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公开(公告)号：US20250015730A1
公开(公告)日：2025-01-09
申请号：US18763267
申请日：2024-07-03
Applicant: Huawei Digital Power Technologies Co., Ltd.
IPC: H02M7/5387 , H02M1/08 , H02M1/36
Abstract: A converter and a control method of sending a pulse width modulation (PWM) driver gating signal thereof. When an alternating current voltage output by the converter is in an O area, the converter may be controlled to switch between an upper half-bridge arm straight-through mode and a lower half-bridge arm straight-through mode. In this way, it can be ensured that there is a freewheeling path for a current in an inductive component, and a problem that a switching transistor of a secondary-side circuit is in a straight-through state is avoided.
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2.发明公开公开(公告)号：US20240333026A1
公开(公告)日：2024-10-03
申请号：US18621415
申请日：2024-03-29
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Jun ZHAO , Chengliang ZHANG , Zhu MAO , Yaowei HU , Zhixiang HU
CPC classification number: H02J9/062 , H02J3/32 , H02J3/38 , H02M1/0067 , H02J2300/26
Abstract: A micro inverter and a control method therefor, an uninterruptible power supply, and a power supply system. The micro inverter includes a primary-side winding, a first secondary-side winding, a second secondary-side winding, a first power conversion, a second power conversion circuit and an energy storage buffer circuit. When the micro inverter generates double frequency ripple power, a controller controls the energy storage buffer circuit to perform charging in a first time period, so that energy from the first power conversion circuit is absorbed by using the transformer to perform energy buffering, and controls the energy storage buffer circuit to perform discharging in a second time period, so that energy is transferred to the second power conversion circuit by using the transformer. According to the embodiments, a volume of the micro inverter can be reduced, costs are reduced, and reliability of a power converter is improved.
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