Subjects: Nuclear Science and Technology >> Engineering Technology of Nuclear Fusion submitted time 2024-05-12
Abstract： Background The high voltage power supply is an important part of the neutral beam injection heating system, which determines the beam energy and the quality of the extraction beam current. With the gradual increase of voltage level, the PSM high voltage power supply cannot meet the experimental requirements. Purpose In order to realize the fast switching of injected power for neutral beam modulation, an inverter high voltage power supply based on super capacitor energy storage is proposed. Methods Super capacitor energy storage is adopted to reduce the required grid capacity and minimize the impact on the grid. The DC-DC resonant converter structure with soft-switching technology is used to improve the response speed of the power supply and reduce the switching loss of the switching devices. Design power module circuit topology, build system model and calculate relevant parameters based on power supply performance specifications. The charging circuit and main loop PSIM simulation model are established, and the power supply performance indexes are simulated and verified. Build the test prototype of inverter power supply module and complete the test of relevant performance indexes. Results and Conclusions After simulation and experimental verification, the power module is able to achieve a stable output of 1600V/50A, which meets the design requirements of 6MW/120kV.
Peer Review Status:
Awaiting Review
Subjects: Medicine, Pharmacy >> Clinical Medicine submitted time 2022-12-20 Cooperative journals: 《中国全科医学》
Abstract：
With the increasing aging population in China, older adults’ falls and fall-related injuries have gained increased attention, and preventive guidelines have also been developed and regularly updated. In 2022, The World Falls Guidelines Task Force assembled 96 experts from 39 countries issued the World Guidelines for Falls Prevention and Management for Older Adults. The guideline uses a person-centered approach by taking full account of the needs of older adults on the management of falls and the perceptions and experiences of caregivers and other stakeholders on preventing falls of older adults, as well as the utility of the guideline in various care settings and locations with limited resources. The guideline also incorporates the latest evidence on the use of e-health for fall prevention to provide new clinical recommendations on the screening, assessment, and management of risk for falls among community-dwelling older adults. It also promotes physical activity and falls prevention for all older adults. The current work offers an in-depth interpretation of guidelines and provides practical guidance to Chinese clinicians and community workers for prevention and management of falls in older adults.
Subjects: Statistics >> Biomedical Statistics submitted time 2022-05-02
Abstract：
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Peer Review Status:Awaiting Review
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