windings without changing winding arrangement. The pole-changing memory motor comprises a stator and a rotor, wherein the stator comprises a stator core and armature windings; the fractional-slot concentrated windings are adopted as the armature windings and are sequentially arranged according to phase sequences; and the rotor comprises a rotor core, high-coercivity permanent magnets and low-coercivity permanent magnets. According to the pole-changing memory motor disclosed by the invention, the winding connection mode does not need to be changed before and after pole changing and only the phase sequences of two phases need to be exchanged; and in the pole changing process, magnetization directions of the low-coercivity permanent magnets are changed through applying direct-axis current pulses in different directions to the armature windings, so that changing of the number of poles of the motor is achieved. The speed range of a permanent magnet motor can be expanded through pole-changing speed regulation, the iron loss of the motor in a high-speed area can be effectively reduced and the operating efficiency of the motor in the high-speed area is improved.

The invention relates to a control system for speed of a rotor of a hybrid stepping motor and a control method therefor used for inhibiting the rotating oscillating of the rotor in a speed / position open-loop driving system of the hybrid stepping motor. The device and the method adopt a stator flux closed-loop structure. In the preferred embodiment, a bandpass filter is also utilized for extracting the flutter component in an electromagnetic torque, and the rotor position angle flutter component is obtained through integration thereof. The stator flux phase is modulated in real time by the rotor position angle flutter component so as to inhibit the rotor oscillating. The invention has the advantages that the cost is low, no position angle accumulated error occurs in the rotating of the rotor, the range of the operating speed of the motor is wide, and the load capability of the motor in medium and high speed is strong.

The invention relates to a rotating jet internal combustion engine. The rotating jet internal combustion engine comprises an electric control unit, a rotating jet combustion chamber assembly, an air compression system, an air storage device, a cooling system, a fuel supply system, a lubricating system, power generation storage equipment, an emergency starting motor and a tail gas treatment device. The fuel supply system is connected with the air compression system; the air compression system is connected with the air storage device; the air storage device is connected with the rotating jet combustion chamber assembly; the rotating jet combustion chamber assembly is connected with a power output shaft; the power output shaft is connected with the air compression system; the rotating jet combustion chamber assembly is further connected with the cooling system and the tail gas treatment device. According to the rotating jet internal combustion engine, the air storage tank is combined with the rotating jet combustion chamber assembly, a fuel and air mixture is combusted in the rotating jet combustion chamber assembly to output power, and the internal combustion engine can stably run under various working conditions; the problems that an existing internal combustion engine is low in heat efficiency, narrow in working rotating speed range and the like are solved; the internal combustion engine has the advantages of being wide in working rotating speed range, high in compression ratio, high in combustion efficiency and the like.