The high voltage inverter ndeye AC-DC-AC voltage sosi inverter ine akawanda-yuniti akatevedzana chimiro.Iyo inoziva sinusoidal waveform yekupinza, yakabuda voltage uye yazvino kuburikidza neakawanda superposition tekinoroji, inonyatso kudzora harmonics, uye inoderedza kusvibiswa kune magetsi grid uye mutoro.Panguva imwecheteyo, ine midziyo yekudzivirira yakakwana uye matanho ekudzivirirafrequency converter uye mutoro, kuitira kubvisa uye kudzivirira kurasikirwa kunokonzerwa nemamiriro akasiyana-siyana akaoma, uye kugadzira zvikomborero zvakakura zvevashandisi.
2. Kudzivirirwa kwehigh voltage inverter
2.1 Inopinda mutsetse kuchengetedzwa kweyakakwira voltage inverter
Inopinda mutsara kudzivirira ndiko kuchengetedza kwemushandisi inopinda mutsetse kupera uyefrequency converter, kusanganisira kuchengetedzwa kwemheni, kuchengetedzwa kwepasi, kuchengetedzwa kwechikamu chekurasikirwa, reverse phase kuchengetedza, unbalance protection, overvoltage protection, transformer protection nezvimwe zvakadaro.Aya maturusi ekudzivirira anowanzo kuisirwa mumagumo ekuisa inverter, usati wamhanyisa inverter inofanira kutanga yaona kuti hapana dambudziko mukudzivirira kwemutsara usati wamhanya.
2.1.1 Kudzivirirwa kwemheni imhando yekudzivirira kwemheni kuburikidza nechibatiso chakaiswa mubypass cabinet kana iyo yekupinza yekupedzisira ye inverter.Mubatisi mudziyo wemagetsi unogona kuburitsa mheni kana kuburitsa simba rekuwedzera kwesimba remagetsi system, kudzivirira midziyo yemagetsi kubva mukukuvadzwa kwepakarepo overvoltage, uye kucheka iyo inoenderera iripo kudzivirira iyo system pasi pasi pfupi.Iyo inosunga yakabatana pakati peiyo yekuisa mutsara weiyo inverter uye pasi, uye yakabatanidzwa mukufanana neyakavharidzirwa inverter.Kana iyo overvoltage kukosha inosvika kune yakatarwa yekushanda voltage, musungwa anobva aita, anoyerera nemuchaji, anodzikamisa overvoltage amplitude, uye inodzivirira iyo yekuvharisa midziyo;Mushure mekunge voltage yakajairika, anosunga anokurumidza kudzoreredza kune yake yekutanga kuti ave nechokwadi chekushanda kwakajairika kwehurongwa uye kudzivirira kukuvadzwa nekuda kwekurova kwemheni.
2.1.2 Kudzivirirwa kwepasi kuisa zero-sequence transformer mudziyo painopinza inoperera inverter.Nheyo yekudzivirira zero-sequence ikozvino yakavakirwa pamutemo weKirchhoff wezvino, uye iyo algebraic sum yeiyo yakaoma ikozvino inoyerera mune chero node yedunhu yakaenzana ne zero.Kana mutsara uye zvigadzirwa zvemagetsi zvakajairika, iyo vector sum yezvino muchikamu chimwe nechimwe yakaenzana ne zero, saka yechipiri mhepo ye zero-sequence ikozvino transformer haina chiratidzo chekubuda, uye actuator haishande.Kana imwe mhosho yepasi ikaitika, iyo vector sum yechikamu chimwe nechimwe chazvino haisi zero, uye iko kukanganisa ikozvino inogadzira magineti inoyerera muringini ye zero-sequence yezvino transformer, uye yechipiri voltage induction ye zero-sequence ikozvino transformer iri. kudzoserwa kubhokisi guru rekutarisa, uyezve mutemo wekudzivirira unopihwa kuti uwane chinangwa chekudzika kuchengetedzwa kwemhosva.
2.1.3 Kushaikwa kwechikamu, reverse phase, unbalance protection, overvoltage protection.Kushaikwa kwechikamu, reverse phase, unbalance degree dziviriro, overvoltage dziviriro inonyanya neiyo inverter input voltage feedback version kana voltage transformer yekutora mutsara wemagetsi, uyezve kuburikidza neCPU board kuona kana iko kushomeka kwechikamu, reverse phase, kuisa. voltage chiyero, kana iri overvoltage, nekuti kana chikamu chekupinza, kana reverse nhanho, uye voltage kusaenzana kana overvoltage zviri nyore kuita kuti transformer ipfute.Kana iyo unit yemagetsi yakakuvadzwa, kana mota inodzoserwa kumashure.
2.1.4 Dziviriro yeTransformer.Thehigh voltage inverter inongoumbwa nezvikamu zvitatu chete: Transformer cabinet, power unit cabinet, control cabinet composition, transformer is the use of tangential dry type transformer kushandura high-voltage alternating current kuita nhevedzano yemakona akasiyana emagetsi emagetsi emagetsi emagetsi emagetsi, iyo transformer inogona chete kunyoroveswa nemhepo inotonhorera, saka kuchengetedzwa kweiyo transformer kunonyanya kuburikidza nekudzivirira tembiricha yetransformer, kudzivirira tembiricha yetransformer yakanyanya kwazvo, uye ikonzeresa coil yekupisa.Iyo tembiricha probe inoiswa mune matatu-chikamu coil ye transformer, uye imwe mugumo wetembiricha probe yakabatana kune tembiricha yekudzora mudziyo.Iyo tembiricha yekudzora tembiricha inogona kuseta otomatiki yekutanga tembiricha ye fan pazasi pe transformer, tembiricha yealarm, uye tembiricha yerwendo.Panguva imwecheteyo, tembiricha yechikamu chimwe nechimwe coil inoratidzwa kakawanda.Ruzivo rwearamu rucharatidzwa mune yevashandisi interface, uye iyo PLC ichaita alarm kana kuchengetedzwa kwerwendo.
2.2 Yakakwira voltage inverter yekubuda parutivi kudzivirira
The output line protection yehigh voltage inverter ndiko kuchengetedzwa kwedivi rekubuda reinverter uye mutoro, kusanganisira yakabuda overvoltage kuchengetedzwa, kubuda overcurrent kuchengetedzwa, kubuda kupfupi dunhu kudzivirira, mota overtemperature kudzivirira uye zvichingodaro.
2.2.1 Output Overvoltage dziviriro.Iyo inobuda overvoltage dziviriro inounganidza iyo inobuda voltage kuburikidza nevoltage sampling board padivi rekubuda.Kana iyo voltage inobuda yakawandisa, sisitimu inozorira otomatiki.
2.2.2 Output Overcurrent Protection.Output overcurrent dziviriro inoona inobuda ikozvino yakaunganidzwa neHall uye inoienzanisa kuti ione kana ichikonzera overcurrent.
2.2.3 Output Short-circuit Dziviriro.Matanho ekudzivirira echikanganiso chepfupi pfupi pakati pe stator windings uye tambo dzinotungamirira dzemotokari.Kana iyo inverter ikaona kuti iyo inobuda ipfupi dunhu, inokurumidza kuvhara iyo simba unit uye inomira kumhanya.
Nguva yekutumira: Jul-28-2023