132 results about "Electrical model" patented technology

The present invention disclosures a test system and test method for a simulation experiment of gas hydrate in a porous medium. The test system comprises a reactor, a sensor system, a hardware interface apparatus and a data processing system; the reactor is used for containing tested medium, the sensor system is mounted inside the reactor, and the sensor system is connected to the data processing system through the hardware interface apparatus; the test method comprises a procedure of experiment and measurement data acquisition, and a procedure of analyzing and processing measurement signals; by establishing of electrical model I, acoustic model II and the fused model III, realizing the simulation of the synthesis/decomposition processes of gas hydrate in the deposits in laboratory environment and implementation of the acoustic and electrical parameters combined test, an accurate gas hydrate saturation calculation model can be established at last.

The invention relates to an equivalent modeling method based on wind speed distribution characteristics in a wind power plant. The equivalent modeling method comprises the following steps: acquiring the topological structure of a target wind power plant; performing grouping on wind turbines in the plant according to the terrain condition, wherein each group includes a plurality of wind turbine clusters; establishing a simplified mechanical model for each wind turbine cluster; establishing an equivalent single-generator electrical model of the whole wind field comprising a coil wound rotor asynchronous generator state space model, wherein the stator side is directly connected with an equivalent unit transformer, and the rotor side is connected with an equivalent back-to-back converter; and setting the set value of the voltage of a direct-current bus to be the same as the voltage of a single generator, wherein the pulse width modulation control strategy of the power grid side and the rotor side is replaced with an equivalent controlled voltage source, and an equivalent converter model is established. The modeling method can be used to better satisfy requirements of practical applications.

The invention discloses an equivalent circuit model for a schottky diode, which comprises a single-body part model of the schottky diode, as well as parasitic resistor and parasitic inductance parts which are serially connected with the single-body part of the schottky diode. Two port parts of the model are in parallel connected with a parasitic PN junction structure and a parasitic silicon substrate structure respectively. The model integrally comprises the influence of various parts related to a physical structure of the schottky diode on electrical characteristics of direct current and high frequency of the schottky diode, so the model can be directly used for circuit simulation of direct current and high frequency of the schottky diode, and can be conveniently used for stimulating the electrical characteristics of direct current and high frequency of the schottky diode. The invention also provides a test flow and a parameter extraction method based on the model, which can largely improve the extraction efficiency of parameters of an equivalent circuit electrical model of the schottky diode and the fitting effect of the model on electrical characteristics of devices.