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      ղ    Ϊҳ
      Ʒ
      > IGBT >

      IGBTƽIͺ͡T͵·ıȽϷ

      ժҪ̫UPSIJϷչгIJЧʵҪҲԽԽƽ˽ṹӦ˶֪봫ͳƽṹƽṹʹIGBTϵѹ֮Ӣֱ-ֱ-funֱгСĵЧʸߵӢֱ-ֱ-funֱҪеƽоĻ”I”ͺ”T”͵·IJ˽зڲηĻԿعܵĹѡȡӢֱ-ֱ-funֱĵȷ˷ͱȽѡȡһʺϵƽ·Ӣֱ-ֱ-funֱԴhttp://www.menopause-defeated.com/bl/239.html
      һƽ·ʾͼ
      ĿǰIGBTƽ˽ṹкܶӢֱ-ֱ-funֱ˽ṹΪƽ“I”ͺƽ“T”ֽṹӲͬз
             ͼ12ʾƽ·ͼΪֵ·Ӣֱ-ֱ-funֱĸIGBTع·ͼеĵзʽӢֱ-ֱ-funֱǽǰ߳ΪI߳ΪT
             ƽ·ͨİŵ·ΪеԶԸƲĶкܺõЧӢֱ-ֱ-funֱ
      ƽ1ε·ʾͼ
      ͼ1. ƽ“1“ε·ʾͼ
      ƽTε·ʾͼ
      ͼ2. ƽ“T“ε·ʾͼ
      ֵ·IJη
      Ϊ˶ֵ·ĺ͹бȽֵ·IJӢֱ-ֱ-funֱͼ3Ӣֱ-ֱ-funֱͼ4ʾӢֱ-ֱ-funֱ
      ǶԲͼIJ˵Ӣֱ-ֱ-funֱ
      1.ͼbusҸԪΪԪ
      2.źŵķʽ
      ֵ·Ӣֱ-ֱ-funֱӢֱ-ֱ-funֱΪ㱾ѡͬźŲӢֱ-ֱ-funֱźŵľƷʽڲο[1][2]ͼʾQ1,Q3һPWMʱ䣩Q2,Q4 һPWMʱ䣩,Q1Q4֮Ҳʱ
      3.ͼмеiLͬӢֱ-ֱ-funֱҺе״̬ļοͼҲбʶӢֱ-ֱ-funֱ
      4.VLʾ뿪عĵѹͼпԿֵ·˵ѹͬ
      5.VLĸߵƽֵΪ1Vbusƽֵ߶ȱԴΪο
      1ƽ·η
      ͼ3 1ƽ·η
      Tƽ·
      ͼ4Tƽ·
      ֵ·ıȽ
      1Ӣֱ-ֱ-funֱӢֱ-ֱ-funֱعѹıȽϣ
      ƽI͵·4IGBTܾͬĵѹӢֱ-ֱ-funֱTQ1&Q4ܳĵѹӢֱ-ֱ-funֱֱĸΪ600VʱI4IGBTϵѹΪ600V/650V, TQ1&Q4Ϊ1200V. 1200VIGBTоƬ600V/650VоƬиĿļͨζоƬķȸҪĹоƬоƬɱҲȻ֮
      ȻʵI͵·Ӣֱ-ֱ-funֱعܵĵѹ2BUSѹʱԪIJӢֱ-ֱ-funֱعܳܵĵĵѹȫͬӢֱ-ֱ-funֱΪ˱֤عܵİȫӢֱ-ֱ-funֱI͵·пعҲӦճ2BUSѹȥʵʽǶȳӢֱ-ֱ-funֱڿѹѡ1͵·û̫
      2ĵıȽ
      ҪָӢֱ-ֱ-funֱĸعܿغ͵ͨ
      Ϊͨ·԰յ·ֳ״̬ղͬɫѱʾͼ3Ӣֱ-ֱ-funֱ4Ӣֱ-ֱ-funֱοӢֱ-ֱ-funֱ
      i.bus״̬Ӣֱ-ֱ-funֱ
      A, 1͵·+BUS,Q1,Q2Ӣֱ-ֱ-funֱ
      İLoss_Q1_turnon&turnoff Loss_Q1_On Loss_Q2_On
      B, T͵·Ӣֱ-ֱ-funֱ+BUSQ1
      İLoss_Q1_turnon&turnoff Loss_Q1_On
      Ƚϣ״̬ͨͼпԿLoss_Q1_turnon&turnoffӢֱ-ֱ-funֱ1͵·T͵·һQ2ĵͨ
      ii.bus״̬
      A, 1͵·ɵ,Q3,Q4bus
