Disclosed is a power calculation method of a magnetic circuit. In view of the power problem of a magnetic circuit and the phase problem of a magnetomotive force (MMF) and a magnetic flux in the magnetic circuit, the present disclosure draws a magnetic circuit vector diagram based on an equivalent magnetic circuit vector model, and provides a method for calculating virtual magnetic active power, virtual magnetic reactive power, and virtual magnetic complex power of the magnetic circuit by analyzing the MMF, the magnetic flux, the reluctance, and the magnetic reactance in the magnetic circuit by using the magnetic circuit vector diagram. A mathematical relationship between the virtual magnetic power of the magnetic circuit and the electric power of the corresponding equivalent electric circuit is derived according to a conversion factor between the virtual magnetic power and the electric power, so that the electric power can be directly calculated according to magnetic parameters such as the MMF and the magnetic flux in the magnetic circuit. The power calculation method of the magnetic circuit provided in the present disclosure can calculate and analyze the virtual magnetic power of the magnetic circuit according to the magnetic circuit vectors, so as to calculate the electric power from the magnetic circuit through conversion. The electric power can be solved according to the magnetic circuit vectors directly when the electric vectors are not available to calculate electric power in electromagnetic components.

The accuracy of photovoltaic simulation modeling is predicated upon the selection of a type of solar resource data appropriate to the form of simulation desired. Photovoltaic power simulation requires irradiance data. Photovoltaic energy simulation requires normalized irradiation data. Normalized irradiation is not always available, such as in photovoltaic plant installations where only point measurements of irradiance are sporadically collected or even entirely absent. Normalized irradiation can be estimated through several methodologies, including assuming that normalized irradiation simply equals irradiance, directly estimating normalized irradiation, applying linear interpolation to irradiance, applying linear interpolation to clearness index values, and empirically deriving irradiance weights. The normalized irradiation can then be used to forecast photovoltaic fleet energy production.

Disclosed is a power calculation method of a magnetic circuit. In view of the power problem of a magnetic circuit and the phase problem of a magnetomotive force (MMF) and a magnetic flux in the magnetic circuit, the present disclosure draws a magnetic circuit vector diagram based on an equivalent magnetic circuit vector model, and provides a method for calculating virtual magnetic active power, virtual magnetic reactive power, and virtual magnetic complex power of the magnetic circuit by analyzing the MMF, the magnetic flux, the reluctance, and the magnetic reactance in the magnetic circuit by using the magnetic circuit vector diagram. A mathematical relationship between the virtual magnetic power of the magnetic circuit and the electric power of the corresponding equivalent electric circuit is derived according to a conversion factor between the virtual magnetic power and the electric power, so that the electric power can be directly calculated according to magnetic parameters such as the MMF and the magnetic flux in the magnetic circuit. The power calculation method of the magnetic circuit provided in the present disclosure can calculate and analyze the virtual magnetic power of the magnetic circuit according to the magnetic circuit vectors, so as to calculate the electric power from the magnetic circuit through conversion. The electric power can be solved according to the magnetic circuit vectors directly when the electric vectors are not available to calculate electric power in electromagnetic components.

A measuring device for measuring current effective power in a circuit of a transmission system, including an evaluation device and a calibration device, the evaluation device having a connection for measuring current, voltage, and phase shift between the current and the voltage in the circuit, wherein the evaluation device and the calibration device are connected to one another, the evaluation device configured to measure power by evaluating measured current and measured voltage, the calibration device configured to correct the measured current and/or the measured voltage via a cos ( ) value of a measured phase shift between the measured current and the measured voltage and/or via a holding time, the evaluation device configured to calculate a power value with a corrected value of the measured current and/or a corrected value of the measured voltage, and the calibration device configured to make available the calculated power as the current effective power.

The invention concerns a method for measuring a power (Pe, Pm) of an electric motor, that involves measuring a real current (I) of the motor, by means of a measurement sensor (11), the invention being characterised in that it involves inputting, on an interface (20), at least one piece of nominal power data (Pn), one piece of nominal speed data (Wn), one piece of nominal current data (In), one piece of nominal voltage data (Un), one piece of power factor data (cos φ) and the real current (I) of the engine, calculating, in the computer, a no-load current of the motor according to a first stored function depending on at least the data (Pn, In, Un, cos φ), calculating, in the computer, the active power (Pe) and/or the mechanical power (Pm) and/or the active energy and/or the mechanical energy according to at least one second stored function depending on at least the data (Pn, In), the real current (I) and the no-load current that has been calculated, and providing the power that has been calculated on an output interface (24).

System and methods for plausibility check in vehicle-to-everything dynamic environments in which a local vehicle communicates with remote vehicles. The system comprises means for obtaining a measured RSSI from a specific remote vehicle, and a modified plausibility check unit configurable and operable to apply a dynamic RSSI model to detect implausible positioning of the specific remote vehicle and/or of the local vehicle based on the measured RSSI of the specific remote vehicle and on a RSSI calculated for the specific remote vehicle. Decisions on respective further actions to be performed by the specific remote vehicle and by the local vehicle are made based on respective plausibility checks applied to both vehicles using the dynamic RSSI model.

A measurement system for an electrical installation includes at least one voltage measurement module and at least one current measurement module , which are coupled to the electrical installation, each measurement module including a sensor, a processor, a memory and a clock. A method for determining an electrical quantity in the installation allows the current measurement module to determine, for each synchronization signal received from the voltage measurement module, successive delay correction values on the basis of a main timestamp datum received from the voltage measurement module and a locally calculated timestamp datum. The successive current measurements taken by the current measurement module are timestamped by the module using the clock thereof, taking into account the delay correction values thus determined.

A method for analyzing power quality events in an electrical system includes processing electrical measurement data from or derived from energy-related signals captured by at least one metering device in the electrical system to generate at least one dynamic tolerance curve. Each dynamic tolerance curve of the at least one dynamic tolerance curve characterizes a response characteristic of the electrical system at a respective metering point in the electrical system. The method also includes analyzing the at least one dynamic tolerance curve to identify special cases which require further evaluation(s)/clarification to be discernable and/or actionable. The at least one dynamic tolerance curve may be regenerated or updated, and/or new or additional dynamic tolerance curves may be generated, to provide the further clarification. One or more actions affecting at least one component in the electrical system may be performed in response to an analysis of the curve(s).

An energy management system controlling energy flowing into or out of a battery is provided. The energy management system includes a data receiving unit receiving load data and energy data; a total load amount calculating unit calculating the total amount of power consumption by using the received load data; an energy generation amount calculating unit calculating the total amount of power generation by using the received energy data; a comparator comparing the calculated total amount of the power consumption with the calculated total amount of the power generation; and a switch connecting the battery to a power supply according to a comparison result.

This disclosure describes a miniaturized energy-monitoring device that can be powered through an Internet port, which also facilitates the programming the device and transmitting energy consumption data to a remote device for recording and analyzing.