1677 results about "Voltage stability" patented technology

A mixture of materials can be used within a layer of an electronic device to improve electrical and physical properties of the layer. In one set of embodiments, the layer can be a dielectric layer, such as a gate dielectric layer or a capacitor dielectric layer. The dielectric layer can include O, and two or more dissimilar metallic elements. In one specific embodiment, two dissimilar elements may have the same single oxidation state and be miscible within each other. In one embodiment, the dielectric layer can include an alloy of (HfO2)(1-x)(ZrO2)x, wherein x is between 0 and 1. Each of Hf and Zr has a single oxidation state of +4. Other combinations are possible. Improved electrical and physical properties can include better control over grain size, distribution of grain sizes, thickness of the layer across a substrate, improved carrier mobility, threshold voltage stability, or any combination thereof.

A power supply apparatus which supplies power to an amplifier, includes: a regulator stabilizing a voltage of the power supplied to the amplifier; and a stabilizing controller obtaining an amplitude level of an input signal inputted to the amplifier and controlling a stability of the voltage by the regulator based on the amplitude level.

The invention relates to an electrical power system and provides a network security constraint of a processing system in a traditional optimized operation problem of electrical power system economic dispatch. The network security constraint comprises a branch power flow constraint, a static voltage stability constraint and a transient stability constraint, and provides an effective way for coordinating contradiction between economy and security. A security constraint economic dispatch method based on the security domains comprises a first step of respectively calculating an active static security domain boundary coefficient, a cut-set voltage stability domain boundary coefficient and a movable security domain boundary coefficient, a second step of building a security constraint economic dispatch model based on the security domains, a third step of utilizing social evolutionary programming based on cognition to work out the unit start-stop state optimization sub-problem, a fourth step of calculating out power generation cost, static voltage stability margin and transient stability margin of each unit in dispatching cycle, and a fifth step of obtaining a feasible economic dispatch scheme, or returning to the third step. The security constraint economic dispatch method is mainly applied to electrical power load dispatch optimization.