      İLoss_Q4_turnon&turnoff Loss_Q3_On Loss_Q4_On
      B, T͵·ɵ,Q4bus
      İLoss_Q4_turnon&turnoff Loss_Q4_On
      Ƚϣ״̬Ӣֱ-ֱ-funֱ1͵·T͵·һQ3ĵͨ
      iii.BUS״̬
      A, 1͵·Ӣֱ-ֱ-funֱɵоQ1diode,Q2diodebusӢֱ-ֱ-funֱ
      İ Loss_Q1diode_turnon&turnoff&on
      Loss_Q2diode__turnon&turnoff&on
      B, T͵·Ӣֱ-ֱ-funֱӢֱ-ֱ-funֱɵоQ1diodebus
      İ Loss_Q1diode_turnon&turnoff&on
      Ƚϣ״̬Ӣֱ-ֱ-funֱ1͵·T͵·һQ2ĵͨ
      iv.bus״̬
      A, 1͵·Ӣֱ-ֱ-funֱɸbusQ1diode,Q2diode
      İ Loss_Q3diode_turnon&turnoff&on
      Loss_Q4diode__turnon&turnoff&on
      B, T͵·Ӣֱ-ֱ-funֱɸbusQ1diodeӢֱ-ֱ-funֱ
      İ Loss_Q4diode_turnon&turnoff&on
      Ƚϣ״̬һ͵·T͵·һQ3ĵͨ
      v.еiL>0״̬
      A1͵·Ӣֱ-ֱ-funֱGNDD1Q2Ӣֱ-ֱ-funֱ
      İLoss_D1 Loss_Q2
      BT͵·GNDQ2Q3diode
      İLoss_Q2 Loss_Q3diode
      Ƚϣ״ֵ̬·Ľӽ
      vi.еiL<0״̬
      A1͵·ɵQ3Ӣֱ-ֱ-funֱD2GND
      İLoss_Q3 Loss_D2
      B, T͵·ɵӢֱ-ֱ-funֱQ3Q2diodeGND
      İLoss_Q2 Loss_Q3diode
      Ƚϣ״̬Ӣֱ-ֱ-funֱֵ·ĽӽӢֱ-ֱ-funֱ
      ۣͨϱȽϿԿе״̬״̬T͵·Ķ1͵·
      3ԪıȽ
      ˽ṹͼ׿ԿT͵·Ҫ1͵·DiodeӢֱ-ֱ-funֱڼٿռкô
      4.ʱͬ
      ƽIȹضQ1/Q4,ٹضڹQ2/Q3,ֹĸߵѹϵӢֱ-ֱ-funֱTʱϵҪӢֱ-ֱ-funֱIӢֱ-ֱ-funֱʱҪ4ԴT͹伫Ӣֱ-ֱ-funֱֻҪ3ԴӢֱ-ֱ-funֱ
       ITӢֱ-ֱ-funֱڹӽ1ʱӢֱ-ֱ-funֱƵ>16KHz,ƽIͣ600VĸЧʸƵʼʱ<16KHzӢֱ-ֱ-funֱƽTͣ1200VĸЧʸӢֱ-ֱ-funֱϵͳʱӢֱ-ֱ-funֱӦݲͬĿƵȥѡһЧʸߵ˽ṹӢֱ-ֱ-funֱ
      5.·ͬ
            Tڹ֮ת·ΪһӢֱ-ֱ-funֱI·ͬӢֱ-ֱ-funֱΪ̻·볤·Ӣֱ-ֱ-funֱ÷Ӣֱ-ֱ-funֱƽIʱҪעɢѹӢֱ-ֱ-funֱ
      ۣ
      ͨĵķԿTͺ1ƽ·Ƚѹ1͵·T͵·ȻʵӦýǶȷӢֱ-ֱ-funֱӢֱ-ֱ-funֱӢֱ-ֱ-funֱķTҪ1ԪӢֱ-ֱ-funֱTDiodeӢֱ-ֱ-funֱ
      ձĵķڽСĺͼСռ䷽T͵·Ƚ

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