摘要：矩陣變換器MC有許多突出的優(yōu)點(diǎn)，但它不像許多文獻(xiàn)中介紹的那樣是“純硅變頻器”，MC和交-直-交電壓型變頻器VSI一樣，也需要貯能元件，輸入濾波電容和過電壓鉗位電容就是MC的貯能元件。前者解決MC變換電路輸人電流波形跳變問題，后者吸收過流保護(hù)動(dòng)作時(shí)負(fù)載電感中貯存的磁場能量和實(shí)現(xiàn)動(dòng)能緩沖。二者的區(qū)別在于：VSI的貯能電容集中裝于一處，而MC分裝于兩處。還討論了電容的選擇原則。 關(guān)鍵詞：交一直一交電壓型變頻器矩陣變換器貯能電容 [b][align=center]Does a Matrix Converter Need Energy Storage Elements? M a Xiaoliang[/align][/b] Abstract：A matrix converter M C has many attractive features，but it is not a“pure silicon converter”1ike that mentioned in many papers．The MC needs energy storage elements also the same as a voltage source AC— DC—AC converter VSI．The input filter capacitor and clamp capacitor for over—voltage protection of the MC are its energy storage elements．The first one is used tO solve current jumping variation problem and the second one is used tO absorb the magnetic energy in load inductance when over current Occurs and tO realize ridethrough function．The difference of them is that，the energy storage capacitor of the VSI is installed in one place and the capacitors of the M C are installed in two places．The calculation principles of the capacities are discussed． Keywords：voltage source AC —DC —AC converter matrix converter energy storage capacitors 1 概述 矩 陣變換器想法的提出已有二十多年，有許多突出的優(yōu)點(diǎn)，但由于換流困難等原因，前期發(fā)展緩慢，近年來隨著這些技術(shù)難點(diǎn)的逐步解決，人們又紛紛看好它，現(xiàn)已成為電力電子變換最熱門的課題之一。矩陣變換器的突出優(yōu)點(diǎn)是：一次換流，效率高；正弦電壓輸出；正弦電流輸入，且電流可超前、滯后電壓或同相（功率因數(shù)等于1）；雙向功率流，4象限運(yùn)行等等。在幾乎所有涉及矩陣變換器的文獻(xiàn)中Ll 都提到，它還有另一項(xiàng)重要優(yōu)點(diǎn)，即不需要貯能元件，是“純硅變換器”。采用有源前端（AFE）的交一直一交電壓型變頻器具有矩陣變換器所有突出優(yōu)點(diǎn)，并且已經(jīng)在工業(yè)、交通中得到廣泛應(yīng)用，容量達(dá)數(shù)十兆瓦，其缺點(diǎn)是需要龐大貯能元件。我認(rèn)為矩陣變換器也需要貯能元件，它的這個(gè)優(yōu)點(diǎn)值得商榷，借此文談?wù)勎业目捶?，希望能拋磚引玉，引起討論。 [b][align=center]詳細(xì)內(nèi)容請(qǐng)點(diǎn)擊： 矩陣變換器真的不需要貯能元件[/align][/b]