2results about How to "Reduce the total" patented technology

The application discloses a single-sensor network-configuration type converter and a control method thereof, relates to the technical field of power electronics and power systems, and comprises a power module composed of a plurality of power switches, an alternating-current filter connected between the power module and a power grid, a direct-current link voltage sensor for measuring a direct-current link voltage, a direct-current link current sensor for measuring a direct-current link current, and an alternating-current voltage sensor for measuring an alternating-current side voltage. A controller receives measurement signals from the direct-current link voltage sensor, the direct-current link current sensor and the alternating-current voltage sensor, reconstructs a converter side current from the measured direct-current link current based on a current reconstruction strategy, performs power measurement by using the reconstructed converter side current and the measured capacitor voltage, and generates a control signal to drive on-off of the power switches according to the measured power, a reference value of the measured power and the direct-current link voltage. The method significantly reduces the hardware cost, volume and complexity of the system.

This application relates to the technical field of hybrid vehicle transmissions, and discloses a hybrid transmission drive system, which includes an engine and a generator, a drive motor, and a differential arranged around the engine. By integrating the drive motor rotor shaft and the differential coaxially, an independent shaft system is eliminated, and the overall volume is reduced, forming a compact four-shaft layout, which is suitable for small vehicles and solves the problem of the layout of traditional five-shaft transmissions; the drive motor rotor shaft and the first-stage driving gear, and the generator rotor shaft and the power generation driven gear are respectively designed coaxially as a whole, reducing spline fits, improving transmission efficiency and stability, and extending the service life of components; the coaxial design of the drive motor and the differential allows the lower half of the motor to be immersed in the oil, achieving dual optimization of lubrication and cooling, reducing temperature rise, fully lubricating the bearings, and improving motor efficiency; the shaft system is streamlined to 4, the total number of components is reduced, the volume and weight of the housing are reduced, the manufacturing cost is decreased, and maintenance is more convenient.