Abstract: According to one embodiment, a control device for an electric power system capable of supplying power to load devices in a plurality of demand areas based on first to N-th power devices in first to N-th placement areas and configured to be able to perform at least one of discharge or charge of power, comprising: a controller configured to detect, based on information of power consumption in each of the demand areas, a demand area in which the power consumption fluctuates more significantly than usual, and determine, according to distances between a detected demand area and the first to N-th placement areas, a control parameter related to input and output of power in the first to N-th power devices.

Abstract: A device and method for high-speed tuning soliton microcomb comprising an on-chip high-Q lithium niobate (LN) microresonator as a comb resonator whose dispersion is engineered for soliton comb generation where a strong electro-optic Pockels effect is used to dynamically tune the soliton repetition rate, with integrating electrooptic tuning and modulation elements directly integrated into the comb resonator.

Abstract: Methods and systems are described for conversion of an optical signal. The device may comprise a conversion layer comprising a nonlinear optical material with a surface structure disposed to receive a pump signal and cause a bound states in the continuum (BIC) optical mode. The conversion layer may be configured to convert, based on nonlinear interaction with the BIC optical mode, an incoming signal incident on the conversion layer from an incoming wavelength to a target wavelength.

Abstract: A method for measuring the diameter of filament diffraction fringes by frequency domain calculation comprising: building a set of diffraction optical path measurement system and capturing diffraction fringe images; determining the starting point of the imaging range; Simulating the electromagnetic field propagation process in Fraunhofer diffraction, and determining the optimal fringe range considering the noise caused by the difference in CCD sensitivity; Finally calculating the filament diameter by Fourier transform for different lengths of fringe. The final value of the calculated filament diameter is obtained by fitting an envelope to the variation of the diameter. The invention is simple in calculation and has little dependence on the experimental device, which means the superiority of using the frequency domain for parameter measurement, and the measurement accuracy is in the sub-nanometer level.

Abstract: According to one embodiment, a power supply device connected to a power grid is provided. The power supply device includes an inverter, a control unit configured to control operation of the inverter using a first parameter value so as to simulate characteristics of a synchronous generator, and an acquisition unit configured to obtain a second parameter value different from the first parameter value. The control unit is configured to control the operation of the inverter by changing the first parameter value to the acquired second parameter value.

Abstract: The present disclosure provides a quick-release assembly, a connection structure, a photography accessory, and a quick-release kit. The quick-release assembly includes: a mounting base, a top end thereof being defined with a fixing slot, a bottom end thereof being defined with an accommodation slot, a limiting groove being defined in a bottom wall, an opening at one end of the limiting groove being communicated with the accommodation slot, and an opening at the other end of the limiting groove being communicated with the fixing slot; a sliding member slidably accommodated in the accommodation slot; and a resisting member received in the limiting groove. After assembly, one end of the resisting member abuts against the sliding member, and the other end of the resisting member extends out of a bottom wall surface of the fixing slot.

Abstract: A quick release and assembly connecting member and a shooting device are provided. The quick release and assembly connecting member includes a connecting cover, a mounting seat, and a fixing mechanism. The connecting cover includes an inserting portion. The mounting seat includes a mounting and locking mechanism. The fixing mechanism is arranged on the connecting cover and/or the mounting seat, and configured for mounting and fixing the quick release and assembly connecting member with a device. The mounting and locking mechanism includes a clamping and locking sleeve and a locking member. The clamping and locking sleeve is configured to enclose a mounting space for mounting the inserting portion, and the locking member is capable of switching between a first position and a second position, so that when the inserting portion is mounted in the mounting space, the locking member is capable of locking or unlocking the inserting portion.

Abstract: A power conditioning system includes a control circuit. The control circuit is configured to switch a output control mode to any one of a first mode in which an operation not based on inertia is executed and a second mode in which an operation based on inertia is executed, performs output control according to a first rating in the first mode, and performs output control according to a second rating different from the first rating in the second mode.

Abstract: The present invention provides an electric tool comprising a body, an operating component, an output shaft, and a stop mechanism. An arresting disc is disposed on the output shaft, and a groove is formed on the arresting disc; the stop mechanism comprises a protrusion, for example, a pin, which is operable so that the protrusion extends to insert into the groove to lock the output shaft. A stop mechanism of the present invention is easy to operate, delivers good safety performance, and has a relatively simple structure, which allows convenient production and subsequent maintenance. Further, a stop mechanism of the present invention automatically springs back to a non-stop position at which it detaches from the output shaft or the transmission gear of the transmission mechanism when the external force is lost, which prevents possible damage to the output shaft or transmission mechanism when a user starts the electric tool before releasing the stop mechanism.

