4 results about "Voltage fluctuation" patented technology

The invention relates to a rapid reactive compensation method for a low-voltage distribution system. The rapid reactive compensation method for the low-voltage distribution system is applicable to reactive compensation for a low-voltage alternate current (AC) network and comprises that first, a current acquisition module acquires voltage and current signals in the electric network and a reactive compensation current output to the electric network by an inverter module and the voltage and current signals and the reactive compensation current are transmitted into a control module, second, the control module executes calculation with a real domain digital phase shifting method and extracts a reactive power part of the voltage and current and signals and the reactive compensation current, third, comparison between the extracted reactive power part and a reactive compensation signal output to the electric network is carried out to obtain the difference, and fourth, the control module works according to the difference, the difference is transmitted to the inverter module after processed by a hysteresis comparator, and the reactive compensation for the network is achieved through a hysteresis tracking compensation var generator. Compared with the prior art, the rapid reactive compensation method for the low-voltage distribution system can automatically compensate the reactive current of the low-voltage AC network, restrain voltage fluctuation and flickering and thus promote the operating efficiency of the electric network.

The invention discloses a signal output and detection precision optimization system. The system comprises a power supply management chip, a hardware low-pass filter, a DMA list module, a software filter, a voltage control module and an acquisition module, wherein the hardware low-pass filter is used for filtering out specific switching frequency and clutters so as to reduce voltage fluctuation reaching an acquisition port; the DMA list module is used for executing DMA data sampling and storing real-time acquired data; the software filter is used for carrying out peak value plus mean value filtering processing on data stored in the DMA list module; the voltage control module is used for carrying out power supply regulation and control on the power supply management chip according to a processing result of the software filter, and the acquisition module is used for processing the processing result of the software filter as data to be uploaded. According to the invention, required outputvoltage, high-precision voltage output and high-precision current acquisition can be rapidly adjusted.

The invention relates to the field of medical and health care equipment, in particular to an in-body power supply module of a medical chip and a chip system. The invention provides an internal power supply module of a medical chip. The internal power supply module includes a rectification module and a voltage stabilization module. The invention also provides a chip system of the medical chip. The power module in the medical chip body provided by the present invention effectively solves the problems of large volume and weight, low precision and poor stability of the power module in the medical chip body in the prior art, improves the performance of suppressing voltage fluctuations, and has higher precision and stability.