3results about How to "Reduce reactive power" patented technology

The application discloses a permanent magnet electric drive aluminum strip tension leveling machine process parameter optimization method and system, and belongs to the technical field of metal material finishing. The method comprises the following steps: system initialization is performed, and a coupling mathematical model between process parameters and electromagnetic drive control variables is established; based on the established model, a hierarchical strategy including process parameter pre-selection, drive parameter multi-objective optimization and online fine adjustment is adopted, and an optimal process parameter set is dynamically solved; heat compensation is performed on the current instruction output by the optimization according to the real-time temperature of the permanent magnet motor, so as to offset the torque attenuation caused by temperature rise; and case data of each successful tension leveling is stored in a knowledge base, so that online self-learning and inheritance of experience are realized. The application solves the problems of straightening quality fluctuation, high energy consumption and short service life of components caused by mismatching of the permanent magnet direct drive system and traditional process parameters, and significantly improves the elongation control precision, surface quality and energy efficiency.

The present application relates to the technical field of wireless power transmission, and particularly relates to a coil arrangement design method and system of a multi-relay wireless power transmission structure, steps as follows: determining the transmission distance according to the voltage level; under the constraint of the transmission distance, introducing the arrangement ratio to represent the ratio of the second interval between adjacent groups in the non-equidistant grouping arrangement and the first interval between the coils in the same group, and establishing a geometric parameterized model of the non-equidistant arrangement; constructing the coupling impedance matrix based on the mutual inductance theory, and deducing the system energy transmission efficiency model; for different candidate values of the coil series, on the basis of the given coil parameters, the efficiency distribution curve of the system efficiency changing with the arrangement ratio is obtained by adjusting the arrangement ratio; based on the efficiency distribution curve, the optimal coil series and the corresponding optimal arrangement ratio that make the system energy transmission efficiency optimal are determined, and the optimal design scheme of the coil arrangement design is obtained. The present application can effectively improve the stability of system operation, the reliability of coil interface combination and the overall insulation stability.