3 results about "Tetrode" patented technology

The application belongs to the field of solid-state circuit breakers, and specifically discloses a solid-state circuit breaker based on a tetrode and a control method thereof. The application uses a tetrode as a core switching device to replace a traditional voltage-controlled device. The application has a low on-state voltage drop, directly reducing the normal conduction loss. At the same time, the bipolar conduction mechanism and the tetrode structure bring high robustness, and the positive temperature coefficient characteristic can realize automatic current equalization when multiple tubes are connected in parallel, fundamentally improving the system stability. In addition, the manufacturing process of the device is relatively simple, and has potential cost advantages. In the system, the monitoring and control module realizes rapid fault detection and accurate shutdown, and the buffer energy absorption module effectively suppresses the opening overvoltage, protecting the safety of the device. Through the advantages of the device itself and the system cooperation, the scheme maintains the fast breaking capacity, and realizes lower loss, higher stability and better overall cost.

This invention discloses a method and system for constructing a tetrode model. The method includes: acquiring tetrode constant current characteristic curve data, dividing it into a linear region and a low gate voltage cutoff region according to the user's folder organization method; performing exponential interpolation on the power of the anode current in the linear region based on Ramuel's law, and logarithmic interpolation on the cutoff region, and smoothly splicing the data using a shearing method based on the minimum current curve to construct a two-dimensional matrix space of the anode current, outputting a lookup table model; furthermore, iteratively solving the undetermined coefficients of the Ramuel model using the minimum variance method to obtain an explicit formula model, and comparing it with the interpolated model to select the best one. This invention achieves automated modeling from plotted data to a simulation model, improves the fitting accuracy of the low gate voltage nonlinear region through partitioned interpolation, enhances simulation reliability through dual-model selection, and significantly reduces the cost and threshold of manual modeling.

The utility model provides a ground torch discharging device, which relates to the technical field of petrochemical engineering and comprises a combustion tower, the bottom of the combustion tower is fixedly connected with a base, and a first-stage pipe, a second-stage pipe, a third-stage pipe and a tetrode are arranged on one side of the combustion tower and located above the base. The two ends of the first-stage pipe, the two ends of the second-stage pipe, the two ends of the third-stage pipe and the two ends of the tetrode are all connected with U-shaped pipes through flanges, and the center of the U-shaped pipe at one end is fixedly communicated with an air inlet pipe. According to the ground torch discharging device, the two grading pipes are arranged in the ground torch discharging device, the effect that one grading pipe is standby can be achieved, when one grading pipe is damaged or aged and needs to be replaced, the grading pipe at the position can be closed through the control valve, and the control valve on the other grading pipe can be opened; and the effect that the device still operates when the damaged or aged grading pipe is replaced can be achieved, and therefore the effect of improving the discharging efficiency of the device can be achieved.