【正文】 頻電源等各種非工頻電源，尤其是感應(yīng)加熱的中高頻電源；不停電電源、交流穩(wěn)壓電源等各種工業(yè)用電力電子電源；各種調(diào)壓器等等。電力電子裝置是靜止式裝置，占地面積小，重量輕，安裝方便（以焊接電源為例,與旋轉(zhuǎn)焊機相比，重量減輕80％,節(jié)能15％）。但電力電子裝置大多為電子開關(guān)式裝置，它往往對電網(wǎng)和負載產(chǎn)生諧波干擾，有時還對周圍環(huán)境引起一定的高頻干擾，這是在設(shè)計這些裝置和系統(tǒng)時必須妥善解決的（見高次諧波抑制）。70年代末以來，兩個方面的發(fā)展對電力電子技術(shù)引起了巨大的沖擊。其二為微電子技術(shù)、光纖技術(shù)等滲透到電力電子器件中，開發(fā)出更多的新一代電力電子器件。 隨著光纖技術(shù)的發(fā)展，美國和日本于1981～1982年間相繼研制成光控晶閘管并用于直流輸電系統(tǒng)。同時，場控電力電子器件也得到發(fā)展，如功率場效應(yīng)晶體管(power MOSFET)和功率靜電感應(yīng)晶體管(SIT)已達千伏級和數(shù)十至數(shù)百安級的電壓、電流等級，中小容量的工作頻率可達兆赫級。這些新器件均具有門極關(guān)斷能力，且工作頻率可以大大提高，使電力電子電路更加簡單，使電力電子裝置的體積、重量、效率、性能等各方面指標(biāo)不斷提高，它將使電力電子技術(shù)發(fā)展到一個更新的階段。電力電子技術(shù)創(chuàng)新98年末朱镕基總理明確指示，今后必須加快國家創(chuàng)新體系的建設(shè)，因此可以肯定的說，在21世紀(jì)初國家發(fā)展中，技術(shù)創(chuàng)新將要變成企業(yè)工作的主導(dǎo)內(nèi)容，而發(fā)展與建立適合中國國情的 電氣工業(yè)的技術(shù)創(chuàng)新機制，通過電力電子技術(shù)長足進步推動新型電氣工業(yè)不斷升級和進步進 而走向世界。為此電力電子技術(shù)的創(chuàng)新是與多種學(xué)科相互滲透并對各種工業(yè)領(lǐng)域有著極強的滲透性。電力電子技術(shù)又稱為能流技術(shù)，因此電力電子技術(shù) 的發(fā)展與創(chuàng)新是21世紀(jì)可持續(xù)發(fā)展戰(zhàn)略綱領(lǐng)的重要組成部分。電力電子技術(shù)的創(chuàng)新與電力電子器件制造工藝，已成為世界各國工業(yè)自動化控制和機電一體入高科技行業(yè)，就電力電子技術(shù)的理論研究言，目前日本、美國及法國、荷蘭、丹麥等西歐子技術(shù)向著高頻化邁進，實現(xiàn)用電設(shè)備的高效節(jié)能，為真正實現(xiàn)工控設(shè)備的小型化，輕量化我國開發(fā)研制電力電子器件的綜合技術(shù)能力與國外發(fā)達國家相比，仍有較大的差距，要發(fā)展和創(chuàng)新我國電力電子技術(shù)，并形成產(chǎn)業(yè)化規(guī)模，就必須走有中國特色的產(chǎn)學(xué)創(chuàng)新之路，從跟蹤國外先進技術(shù)，逐步走上自主創(chuàng)新，從交叉學(xué)科的相互滲透中創(chuàng)新，從器件開發(fā)選擇及電路結(jié)構(gòu)變換上創(chuàng)新，這對電力技術(shù)創(chuàng)新是尤其實用的。由此形成基礎(chǔ)積累型的并要把技術(shù)創(chuàng)新與產(chǎn)品應(yīng)用及市場推廣有機結(jié)合，已加快科技創(chuàng)新的自我強化的Power electronic technologyPower electronic technology is a new branch of applied to power field is to use the electronic technology, power electronics device (such as thyristor and GTO, IGBT etc.) to the electric power for transformation and control technology. Power electronic technology power which transform the power can be big to hundreds of MW GW even, also can small to several W even under and 1W leds, the information processing as information electronic technology different power electronic technology is mainly used in electric power transformation.introductionPower electronic technology into power electronics device manufacturing technology and munication technology (rectifier, inverter, the chopper, frequency conversion, covert, etc.) two branches.Has bee a modern electrical engineering and automation major indispensable specialized fundamental course, a door in cultivating the specialized talented person occupies an important position.Electric Power Electronics (Power Electronics) this name is in the 1960s appear. In 1974, the United States with a fall ewell (pictured) to power a triangle electronics are described, think it is by the power of science, electronics and control theory formed three course cross. This view is the world generally accepted. Power electronics and power electronic technology are respectively from the academic and technical engineering 2 different Angle to call.Generally, the birth of power electronic technology in 1957, the American general electric pany developed first thyristor for marks, the power electronic technology concepts and foundation was that the thyristor and brake canal converter technology development and establish. It has been used in power transformation of electronic technology, so thyristor can be called the period before appearance of power electronic technology prehistoric or dawn period. In the late 1970s with the door very can shut off the thyristor (GTO), a bipolar transistor (Power BJT), Power MOSFET (Power MOSFET) as a representative of allcontrolling devices full tilt (allcontrolling device characteristic is through the opposite extreme both grid or base control can make its opened again can make its shutoff), make the Power electronic technology now looks grately different entered a new stage of development. In the late 1980s, with a bipolar transistor insulation grid can be as MOSFET and (IGBT BJT pound) as a representative of plex device set drive power is small, the switching speed, low pressure drop, in normal flow capacity than a suit, superior performance has bee the modern power electronic technology leading device. In order to make power electronics device of pact structure, reduced volume, often put several power electronic devices and necessary auxiliary devices make module form, then the driver, control, protection circuit and power devices integration together, constitute a power integrated circuit (PIC). At present the power are still PIC smaller but it represents power electronic technology development an important direction.Using power electronics device implements industrial scale power transformation technology, sometimes also called power electronic technology. Normally, it is a form of industrial electrical energy converted into another form of industrial electrical energy. For example, will exchange power transformation to dc can or can transform into exchanges will dc power。 In normal ac power disruptions, using inverter (see power converter) will battery of dc can transform into industrial frequency ac power. Application of power electronic technology also can realize the power and power conversion between. For example, use the sun solar radiant energy battery will convert it to electricity. And electronic technology different, power electronic technology transform electrical energy is as energy rather than as a carrier of information sensor. So many people were concerned can convert electrical power.Power electronic technology is based on electronics, electrical principle and automatic control three subjects emerging disciplines. Because it is itself highpower electric technology, and are mostly for the application of industrial services amp。 Its theoretical basis for semiconductor physics。 2 can convert into ac power dc the inverter circuits。 (4) will be a form of dc can be converted into another form of dc can dc transform circuit. These circuits are included thyristor and each thyristor needs corresponding flipflop. Then cooperate with these power electronic circuit appeared many trigger control circuit. According to the device used, these control circuit may generally be divided into three generations. The first generation of control circuit mainly by the division of the electronic ponents (such as transistors, diodes) position. Until the late 1980s, still use too much. The second generation of the integrated circuit. Since