| 周持衡,张长征,张维尧.基于级联9电平技术的大功率超声波电源*[J].,2021,40(3):376-382 |
| 基于级联9电平技术的大功率超声波电源* |
| High power ultrasonic power supply based on cascaded 9 level technology |
| 投稿时间：2020-07-14 修订日期：2021-05-01 |
| 中文摘要: |
| 针对超声波电源输出功率小,功率密度低等问题,提出了一种基于级联9电平技术的大功率超声波电源。接入光伏电源减少电网功率消耗,又可实现光伏发电。电源逆变部分由两个H桥单元级联组成,经过一定的控制策略实现输出为9电平波形,可以显著提高超声波电源的输出功率,减少匹配网络的电感量,提高超声波电源的功率密度。针对传统锁相环跟踪频率稳定性差,易造成严重的频率失调等问题,提出一种电压差法对谐振频率自动跟踪,原理简单,可行性高。通过分析该超声波电源的系统结构、工作原理及控制策略,在Matlab/Simulink上进行了建模仿真,验证了该方案的可行性和有效性。 |
| 英文摘要: |
| In consideration of the problems of low output power and low power density of ultrasonic power supply, a high-power ultrasonic power supply based on cascaded 9 level technology is proposed in this paper. Connected to the photovoltaic power supply reduces the power consumption of the grid, and can also achieve photovoltaic power generation. The inverter circuit is composed of two H-bridge units cascaded. After a certain control strategy, the output is a 9-level waveform, which can significantly increase the output power of the ultrasonic power supply, reduce the inductance of the matching network, and improve the ultrasonic power density. In view of the poor stability of the tracking frequency of the traditional phase-locked loop, which is easy to cause serious frequency offset and other problems, a voltage difference method is proposed to automatically track the resonance frequency. The principle is simple and the feasibility is high. By analyzing the system structure, working principle and control strategy of the ultrasonic power supply, the modeling and simulation are implemented in Matlab/Simulink to verify the feasibility and effectiveness of the scheme. |
| DOI：10.11684/j.issn.1000-310X.2021.03.008 |
| 中文关键词: 超声波电源 频率自动跟踪 电压差法 9电平 |
| 英文关键词: ultrasonic power supply automatic frequency tracking voltage difference method 9 level |
| 基金项目:湖北省技术创新专项重大项目资助 |
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