Uninterruptible power system
By introducing a bidirectional AC-DC converter, a resonant converter, and a high-frequency automatic voltage regulation circuit into the uninterruptible power supply system, the high cost and low efficiency problems caused by the low-frequency automatic voltage regulation circuit are solved, and the number and size of components are reduced while the efficiency is improved.
CN121663772APending Publication Date: 2026-03-13DELTA ELECTRONICS INC(CN)
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2026-03-13
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Figure CN121663772A_ABST
Abstract
An uninterruptible power system comprises a bidirectional AC-DC converter, a resonant converter, an automatic voltage regulation circuit and a control unit. When the AC input voltage exceeds a predetermined voltage range and is within a voltage regulation range, the automatic voltage regulation circuit, the resonant converter and the bidirectional AC-DC converter generate an AC supplementary voltage at the power output end according to the AC input voltage, and generate an AC output voltage according to the AC input voltage and the AC supplementary voltage. Therefore, the AC output voltage is in a preset voltage range. When the AC input voltage exceeds the voltage regulation range, the resonant converter and the bidirectional AC-DC converter generate an AC output voltage at the power output end according to the discharge voltage of the battery, and the AC output voltage is within a predetermined voltage range.
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