【摘要】：利用電容電流進(jìn)行有源阻尼時(shí)需要增加電流傳感器,不但增加系統(tǒng)的硬件成本,也增加了系統(tǒng)的復(fù)雜性和故障率。文中提出利用電網(wǎng)電壓和入網(wǎng)電流估算出電容電流,再利用估算電流進(jìn)行有源阻尼。由于數(shù)字控制器估算出電容電流和原來(lái)連續(xù)系統(tǒng)的電容電流存在延遲,若直接用估算電流進(jìn)行阻尼策略,不但影響控制器的阻尼效果還會(huì)影響系統(tǒng)穩(wěn)定性。為了獲得滿意的阻尼效果,在估算的電流基礎(chǔ)上進(jìn)行分?jǐn)?shù)插值相位補(bǔ)償。通過(guò)仿真和實(shí)驗(yàn)對(duì)該方法進(jìn)行驗(yàn)證,結(jié)果表明用補(bǔ)償后的估算電流進(jìn)行阻尼可以實(shí)現(xiàn)良好的阻尼效果。
[Abstract]:It is necessary to increase the current sensor when using capacitive current for active damping. It not only increases the hardware cost of the system, but also increases the complexity and failure rate of the system. In this paper, the capacitor current is estimated by the use of the grid voltage and the net current, and the active impedance is used to estimate the current. The digital controller estimates the capacitance current and the original. The capacitance current of the continuous system has a delay. If the damping strategy is used directly with the estimated current, the damping effect of the controller will not only affect the stability of the system. In order to obtain the satisfactory damping effect, the fractional interpolation phase compensation is carried out on the basis of the estimated current. The result table is verified by simulation and experiment. The damped effect can be achieved by damping the estimated current after compensation.
【作者單位】： 南京航空航天大學(xué)自動(dòng)化學(xué)院;南京工程學(xué)院工業(yè)中心;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(61473145) 中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金 江蘇省普通高校研究生科研創(chuàng)新計(jì)劃資助項(xiàng)目(KYLX15_0274) 江蘇省“青藍(lán)工程” 江蘇省“六大人才高峰”高層次人才項(xiàng)目(XNY-030)~~
【分類號(hào)】：TM464

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