基于小信号模型的级联式单相VIENNA开关变换器的控制与仿真设计 |
| |
作者姓名: | 王聪 胡昊雨 程红 |
| |
作者单位: | 中国矿业大学(北京) 机电与信息工程学院,北京100083 |
| |
基金项目: | 中央高校基本科研业务费专项;国家自然科学基金 |
| |
摘 要: | 针对传统矿用高压变频器整流级前端需要接入昂贵而笨重的工频变压器的问题,同时考 虑矿用主通风机并不需要反馈电能,提出一种由3 个级联式单相VIENNA开关变换器星接组成 的三相整流电路作为矿用高压变频器的整流级。 这种级联式开关变换器具有能量单向流动、开 关器件少的特点,可有效降低开关管及二极管的耐压,适合于高压大功率场合,取消了工频变压 器,降低了变频器的成本。 小信号建模对于研究电路的动态过程具有重要的意义,本文依据这种 级联式开关变换器的工作状态建立小信号模型,按照参数要求设计补偿网络的传递函数,通过伯 德图和仿真证明该小信号模型的正确性。
|
关 键 词: | 矿用变频器 整流级 联式单相VIENNA开关变换器 小信号模型 闭环控制 |
Control and simulation design of a cascaded single-phase VIENNA switching converter based on small signal modeling |
| |
Affiliation: | SchoolofMechanicalElectronic&InformationEngineering,ChinaUniversityofMining&Technology-Beijing,Beijing100083,China |
| |
Abstract: | Inordertoavoidusingtheheavyandexpensivelinefrequencytransformerinthetraditional high-voltageminingACdriver,andconsideringthattheminingfandoesnotneedenergyfeedback,a three-phaserectifierconsistingofthreestarconnectedcascadedsingle-phaseVIENNAswitchingconverter(CSVSC)isproposed,whichcanbeusedasrectifierstageoftheACdriver.TheCSVSChasthe characteristicsofone-wayflowofenergyandfewerswitchingdevices,whichcaneffectivelyreducethe withstandvoltage of the switching device and diode.Therefore,the CSVSC can be applied to highvoltageandhigh-powerapplications,eliminatingthelinefrequencytransformerandreducingthecostof theACdriver.Small-signalmodelingisofgreatsignificanceforstudyingthedynamicprocessofcircuits.Inthispaper,the small-signal model is established by analyzing the working state of the CSVSC.Thetransfer function of the compensation network is designed according to the given parameters.Thecorrectnessoftheproposedsmall-signalmodelisprovedbyBodediagramandsimulation. Key words:miningACdriver;rectifierstage;cascadedsingle-phaseVIENNAswitchingconverter(CSVSC);smallsignalmodeling;closed-loopcontrol |
| |
Keywords: | |
本文献已被 CNKI 万方数据 等数据库收录! |
| 点击此处可从《》浏览原始摘要信息 |
|
点击此处可从《》下载全文 |
|