9results about How to "Accurate power" patented technology

The embodiment of the invention provides a self-adaptive switching method and device for a network construction mode and a network following mode of an energy storage converter, a storage medium and electronic equipment, and relates to the technical field of grid-connected control of the energy storage converter. Judging the strength of the power grid according to the output result of the primary frequency modulation function of the energy storage converter, and switching to a grid following mode when the strength of the power grid is high; and when the energy storage converter operates in the grid following mode, judging the strength of the power grid according to the variation of the voltage frequency and amplitude before and after the current regulation of the power grid, and switching to the grid construction mode when the strength of the power grid is weak. According to the technical scheme, the dependence on a power grid strength detection function can be weakened, reasonable self-adaptive switching can be realized under relatively simple algorithm complexity, and meanwhile, the requirement on MCU hardware is reduced.

The application provides a coherent optical module optical power calibration method and device, a coherent optical module and a medium, and relates to the technical field of optical communication.In the transmitting end, a responsivity lookup table is formed based on the responsivity of each transmitting light path under different working conditions, and the target sampling voltage corresponding to each transmitting light path is calculated in combination with the dark light voltage and the target value of the transmitting optical power, the gain of the feedback adjustment driver is adjusted, the power accuracy can be ensured, the modulation signals on each transmitting light path can be kept balanced, the joint calibration of the power and the signal quality is realized.In the receiving end, the corresponding relationship between the gain control voltage average value and the received optical power is established, the reference received optical power is obtained, and the accurate actual received optical power can be obtained in combination with the received optical power error under different working conditions in the power error lookup table; the method does not need to additionally configure a photoelectric detector on each received light path, and the chip volume and the design complexity are reduced.

The embodiment of the invention relates to a photovoltaic equipment control method and device, photovoltaic equipment and a storage medium, and the method comprises the steps: determining a power difference value between the photovoltaic output power of the photovoltaic equipment and the load power of the photovoltaic equipment when the photovoltaic equipment is determined to be in a reverse power state; determining the charging current of a capacitive energy storage module of the photovoltaic equipment according to the power difference value; and charging the capacitive energy storage module according to the charging current and the charge state of the capacitive energy storage module, and adjusting the load power according to the charge state. Therefore, the charging current can be determined based on the power difference value, and energy storage charging and load power can be synchronously adjusted in combination with the charge state of the capacitive energy storage module, so that the system can realize rapid and accurate energy absorption and power distribution when reverse power occurs, reverse power delivery is effectively avoided, and the overall regulation and control efficiency and stability are improved.

The invention discloses a control system and method for continuously adjusting the output power of a low-clutter system, and the system comprises a local oscillator source, a power divider, and a plurality of klystron amplification branches connected in parallel, the local oscillator source generates an initial microwave signal, the signal is distributed to each klystron amplification branch connected in parallel through the power divider, and the klystron amplification branches are connected in parallel. A PIN electrically controlled attenuator in the klystron amplification branch receives a control voltage from a control system, and a microwave switch receives a digital switch signal from the control system and is used for on-off control of the branch; the signal processed by the klystron amplification branch is amplified by the klystron and then enters the bidirectional coupler, and the bidirectional coupler is used for coupling sampling signals of incident power and reflection power and sending the sampling signals to the control system; the microwave power output by the bidirectional coupler is injected into the plasma; the method has the advantages that the problem that the power regulation range of an existing system is limited, and particularly continuous regulation cannot be achieved in a low-power section is solved.

This invention discloses an online performance estimation method for fuel cell stacks based on the fusion of multiple models and algorithms, comprising the following steps: obtaining the physical parameters of the fuel cell stack; constructing N voltage estimation models for the fuel cell stack based on the physical parameters; sampling M parameter estimation algorithms to solve the voltage estimation models of the fuel cell stacks, obtaining the constant term coefficients of the voltage estimation models for MN groups of fuel cell stacks; based on a fitness evaluation system, achieving adaptive estimation of the constant term coefficients of the voltage estimation models for the N fuel cell stacks, determining the most matching parameters and corresponding algorithm weights for the current fuel cell operating range; and achieving online estimation of the voltage and power of the fuel cell stack based on the most matching parameters and corresponding algorithm weights for the current fuel cell operating range. This invention improves the accuracy and robustness of parameter estimation across all operating conditions and the entire life cycle, while controlling computational complexity to meet the requirements of real-time applications.

This application provides a power control method, a terminal, and a network device. In the method, when any one of two terminals that perform direct communication determines a transmission power of the terminal, the terminal determines the transmission power based on at least one of a path loss between the two terminals that perform direct communication and a channel quality status of another terminal used as a receive end in the two terminals that perform direct communication, so that a more accurate power can be determined, and therefore signal transmission can be performed based on the determined transmission power, to avoid, to some extent, using a power higher than an actually required transmission power to perform signal transmission.

The invention belongs to the technical field of reactor design and operation, and particularly relates to a nuclear power plant low-power reactor core power measurement method, which comprises the following steps: step 1, measuring the thermal power of a heat source outside a reactor core during the first zero power debugging period; 2, measuring the power of decay heat in a zero power period after power operation; 3, calibrating the time from the current input parameter of the decay heat semi-empirical formula to the shutdown time of the reactor by adopting the decay heat obtained by measurement; and step 4, measuring the reactor core power under low power after operation. According to the method disclosed by the invention, mutual power correction is realized by utilizing heat balance or quasi-heat balance of the primary side and the secondary side of the steam generator, and accurate reactor core power under low power is obtained.

The application provides a gain compensation method, device, optical amplifier and storage medium, and belongs to the technical field of optical communication. The method is applied to an optical amplifier. In the method, after the power of input signal light changes, the power of pump light of the optical amplifier is adjusted based on power change information of the input signal light, the input signal light is amplified by using the pump light with the adjusted power, and the input signal light is gain compensated. In this way, the input signal light can be gain compensated only by detecting the power change information of the input signal light, the optical amplifier does not need to be in a full wave state for a long time, and therefore, the failure rate of the optical amplifier can be reduced.

The application discloses a network-constructing converter control method, system, device and medium, and belongs to the technical field of converter control. The method is as follows: determining a reference current according to real-time inductance current and real-time capacitance voltage of a linear virtual oscillator, and active power reference value and reactive power reference value of a target converter; obtaining real-time alternating current of the target converter to determine a given current; obtaining instantaneous inductance current and instantaneous capacitance voltage of the linear virtual oscillator according to the given current to determine a frequency locking direction; obtaining a target capacitance value according to the frequency locking direction and total current of the linear virtual oscillator to obtain adjusted inductance current and adjusted capacitance voltage of the linear virtual oscillator; and obtaining a voltage modulation reference value of the target converter to control the target converter. Therefore, the application can solve the technical problems of complex and unstable network-constructing converter control in the prior art, and realizes efficient control of the converter.