機械外文翻譯--世界電力機車的發(fā)展-免費閱讀
【正文】 s largest electric lootive power in a (6400 kW), has bee China39。s countries use the frequency (50Hz) exchange system, or 25 Hz lowfrequency munication system. In this supply system, traction substation will be changed to threephase alternating current frequency of 25 kV singlephase AC power industry after exposure to the Inter. But in the electric lootive used on the string is still DC motor (which is the biggest advantage motor speed as simple as changing motor terminal voltage, it should be easy to achieve in the larger context of the lootive speed, but such Motor due to the mutator, manufacturing and maintenance are very plex, and also greater volume), the AC into DC lootive in the task pleted. The catenary system DC voltage than to raise a lot of contact wire diameter can be relatively reduced, reducing the consumption of nonferrous metals and construction investment did not. Therefore, the frequency munication system has been widely adopted by majority of the world39。 1958 年年初，該部機械工業(yè)部組織第一次訪問蘇聯(lián)考察。 1985 年還成功地發(fā)展了 SS4 型 8 軸貨運電力機車，這是我國最大功率的電力機車（ 6400 千瓦），已成為我國主要的重型貨運機車。與提高現(xiàn)有電力機車速度和大力發(fā)展高速鐵路相適應(yīng)，發(fā)展干線電力機車開始從直流傳動到交流的轉(zhuǎn)變。甚至完全靠內(nèi)燃機的美國，鐵路電氣化的呼聲也很高。 電力機車的發(fā)展取決于發(fā)展的電氣化鐵路。但這種機車具有優(yōu)良的牽引能力。 對于交 直流電力機車交流電源系統(tǒng)，世界上大多數(shù)國家使用的是頻率（ 50赫茲）交換系統(tǒng)，或 25 赫茲的低頻通信系統(tǒng)。中文 2510 字 世界電力機車的發(fā)展 電力機車本身的原始動機接受觸網(wǎng)發(fā)出的電流作為能源，由機車牽引電機驅(qū)動車輪。在此電力供應(yīng)系統(tǒng)中，牽引變電所將改為三相交流電頻率的 25 千伏單相交流電源，然后傳送到網(wǎng)絡(luò)。因此還是大有希望。建立一個真正意義上的電氣化鐵路首先要解決如何提供高電壓，改變標準的電力供應(yīng)問題。到 80 年代初，世界上有 50 多個國家和地區(qū)建設(shè)電氣化鐵路，蘇聯(lián)的總長度達到了四萬公里。到 20 世紀 90 年代，歐洲，日本和其他主要摩托車制造商幾乎 停止直流傳動電力機車的生產(chǎn)，交流電力機車已成為世界上電力機車發(fā)展的主流。然后又成功繼承發(fā)展 SS5 ， SS6 和 SS7 型電力機車。在那個時候，基本定型的觀念是：由于蘇聯(lián)使用 20 千伏單相交流系統(tǒng)Н 60 頻率電力機車，因此中方?jīng)Q定采取 25 千伏單相交流系統(tǒng)，并且頻率各不相同。s electric lootive also pay DC electric lootive. TACDirectexchange by exchange of nonelectric lootive traction motor mutator (that is, threephase asynchronous motors),which is in the motor manufacturing, performance, functionality, size, weight, cost, maintenance and reliability and so on than the motor mutator much easier. It is the failure of the electric lootive, is the main reason for speed rather difficult. This lootive has excellent traction capacity promising. Germanmade electric lootive E120 This is the lootive. The working principle of electric lootive, the current contact wire, and withstand electric lootive into the arch after reentering the circuit breaker after the main transformer, AC traction from the main transformer winding through silicon
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