一种单相高频AC-AC变换器

By utilizing an input resonant network and a load impedance matching network, a single-phase high-frequency AC-AC converter is used to achieve zero-voltage switching, solving the problems of high switching losses and complex control in existing technologies. This enables efficient conversion of low-frequency electricity to high-frequency electricity and high-efficiency power supply.

CN117040291BActive Publication Date: 2026-07-17ZHEJIANG UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Filing Date
2023-08-18
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing AC-AC converters suffer from high switching losses, low efficiency, and complex control during the high-frequency conversion process. In particular, single-stage converters are more complex to control, and existing technologies struggle to achieve simple and efficient conversion from low-frequency to high-frequency electricity.

Method used

A single-phase high-frequency AC-AC converter is adopted, which utilizes the input resonant network and the load impedance matching network to achieve zero-voltage switching through a bidirectional power switch S, reducing the DC link and the number of switches. The structure is simple and the control is relatively simplified.

Benefits of technology

It achieves the conversion from low-frequency electricity to high-frequency electricity, reduces switching losses, improves system efficiency, and simplifies the control process.

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Abstract

本发明公开了一种单相高频AC‑AC变换器,包括交流电压源vin、双向功率开关S、输入谐振网络和负载阻抗匹配网络;所述交流电压源vin的正负端与输入谐振网络连接;所述双向功率开关S的一端与输入谐振网络连接,另一端与交流电压源vin连接;所述负载阻抗匹配网络为串联RLC阻抗网络,连接在输入谐振网络与交流电压源vin之间。本发明可以实现低频电向高频电的转换,变换器结构和控制简单。此外,本发明的功率开关可以实现零电压开关,降低了开关损耗,提高系统效率。
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