2results about How to "Increase starting torque" patented technology

This invention relates to the field of micro-power generation technology, and more particularly to an integrated micro permanent magnet direct-drive generator. The generator includes: a duct housing, a turbine, a permanent magnet power generation unit, a flow field monitoring module, and a control unit. This invention designs the inner wall of the duct as a composite curved surface with a specific helical waveform and axial contraction, precisely matching its key shape parameters with the aerodynamic design point of the turbine. This allows the airflow to be accelerated by the Venturi effect as it passes through the duct, and further endowed with tangential momentum consistent with the turbine's rotation direction by a controllable helical bulge structure. Simultaneously, based on real-time monitoring of the outlet swirl intensity and load closed-loop control, the optimal aerodynamic matching state is dynamically maintained. Furthermore, monitoring of characteristic pressure distribution enables early warning of duct performance degradation, effectively solving the problem of reduced power generation efficiency caused by mutual interference of airflows due to the use of multiple parallel independent flow guiding mechanisms.

This utility model provides a rotor hook-slot structure for a DC motor, including rotor hooks and rotor slots, both located on the outer circumference of the rotor and evenly arranged in a ring on the outer circumference. The rotor hooks are provided in numbers of 12, and the rotor slots are provided in numbers of 18. A wire group extends outward from the rotor hooks and winds around the rotor slots. This rotor hook-slot structure for a DC motor, by increasing the number of rotor slots to 18 (no longer corresponding to a single slot), reduces the current density in a single slot, thereby reducing the impact of armature current on the main magnetic field, helping to reduce magnetic field inhomogeneity, thus reducing sparks during electrolysis and improving commutation performance.