電平箝位 的英文怎麼說
中文拼音 [diànpíngqiánwèi]
電平箝位
英文
clamping-
The following is the main works and conclusions of this thesis. the novel upfc needs high power rate because it is generally used in high voltage transmission lines. after studied high - power converters and the literatures of upfc, the main circuit topology of novel upfc base on diode - clamping multilevel inverter is presented and the principle of using novel upfc to eliminate zero sequence and negative sequence currents is analyzed
本文所做的主要工作及得出的主要結論如下：由於upfc一般用於高壓輸電線，其功率等級要求很高，在綜合研究大功率變換器和upfc現有文獻的基礎上，提出了基於二極體箝位多電平變換器的新型upfc的主電路拓撲，分析了用其來濾出高壓輸電線非全相運行時所產生的零序和負序電流的原理。The converter not only keeps all the characteristics of the basic zvs pwm h - fb tl converter, but also eliminates the voltage oscillation and voltage spike across the rectifier diodes in both three - level mode and two - level mode, leading to a reduced voltage stress of the rectifier diodes
本文在基本zvspwmh - fbtl變換器中引入兩只箝位二極體，無論是在三電平模式還是在兩電平模式，都可以消除輸出整流二極體反向恢復造成的電壓尖峰和振蕩，降低了輸出整流管的電壓應力。Based on studying of the multi - level technique, a variable frequency speed regulation system based on the diode clamped three - level inverter is introduced in this thesis in detail. it includes ac - dc - ac main power circuit, snubber circuit, isolated driving circuit by optical fibre, delay time circuit on powering, sampling circuit of current and voltage, protection circuit and etc. a distributed power system ( dps ) which can reinforced the system ’ s security is developed to solve the power supply of the whole system
本文在研究多電平技術的基礎上，研製了一套以二極體箝位式三電平逆變器為基礎的變頻調速系統，包括:交-直-交主功率電路，緩沖電路，光纖隔離驅動電路，上電緩沖延時電路，電流、電壓采樣電路，保護電路等。Zhou ping ? sen, wang hui ? zhen. a primary side clamping topology for two ? transistor forward converter j. power electronics, 2003, 37 ( 5 ) ： 4749
周平森，王慧貞.一種雙管正激變換器的初級箝位電路j .電力電子技術， 2003 ， 37 （ 5 ） ： 4749A novel single phase three - level inverter is proposed, which is named hybrid three level inverter. a leg of neutral - point clamped inverter takes place of one of the two legs of the conventional full - bridge inverter. the great advantage is the harmonics of the output voltage is reduced a lot, so the size of the output filter can be reduced greatly
本文提出一種單相復合式全橋三電平逆變器，它是將傳統全橋逆變器的一個橋臂換為中點箝位三電平橋臂，這樣逆變器可以輸出三電平的電壓波形，其諧波含量被大大減小，因此輸出濾波器的大小可以減小。Some protection strategies are proposed to prevent the vsc - hvdc from over - voltage and over - current damage in most fault conditions. digital simulation is done to verify the validity of the proposed protection strategy. ( 3 ) a control strategy for a diode clamped three - level vsc - hvdc system is proposed and is testified by digital simulation using netomac
（ 3 ）在比較和研究適用於vsc - hvdc容量提升的一些策略的基礎上，論證了目前提升vsc - hvdc容量的一個現實途徑是採用三電平vsc ，並提出了基於二極體中點箝位型三電平vsc的hvdc系統的一種控制策略，設計了相應的控制器，模擬結果證實所設計的控制器具有良好的穩定性和穩態控制精度。Sheng zhuan ? cheng, li guang ? yong, he huai ? qian. a new soft switching topology for double switching forward converter j. power electronics, 2001, 35 ( 3 ) ： 4346
周平森，王慧貞.一種雙管正激變換器的初級箝位電路j .電力電子技術， 2003 ， 37 （ 5 ） ： 4749Study on a high performance control for three - level npc voltage - source rectifier
三電平中點箝位整流器系統建模及基於李亞普諾夫直接法的控制方法研究分享友人