Abstract: A bypass circuit of an embodiment includes a switch that shorts-circuit between a first power conversion apparatus and a power storage apparatus. The switch is connected in parallel to a second power conversion apparatus. The first power conversion apparatus converts power generated from natural energy and outputs the converted power to a power distribution grid. The second power conversion apparatus converts surplus power that has not been converted by the first power conversion apparatus and charges the power storage apparatus with the converted power; or converts power discharged from the power storage apparatus and supplies the converted power to the first power conversion apparatus.

Abstract: A modular air outlet assembly comprises at least two air outlet sub-modules and a housing connecting member, wherein each of the air outlet sub-modules have different functions and are matchingly engaged in a sealed manner, and the air outlet sub-modules comprise a front sub-module and a rear sub-module; the front sub-module comprises a front housing and a front functional component, and the front housing has a standard air inlet joint; the rear sub-module comprises a rear housing and a rear functional component, and the rear housing has a standard air outlet joint and a standard air duct opening joint. A modular approach is used to design the air outlet assembly, and the relative angle between the air outlet sub-modules can be adjusted by means of different housing connecting members to avoid installation limitations in vehicles, and the mold development cost and related costs are reduced.

Abstract: According to one embodiment, a power supply device connected to a power grid is provided. The power supply device includes an inverter, a control unit configured to control operation of the inverter using a first parameter value so as to simulate characteristics of a synchronous generator, and an acquisition unit configured to obtain a second parameter value different from the first parameter value. The control unit is configured to control the operation of the inverter by changing the first parameter value to the acquired second parameter value.

Abstract: A control apparatus controlling a power output apparatus that generates, based on input power from one of an electrical grid and a power storage, output power to another of the electrical grid and the power storage is provided. The control apparatus includes: a communicator to receive a grid frequency of the electrical grid and a state of charge of the power storage, or information allowing the grid frequency and the state of charge to be calculated; and a processor to determine an output destination and an output rate of the output power, based on a function of calculating the output destination and the output rate according to the grid frequency. The output destination and the output rate are adjusted according to the state of charge, by the processor changing, according to the state of charge, the function used to determine the output destination and the output rate.

Abstract: A method for measuring the diameter of filament diffraction fringes by frequency domain calculation comprising: building a set of diffraction optical path measurement system and capturing diffraction fringe images; determining the starting point of the imaging range; Simulating the electromagnetic field propagation process in Fraunhofer diffraction, and determining the optimal fringe range considering the noise caused by the difference in CCD sensitivity; Finally calculating the filament diameter by Fourier transform for different lengths of fringe. The final value of the calculated filament diameter is obtained by fitting an envelope to the variation of the diameter. The invention is simple in calculation and has little dependence on the experimental device, which means the superiority of using the frequency domain for parameter measurement, and the measurement accuracy is in the sub-nanometer level.

Abstract: According to one embodiment, a charging system charges a secondary battery provided in a mobile body. The charging system includes a controller which selects one of a first charge mode which charges the secondary battery by simulating a synchronous generator and a second charge mode which charges the secondary battery without simulating the synchronous generator, and a charger which charges the secondary battery by an operation corresponding to the first charge mode or the second charge mode selected by the controller.

Abstract: A power conditioning system includes a control circuit. The control circuit is configured to switch a output control mode to any one of a first mode in which an operation not based on inertia is executed and a second mode in which an operation based on inertia is executed, performs output control according to a first rating in the first mode, and performs output control according to a second rating different from the first rating in the second mode.

Abstract: A bypass circuit of an embodiment includes a switch that shorts-circuit between a first power conversion apparatus and a power storage apparatus. The switch is connected in parallel to a second power conversion apparatus. The first power conversion apparatus converts power generated from natural energy and outputs the converted power to a power distribution grid. The second power conversion apparatus converts surplus power that has not been converted by the first power conversion apparatus and charges the power storage apparatus with the converted power; or converts power discharged from the power storage apparatus and supplies the converted power to the first power conversion apparatus.

Abstract: A multi-task deep learning-based real-time matting method for non-green-screen portraits is provided. The method includes: performing binary classification adjustment on an original dataset, inputting an image or video containing portrait information, and performing preprocessing; constructing a deep learning network for person detection, extracting image features by using a deep residual neural network, and obtaining a region of interest (ROI) of portrait foreground and a portrait trimap in the ROI through logistic regression; and constructing a portrait alpha mask matting deep learning network. An encoder sharing mechanism effectively accelerates a computing process of the network. An alpha mask prediction result of the portrait foreground is output in an end-to-end manner to implement portrait matting. In this method, green screens are not required during portrait matting.