5results about How to "Reduce copper consumption" patented technology

This invention discloses a six-phase reactor for an energy storage converter, belonging to the field of reactor technology. It includes a first reactor assembly and a second reactor assembly. The first reactor assembly includes a first base, which is composed of a U-shaped support plate and an L-shaped support plate, allowing for independent and stable placement. The second reactor assembly includes a second base, mainly composed of an L-shaped support plate, which is temporarily stabilized during manufacturing using a detachable support fixture. After each reactor assembly independently completes overall impregnation and drying, the support fixture is removed. Then, the surfaces of the terminals and connectors to be connected in parallel are polished and the paint is removed. The two bases are then fixed using base connectors, and the corresponding phase terminals are electrically connected in parallel using a phase-parallel connector to form a six-phase output. This invention, through differentiated base design and fixture assistance, allows the two reactors to be impregnated separately before being connected in parallel, balancing impregnation process quality and electrical connection reliability, and also helps to reduce the overall size of the unit.

This utility model relates to the field of synchronous variable frequency motor technology, and provides a permanent magnet synchronous variable frequency motor for tractors, including a stator and a rotor. The rotor adopts a hollow permanent magnet structure, with multiple permanent magnets evenly embedded in the rotor core along the circumferential direction. Multiple weight-reduction slots are provided on the outer side of the rotor core. Weight-reduction holes are provided on the rotor laminations, and the motor's drive shaft has no shaft-mounted fan structure. Compared with asynchronous motors, the permanent magnet motor provided by this utility model has a smaller volume for the same power, and the weight reduction measures make the permanent magnet synchronous motor for tractors lighter and more compact. Because the rotor of the permanent magnet motor uses permanent magnets, the overall current of the motor is reduced, and the heat generated by the motor is also reduced. Furthermore, removing the fan connected to the drive shaft further reduces the motor's weight. The use of a permanent magnet motor for tractors reduces copper losses and improves overall operating efficiency.

The application discloses a standard phase belt integer slot short-pitch lap winding symmetrical 4-branch connection method, which comprises the following steps: 1) dividing positive and negative phase belts, and dividing p-pole pairs into j normal pole pairs and k special pole pairs; 2) connecting coils under the j normal pole pairs according to normal winding pitch y1; 3) performing phase-to-phase exchange on lower-layer coil edges under the k special pole pairs; and 4) recombining the upper and lower-layer coil edges under the k special pole pairs and constructing winding branches. The winding formed by the method of phase-to-phase exchange of the lower-layer coil edges can weaken high-order harmonics, the branches of each phase are completely symmetrical in electric potential and magnetic potential, and there is no circulating current between the parallel branches; the three-phase branches are also completely symmetrical; the connection problem of the short-pitch lap winding symmetrical 4-branch is solved, the advantages of the lap winding are still embodied, the copper consumption of the motor winding is significantly reduced, and the theoretical limitation that the short-pitch symmetrical 4-branch winding cannot be connected under the odd number of pole pairs is broken through.

This utility model provides a continuous stator winding, a stator, and a motor, including a multi-phase winding. Each phase winding includes multiple branch windings arranged in parallel. Each branch winding has a continuous winding structure. The multiple branch windings are arranged in multiple groups. The multiple branch windings in each group are arranged adjacent to each other. The corresponding ends of two adjacent groups of branch windings are located in adjacent magnetic poles. In each slot of the stator core, multiple layers are arranged along the radial direction of the stator core. Each group of branch windings is arranged sequentially in each layer along the radial direction of the stator core. In each layer, they are arranged sequentially in the corresponding slots of each magnetic pole along the circumferential direction of the stator core. In each layer, adjacent groups of branch windings have at least one crossing position. At the crossing position, the adjacent groups of branch windings are swapped, without connecting solder joints. The axial length of the stator core is reduced, resulting in high reliability and lower material costs.

This utility model relates to the field of low-voltage switchgear technology, specifically a drawer unit, including a circuit breaker, a manual operating mechanism, and a closing interlocking mechanism. The manual operating mechanism of the circuit breaker is a central manual operating mechanism, with the center of the opening / closing handle and the center A of the circuit breaker both offset to the left relative to the center B of the unit, and the left offset distance L is the same. When the drawer unit is a 600mm wide drawer unit, the left offset distance L is 30-50mm; when the drawer unit is a 500mm wide drawer unit, the left offset distance L is 30-40mm. The locking part of the closing interlocking mechanism is located on the left side of the manual operating shaft. The beneficial effects are: all current specifications of circuit breakers in PC circuit drawer units with cabinet widths of 600mm and 500mm can use a central manual operating mechanism, eliminating the need for an eccentric manual operating mechanism; the fixed position of the circuit breaker center within the unit can also be standardized, simplifying the unit's component layout design and main circuit connection structure design, increasing standardization, and reducing copper usage, with the main circuit connection structure saving 8.8% of copper.