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公开(公告)号：WO2022251731A1
公开(公告)日：2022-12-01
申请号：PCT/US2022/031584
申请日：2022-05-31
申请人： VERTIV CORPORATION
发明人： GAMBILL, Matthew , CHEN, Xian
摘要： A power control system may Include an uninterruptible power supply (UPS), a display-device, load measurement circuitry to determine a load percentage of the UPS, and a controller. The controller may receive the load percentage of the UPS from the load measurement circuitry; monitor the load percentage of the UPS to determine whether the UPS is operating in a nominal load state or an overload state; generate an input overload countdown timer when the UPS is operating in the overload state, where the input overload countdown timer provides an estimated time remaining in the overload state; generate an output overload countdown timer by applying a minimum envelope filter to the input overload countdown timer; and direct the display device to display the output overload countdown timer. Additionally, the minimum envelope filter may be operated in an open-loop or a closed-loop configuration.
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公开(公告)号：WO2022241204A1
公开(公告)日：2022-11-17
申请号：PCT/US2022/029167
申请日：2022-05-13
申请人： VERTIV CORPORATION
发明人： ELSWICK, Matthew , CHEN, Xian , WANG, Kaiyu
IPC分类号： H02M7/155 , H02M1/15 , H02M1/00 , H02P7/29 , H02P7/292 , H02M1/0003 , H02M1/08 , H02M1/12 , H02M7/217 , H02M7/219
摘要： A device may include an rectifier with one or more transistors that accepts a three phase AC input and generates a DC bus output, a low-pass filter to provide a filtered DC bus voltage, a driver to drive the transistors based on a modulation index, and a controller to generate the modulation index. The controller may generate a nominal modulation index, generate an adjusted modulation index based on the nominal modulation index modified by a ratio of the filtered and measured DC bus voltages, and provide the modulation index to the PWM driver, where the modulation index is the nominal modulation index when a difference voltage associated with a difference between the filtered and measured DC bus voltages is below a voltage threshold, and where the modulation index is the adjusted modulation index when the difference voltage is above the voltage threshold.
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公开(公告)号：WO2023023235A1
公开(公告)日：2023-02-23
申请号：PCT/US2022/040731
申请日：2022-08-18
申请人： VERTIV CORPORATION
发明人： RATCLIFF, Gregory Wade , CHEN, Xian
摘要： In some embodiments, apparatuses and methods are provided herein useful to operating uninterruptible power supplies (UPS). The embodiments may include a plurality of capacitor banks, a UPS control circuit, and a central control circuit. The UPS control circuit is configured to cause an output of a clean electrical power, sample the clean electrical power, calculate control algorithm outputs based on the sampled clean electrical power, and output control algorithm results to the central control circuit. The central control circuit configured to detect a degradation of the plurality of capacitor banks, and transmit a service alert in response to the detection of the degradation of the plurality of capacitor banks.
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