37 results about "Scalar potential" patented technology

An improved method is disclosed for collecting or assembling scalar potential data measurements that are to be subsequently prepared as a surface representation for analysis via frequency domain transform filters. Measurements are made over a geographic reference region which extends in all cardinal directions from the center of some previously determined primary region. The reference dimensions must contain the primary region and must be plural multiples of the greatest depth to be considered in analyzing the contributions to the measurements. A combined or separate improved method for delineating or defining geospatial information contributing to a scalar potential surface is disclosed. This method is implemented using traditional statistical techniques to construct an histogram from the set of values comprising a surface representation. This histogram constitutes a Spatially Correlated Potential Spectrum for the surface. These combined and separate methods improve resolution of geological structures over depths and spatial extents under consideration.

The invention relates to an electric conductivity rebuilding method for magnetocaloric acoustical imaging. The electric conductivity rebuilding method is based on a magnetocaloric acoustical imaging principle. An exciting coil is used for exerting MHz current excitation on a conducting object, joule heat is generated in the conducting object, and further, ultrasonic signals are generated. An ultrasonic transducer is used for receiving the ultrasonic signals, the received ultrasonic signals are processed and collected, and then, an electric conductivity image of the conducting object is obtained by adopting an electric conductivity image rebuilding algorithm. The electric conductivity rebuilding method comprises the concrete steps that 1, firstly, high-signal-to-noise-ratio magnetocaloric acoustical signals are obtained; 2, the obtained magnetocaloric acoustical signals are used for rebuilding to obtain thermal sound source distribution of the conducting object; 3, the thermal sound source distribution and a one-order magnetic vector space component are used, and a non-linear finite element solution method is adopted for rebuilding a scalar potential space component; 4, the rebuilt scalar potential space component is used for rebuilding the electric conductivity.

The invention discloses a transformer vortex field finite element solving method based on a sinc function. According to the method, first, a model is established for a transformer, and then meshing isperformed on the established model according to a finite element method; the finite element method is adopted to calculate a stiffness matrix and a damping matrix of the model according to unit nodeinformation obtained through meshing; and a magnetic vector potential and a scalar potential are selected to serve as an unknown function of a vortex field mathematical model, a discretization formatis exported through a Galerkin finite element method, a discretization equation set is established, solutions of the discretization equation set are solved through a sinc interpolation method, electric field distribution and magnetic field distribution in a transformer solving domain can be obtained according to the solutions of the equation set, and therefore vortex distribution and loss of the transformer can be calculated. The method is simple in design, easy to implement and easy to popularize, provides more precise analysis for vortex field and loss calculation of large and ultra-large power transformers, provides a basis for transformer design and manufacturing and improves the security and stability of transformer operation.