6results about How to "Improve starting performance" patented technology

The invention relates to the technical field of electric driving systems, and discloses an electric driving system with a hydraulic torque converter and a forklift. The system comprises a driving motor, a hydraulic torque converter, a speed reducer and a vehicle control unit, wherein a lock-up clutch is integrated in the hydraulic torque converter; an output shaft of the driving motor is connected with a pump wheel input side of the hydraulic torque converter; a turbine output side of the hydraulic torque converter is connected with an input shaft of the speed reducer; the output end of the reducer is connected with a vehicle drive axle; when the vehicle is in the low-speed large-torque demand working condition, the lock-up clutch is controlled to be separated, so that the hydraulic torque converter works in the torque conversion working condition, and when the vehicle is in the low-speed large-torque demand working condition, the lock-up clutch is controlled to be separated; and when the vehicle is in a high-speed small-torque demand working condition, the lock-up clutch is controlled to be engaged, so that the pump wheel of the hydraulic torque converter is mechanically locked with the turbine, and the vehicle is in a coupler working condition. The power performance and the energy efficiency of the vehicle are improved, the cost of the electric drive system is reduced, and the economical efficiency and the NVH performance are improved.

The invention provides a rotor assembly of a self-starting permanent magnet auxiliary synchronous reluctance motor and a motor, the rotor assembly comprises a rotor iron core and permanent magnets, the rotor iron core comprises an outer layer filling groove, an inner layer filling groove, permanent magnet grooves, a shaft hole and a rotor excircle, the shaft hole is located at the central axis position of the rotor iron core, and the permanent magnet grooves are located in the outer layer filling groove. The permanent magnet grooves are located in the periphery of the shaft hole so that the permanent magnets can be arranged in the permanent magnet grooves, the inner-layer filling grooves are located between the permanent magnet grooves and the outer circle of the rotor, and the outer-layer filling grooves are located between the inner-layer filling grooves and the outer circle of the rotor. The permanent magnet grooves, the inner-layer filling grooves and the outer-layer filling grooves form a magnetic barrier layer in the radial direction of the rotor, and the inner-layer filling grooves and the outer-layer filling grooves are filled with conductive conductors. According to the self-starting permanent magnet auxiliary synchronous reluctance motor, the problem of low starting torque of the self-starting permanent magnet auxiliary synchronous reluctance motor in the prior art can be solved.

This application provides a motor rotor, a method for manufacturing the same, and a self-starting synchronous reluctance motor. The motor rotor includes a rotor core with magnetic barrier slots and a central shaft hole. The magnetic barrier slots include a Q-axis magnetic barrier slot located on the outermost side of the Q-axis and a D-axis magnetic barrier slot located between the Q-axis magnetic barrier slot and the central shaft hole, extending along the D-axis. The D-axis magnetic barrier slot includes a non-cast aluminum region and cast aluminum regions located at both ends of the non-cast aluminum region. The Q-axis magnetic barrier slot and the cast aluminum regions are filled with a conductive but non-magnetic material. Rotor baffles are provided at both ends of the rotor core. Each rotor baffle has a shielding portion capable of shielding the non-cast aluminum region. A connecting magnetic barrier slot is provided on the rotor baffle corresponding to the Q-axis magnetic barrier slot and the cast aluminum region. An end ring is provided outside the rotor baffle, at least partially covering the non-cast aluminum region. According to the motor rotor of this application, the volume of the end ring can be increased, improving the motor's starting capability.

The invention provides a rotor of a two-pole synchronous reluctance motor and the two-pole synchronous reluctance motor. The rotor comprises a radial magnetic flux rotor iron core which is coaxially arranged with a transmission shaft of the two-pole synchronous reluctance motor. A plurality of magnetic isolation grooves which extend in the d-axis direction of the rotor and penetrate through the rotor iron core in the axial direction of the rotor are formed in the rotor iron core, and the lamination plane of the rotor iron core comprises a first area overlapped with the projection of the transmission shaft in the d-axis direction of the rotor; the magnetic isolation grooves, located in the first area, in the multiple magnetic isolation grooves are filled with a conductive material. Compared with a traditional asynchronous starting dipolar ferrite permanent magnet synchronous reluctance motor, the dipolar ferrite permanent magnet synchronous reluctance motor and the rotor of the dipolar ferrite permanent magnet synchronous reluctance motor have the advantages that the starting capability and locked-rotor torque of the motor are obviously improved, the average torque and power density can be improved, the power factor of the motor is improved, and the efficiency of the motor is improved.

This utility model discloses an AC starting system for generator sets, belonging to the field of engine technology, which solves the problems of insufficient torque and easy motor overheating in existing generator sets during continuous use. The AC starting system includes a motor power output system, the output end of which meshes with a flywheel ring gear. It also includes an AC starter motor and a belt. The AC starter motor is mounted on one side of the engine, with a drive pulley at its output end and a driven pulley at the power input end of the motor power output system. The drive pulley and driven pulley are connected by a belt drive. The bottom of the AC starter motor has an adjustment device for adjusting the belt tension, including an upper base and a lower base. The AC starter motor is mounted on the upper base. This AC starting system for generator sets can be used continuously for extended periods.

The embodiment of the application provides a civil large-bypass-ratio turbofan engine windmill performance flight test method, and relates to the technical field of airplane engines. The civil large-bypass-ratio turbofan engine windmill performance flight test method aims at improving the problem that the windmill starting performance of the civil large-bypass-ratio turbofan engine needs to be further improved. The civil large-bypass-ratio turbofan engine windmill performance flight test method comprises the following steps: obtaining a windmill performance flight test point; controlling a test engine to perform a windmill performance flight test according to the priority of the windmill performance flight test point; and recording windmill performance according to the windmill performance flight test. Through the civil large-bypass-ratio turbofan engine windmill performance flight test on a flight platform, an engine overall performance windmill state model is checked and corrected, and the windmill starting performance of the civil large-bypass-ratio turbofan engine is improved.