外文中英文翻译光伏并网逆变器.docx

原文：Grid-connected?photovoltaic?system?using?current-source?inverterRecently,?there?has?been?a?growing?interest?in?alternative?energy?sources?because?fossil?fuel?and?atomic?power?plants?affect?the?environment?and?its?stability?(Nagao?and?Harada,1997;?Myrzlk,?2001).?Among?the?various?alternative?source?of?energy,?solar?power?stands?apart?as?it?is?a?clean?and?unlimited?source?of?energy?moreover,?a?considerable?amount?of?research?has?been?conducted?recently?in?this?field.?A?solar?power?system?consists?of?a?photovoltaic?module,a?charge?battery,?and?an?inverter.?Only?inverters?operating?in?current-source?mode?are?included?in?the?classification,since?one?of?the?aims?of?the?PV?inverter?is?to?inject?a?sinusoidal?current?into?the?grid.?To?embody?the?operation?of?a?single-phase-grid-connected?inverter?for?photovoltaic?module,it?has?general?topology?that?is?a?standard?full-bridge?voltage?source?inverter?(VSI),?which?can?create?a?sinusoidal?grid?current?(Kjaer?et?al.,?2005;?Kojabadi?et?al.,?2006).?This?topology?has?two?general?problem?as?below.?(1)?A?battery?is?essential?to?store?the?electric?energy?generated?by?a?solar?power?plant.?But?a?charge?battery?has?problems?on?it’s?a?short?duration?and?pollution?along?with?economic?efficiency.?However,?transmitting?the?generated?energy?directly?into?the?utility?line?without?using?a?battery?can?solve?these?problems.?In?this?process,?an?interface?circuit?called?an?inverter?links?the?direct?current?(DC)?output?from?the?solar?cell?array?to?the?AC?power?system.?It?does?not?matter?if?the?output?voltage?of?the?current-source-inverter?is?lower?than?the?power?system?voltage?and?in?case?of?a?shorted?load?or?inverter?malfunction,?it?does?not?have?a?surge?current?from?a?short-circuit?(Myrzlk,?2001).?(2)?In?general?a?microprocessor?is?used?as?the?controller?to?achieve?good?characteristics?when?designing?solar?power?systems?with?the?current-source-inverters.?In?the?controller,?to?reduce?the?value?of?the?inductance?and?the?ripple?of?the?output?current