5results about How to "Reduce capacity requirements" patented technology

This disclosure provides an X-ray imaging device and its power distribution unit and wireless power transmission device. The power distribution unit includes: a first rectifier circuit, a charging circuit, an energy storage module, and a first inverter circuit; the input terminals of both the first rectifier circuit and the charging circuit are connected to the external power grid; the output terminal of the first rectifier circuit is connected to the input terminal of the first inverter circuit, and the output terminal of the first inverter circuit is connected to the wireless power transmission device of the X-ray imaging device; the output terminal of the charging circuit is connected to one end of the energy storage module, and the other end of the energy storage module is connected to the input terminal of the first inverter circuit. In this disclosure, the power supply from the power grid and the power supply from the energy storage module are in parallel, which can reduce the imaging device's demand on the power grid capacity. Since the charging circuit only participates in the charging process of the energy storage module and does not participate in the discharging process of the energy storage module, it can realize simultaneous charging and discharging of the energy storage module, and there are no excessive requirements on the power level of the charging circuit, which can reduce the cost of the charging circuit.

A data quantization method and device, a computer readable storage medium and a chip, the data quantization method comprising: obtaining a data block to be quantized, dividing the data block to be quantized into one or more data groups to be quantized according to a preset grouping method; performing quantization calculation on each data group to be quantized according to a target quantization format, to obtain quantization data corresponding to data in each data group to be quantized and quantization metadata corresponding to each data group to be quantized, wherein the quantization metadata is used for dequantization of the quantization data; and storing the quantization metadata corresponding to the data block to be quantized and the quantization data as a continuous data structure.

This invention provides a hybrid solid-state transformer and its power distribution method for normal power optimization, belonging to the field of power electronic transformer technology. It includes a power frequency transformer, a three-stage dual-parallel converter, a power sampling circuit, a hysteresis comparator circuit, and a combined controller. One end of the power frequency transformer is connected to the high-voltage grid, and the other end is connected to the AC load. The three-stage dual-parallel converter is connected in parallel with the power frequency transformer. The power sampling circuit acquires the voltage and current of the AC load and outputs an analog voltage signal. The hysteresis comparator circuit evaluates the operating conditions of the analog voltage signal and outputs a binary status signal. The combined controller acquires the binary status signal and the fault signal of the three-stage dual-parallel converter, and controls the operating state of the power frequency transformer and the three-stage dual-parallel converter. This invention solves the problems of low operating efficiency and uneven power distribution of existing transformers under light load, heavy load, and fault conditions.

This invention relates to the field of power distribution, and in particular to a magnetically controlled transformer device for flexible interconnected power distribution networks. The device includes a first transformer, a second transformer, a magnetically controlled circuit, and a start-stop circuit. By connecting the secondary windings of the first and second transformers in series, and connecting the input of the magnetically controlled circuit to the secondary winding of the first transformer and the output to the primary winding of the second transformer, the magnetically controlled circuit only needs to provide a small adjustment voltage to regulate the amplitude and phase of the entire device's output voltage through the transformer coupling effect. This achieves bidirectional flexible scheduling of active and reactive power. Furthermore, since the main power path is primarily carried by the transformer windings, the magnetically controlled circuit only handles power regulation, significantly reducing the capacity requirements of full-power power electronic devices, thus reducing cost and size. Simultaneously, the magnetically controlled circuit is constructed using multiple sub-modules connected in parallel, each of which can be independently sampled, supporting online disconnection of faulty sub-modules, thereby improving system reliability and maintainability.

This invention discloses a distributed series reactor device and control method for power lines, belonging to the field of power systems. The distributed series reactor device includes: introducing distributed adjustable series reactors into the power line between the starting bus and the ending transformer; a distributed series reactor control module acquiring the three-phase current signal of the power line, the three-phase voltage signal of the distributed fine-tuning series reactor, and the DC bus voltage signal of the distributed fine-tuning series reactor, generating fine-tuning control signals and coarse-tuning control signals; controlling the number of distributed coarse-tuning series reactors connected through the coarse-tuning control signal, and then connecting them to a preset reactance value through the fine-tuning control signal; continuously adjusting the reactance parameters of the power line between the starting bus and the ending transformer. This invention continuously changes the equivalent reactance of the power line through distributed adjustable series reactors, achieving three-phase imbalance management and power flow distribution adjustment, reducing system costs and losses, and improving operational reliability.