關(guān)冠暉 傅偉豪
摘 要 一種逆變電路采用IGBT橋,逆變方式為SPWM,兩個(gè)逆變電源并聯(lián)運(yùn)行。該電源采用LC濾波器,主要濾除高次諧波。逆變電源采用壓瞬時(shí)值反饋單環(huán)PID控制,改善輸出波形質(zhì)量。該并聯(lián)逆變電源在Matlab的Simulink組件中模擬,分別測試分析了帶動線性負(fù)載動態(tài)均流效果和非線性負(fù)載靜態(tài)均流效果。
關(guān)鍵詞 逆變電源 SPWM 并聯(lián)運(yùn)行 PID控制
中圖分類號:TM743 文獻(xiàn)標(biāo)識碼:A DOI:10.16400/j.cnki.kjdks.2016.12.027
Abstract An inverter circuit uses IGBT bridge, the inverter mode is SPWM, and the two inverters are connected in parallel. The power supply using LC filter, mainly to filter out high. The inverter is controlled by the instantaneous value feedback loop PID, which improves the quality of the output waveform. The parallel inverter is simulated in the Simulink component of Matlab, and it is tested and analyzed respectively to drive the dynamic current sharing effect of linear load and the effect of static load current of nonlinear load.
Keywords inverter power supply; SPWM; parallel operation; PID control
1 主電路參數(shù)設(shè)計(jì)與選型
1.1 直流電壓,額定電流與IGBT選型
選擇輸出線電壓有效值為380V+-5%,額定容量100kVA,故選擇直流電壓、額定電流如下:
注釋
[1] 楊蔭福,段善旭,朝澤云.電力電子裝置及系統(tǒng)[M].北京:清華大學(xué)出版社,2006:66-83.
[2] 俞楊威,金天均,謝文濤,呂征宇.基于PWM逆變器的LC濾波器[A].李輝.機(jī)電工程[C].杭州:浙江大學(xué)電力電子研究所,2007:50-52.
[3] 孫朝暉,吳浩偉,方斌,耿攀.采用PID和重復(fù)控制的逆變器波形控制策略[A].船電技術(shù)[C].武漢:武漢第二船舶設(shè)計(jì)研究所,2010:14-17.