發(fā)布時(shí)間：2018-03-18 17:36

  本文選題：模型預(yù)測(cè)　切入點(diǎn)：跟蹤誤差　出處：《電機(jī)與控制應(yīng)用》2016年11期 　論文類(lèi)型：期刊論文

【摘要】：從能量流動(dòng)角度分析雙PWM結(jié)構(gòu),在前端整流側(cè)采用模型預(yù)測(cè)算法實(shí)現(xiàn)對(duì)整流器輸出的有功功率與無(wú)功功率最小跟蹤誤差的基礎(chǔ)上,采用動(dòng)態(tài)與靜態(tài)相結(jié)合的功率補(bǔ)償方法實(shí)現(xiàn)對(duì)系統(tǒng)能量控制,從而代替前端整流側(cè)電壓外環(huán)PI控制,用以達(dá)到在負(fù)載功率突變時(shí)抑制直流母線(xiàn)電壓波動(dòng),減少直流側(cè)電容容量,控制網(wǎng)側(cè)諧波的目的。后端采用轉(zhuǎn)子磁鏈定向控制方法實(shí)現(xiàn)對(duì)三相異步電動(dòng)機(jī)的控制,最終實(shí)現(xiàn)雙PWM前端整流側(cè)與后端逆變側(cè)的協(xié)調(diào)控制。仿真結(jié)果表明,系統(tǒng)在電動(dòng)機(jī)功率突變時(shí),能夠?qū)崿F(xiàn)功率最小誤差跟蹤控制,并且能夠抑制直流母線(xiàn)電壓波動(dòng),網(wǎng)側(cè)電流波形良好。
[Abstract]:The dual PWM structure is analyzed from the point of view of energy flow. The model prediction algorithm is used to realize the minimum tracking error of active and reactive power output from the front end rectifier. The dynamic and static power compensation method is used to realize the system energy control instead of the front-end rectifier voltage outer loop Pi control so as to suppress the DC bus voltage fluctuation and reduce the DC side capacitance capacity when the load power changes. The purpose of controlling the harmonics on the network side. The rotor flux oriented control method is used to control the three-phase asynchronous motor at the back end, and the coordination control between the rectifier side of the double PWM front end and the back end inverter side is finally realized. The simulation results show that, When the motor power changes, the system can realize the power minimum error tracking control, and can restrain the DC bus voltage fluctuation, and the grid side current waveform is good.
【作者單位】： 河南科技大學(xué)信息工程學(xué)院;中信重工機(jī)械股份有限公司;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(U1404512)
【分類(lèi)號(hào)】：TM46
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本文編號(hào)：1630613