In a power system stabilization device and power system stabilization method, an excess/shortage of control is prevented and an appropriate control suitable for the system state is enabled. A power system stabilization device including a central processing unit in which there is determined, in advance, a device subject to control necessary to maintain stability when an assumed failure in a power system including renewable energy occurs, wherein the central processing unit executes, for each of a plurality of assumed failures, a computation for determining a subject of control necessary to maintain stability at the time of the assumed failure, and determines, in accordance with an output fluctuation scenario for renewable energy pertaining to the weather, the degree of priority of performing a computation for determining a subject of control necessary to maintain stability at the time of each of the assumed failures.

A signal generating device for generation of measurement signals for an electrical system includes a housing which features an electrically conducting material, an energy reservoir arranged in the housing, a data interface arranged at the housing and designed to receive signal data, a coupling interface arranged at the housing and coupled to the electrical system, and a signal generator arranged in the housing. The signal generator is coupled to the electrical energy reservoir, to the data interface and to the coupling interface. The signal generator is designed, based on the signal data, to generate the measurement signals and to output them via the coupling interface. A corresponding measuring device is also included.

A signal generating device for generation of measurement signals for an electrical system includes a housing which features an electrically conducting material, an energy reservoir arranged in the housing, a data interface arranged at the housing and designed to receive signal data, a coupling interface arranged at the housing and coupled to the electrical system, and a signal generator arranged in the housing. The signal generator is coupled to the electrical energy reservoir, to the data interface and to the coupling interface. The signal generator is designed, based on the signal data, to generate the measurement signals and to output them via the coupling interface. A corresponding measuring device is also included.

A peak detector circuit comprises a first output coupled to ground by a first load and to emitter terminals of first and second switching devices. A second output is coupled to ground by a second load and to emitter terminals of third and fourth switching devices. A third output is coupled to a supply voltage node by a third load and to collector terminals of the first and second switching devices. A fourth output is coupled to the supply voltage node by a fourth load and to collector terminals of the third and fourth switching devices. The first, second, third, and fourth switching devices have control terminals which are biased with a common bias voltage. The first, second, third and fourth load are selected so that R1=R2=αf*R3=αf*R4, with R1, R2, R3, R4 being a resistance of the first, second, third and fourth loads, respectively, and αf a common-base current gain of the switching devices.

A peak detector circuit comprises a first output coupled to ground by a first load and to emitter terminals of first and second switching devices. A second output is coupled to ground by a second load and to emitter terminals of third and fourth switching devices. A third output is coupled to a supply voltage node by a third load and to collector terminals of the first and second switching devices. A fourth output is coupled to the supply voltage node by a fourth load and to collector terminals of the third and fourth switching devices. The first, second, third, and fourth switching devices have control terminals which are biased with a common bias voltage. The first, second, third and fourth load are selected so that R1=R2=αf*R3=αf*R4, with R1, R2, R3, R4 being a resistance of the first, second, third and fourth loads, respectively, and αf a common-base current gain of the switching devices.

A method includes measuring first travelling wave power of a microwave having a single frequency peak and second travelling wave power having a single frequency peak, acquiring duty ratios of the first travelling wave power and the second travelling wave power based on measured values and a first determination threshold value, measuring third travelling wave power of a microwave having a bandwidth and fourth travelling wave power having a bandwidth, acquiring duty ratios of the third travelling wave power and the fourth travelling wave power based on measured values and a second determination threshold value, approximating a pulse width error between the first travelling wave power and the third travelling wave power and a pulse width error between the second travelling wave power and the fourth travelling wave power with linear functions, and determining the correction function based on the linear functions.

A method includes setting a setting duty ratio of a pulse to a predefined first setting duty ratio, detecting a measured value of power of a microwave, and calculating an error of the measured value of the power with respect to the setting power level for each setting power level, calculating a correction value for the power for each setting power level on the basis of the error, and determining a first function indicating a relationship between the setting power level and the correction value by logarithmically approximating the relationship between the setting power level and the correction value, and determining the correction function indicating a relationship among the setting duty ratio, the setting power level, and the correction value by approximating the correction value defined by the first function, and the predefined correction value at a setting duty ratio of 100%, with a linear function.

An example log power detector includes a gain or attenuation circuit and a detector circuit. The gain or attenuation circuit includes a plurality of gain or attenuation elements arranged in a sequence, each gain or attenuation element configured to generate an output signal that is an amplified or attenuated version of an input signal provided thereto. The detector circuit includes a plurality of detectors, each detector configured to receive the output signal from a different one of the gain or attenuation elements and to generate a signal indicative of a power of the received output signal. At least the last detector is configured to receive a DC offset signal that is different from a DC offset signal received by at least one other detector. Such a log detector may provide effective noise compensation to reduce errors caused by input noise, especially for low-power and/or high-frequency input signals.

An electronic device may include signal transmission circuitry such as wireless circuitry having a signal source, a signal path, and an output node coupled to an output load. The signal source may transmit a signal to the output load over the signal path. The output load may have an impedance characterized by a first reflection coefficient. A signal coupler may be disposed on the signal path. A power detector coupled to a coupled node of the signal coupler may measure a voltage at the third node. A termination coupled to an isolated node of the signal coupler may include components that cause the termination to exhibit a second reflection coefficient. The second reflection coefficient may be selected to configure the voltage at the third node to track a power wave at the output load to within a constant that is invariant as the first reflection coefficient changes over time.

Apparatuses and methods for rapid heating a load having magnetic material(s). In some embodiments, the apparatus includes a source of radio frequency (RF) signals and a power management assembly that receives the RF signals and that increases or decreases power of the RF signals. The apparatus additionally includes directional coupler(s) that measure power of the RF signals received from the power management assembly and power of the RF signals reflected from the load to the at least one directional coupler. The apparatus further includes a control assembly operable to receive the measured powers, determine a temperature of the load based on the measured powers, and send one or more control signals to the power management assembly instructing the power management assembly to increase or decrease power of the RF signals received from the source of RF signals to maintain the determined temperature of the load at a predetermined temperature.