家电科技Issue(z1)：8-11,4.DOI:10.19784/j.cnki.issn1672-0172.2023.99.002
基于压电负载的动态无级调压控制电路实现
Implementation of dynamic stepless voltage regulating control device based on piezoelectric load
王慧锋 1李玉 1周宏明 1余珍珍1
作者信息
- 1. 广东美的制冷设备有限公司 广东佛山 528000
- 折叠
摘要
Abstract
Piezoelectric ceramic loads work through the principle of inverse piezoelectric effect,and the driving voltage of the load often adopts AC output.By changing the voltage amplitude of the AC output,the swing amplitude control of a cantilever beam based on piezoelectric ceramics can be achieved,often used in engineering fields such as turbulence and active heat dissipation.If analog gear control is used for amplitude modulation control,there will be high switching current stress,limited optional swing,and high cost.Proposes a virtual isolation digital controlled PWM duty cycle regulation method,which achieves stepless regulation of output voltage by controlling the current size of the bus voltage feedback loop,and also solves the problem of high current stress during switching.This scheme realizes that the peak to peak value of AC output voltage can be dynamically adjustable between 12 V and 430 V at 12 V input,with low cost,and also analyzes the overall conversion efficiency.关键词
压电陶瓷负载/虚拟隔离/动态无级调压Key words
Piezoelectric ceramic/Virtual isolation/Dynamic stepless voltage regulation引用本文复制引用
王慧锋,李玉,周宏明,余珍珍..基于压电负载的动态无级调压控制电路实现[J].家电科技,2023,(z1):8-11,4.
