中文摘要：

超声清洗技术已经在国内有了一定程度的应用，但是超声清洗电源的负载压电换能器在实际环境中易受到外界干扰，使得其阻抗特性变化不定，最终导致电源的工作效率不高，甚至严重失谐损坏电源。鉴于以上问题，基于负载压电换能器静态模型和动态特性，提出一种在较大功率场合应用的高效超声清洗电源的设计方案。该方案在不控整流单元之后加入Boost斩波电路，使得在直流侧实现调功和有源功率因数校正（APFC），减少电源对于电网的污染，其中，APFC控制采用电压电流双闭环控制。为了提高功率输出，逆变电路采用全桥电路，输出频率跟踪利用Fuzzy—PID多模态控制，以提高控制的速度和动态性能。通过Matlab／Simpower仿真实验证明了设计方案的可行性和高效性，为超声清洗电源实际应用提供参考。

英文摘要：

Ultrasonic cleaning technology has a certain degree of application in domestic. Uncertainty of the impedance characteristics of the piezoelectric transducer in practical environment makes the power efficiency low. Based on the static model and dynamic characteristics of piezoelectric transducer, this paper proposes a more efficient design of ultrasonic cleaning power applied in high-power. The scheme adds a Boost chopper circuit after the uncontrolled rectifier to realize power adjusting and active power factor correction （APFC） with voltage and current double closed-loop control. The inverter adopts the full bridge circuit in order to improve the output power. The output frequency tracking method uses the fuzzy-PID multimodal control to improve the control speed and dynamic performance. Through the MATLAB/Simpower simulation software, the feasibility and efficiency of the design is verified.