UPS设计基础

設計理論基礎篇(二)飛瑞股份有限公司研發中心課程綱要DC/DCCHARGER課後練習DC/DC0000Q4Q5BATD1012D1212D912L2L3C4C5D1112-BUSTx1+BUS●●●●利用PUSH-PULL(推挽式)架構,將電電池的能量轉換至BUS端,在經由INV轉換成AC到負載.工作原理Q4ON,Q5OFF:將BAT能量轉換至二次側Tx1將能量傳至+BUS,並對L2儲能0000Q4Q5BATD1012D1212D912L2L3C4C5D1112-BUSTx1+BUS●●●●Tx1將能量傳至-BUS,並對L3儲能Q4VDSQ5VGSQ4VGSQ5VDSIQ4)(LVV流二次側感應到一次側電激磁電流IVVVVIRV32NpON)-DS(Q4BAT)斜率Q4(DS(Q4)BATBATDS(Q5)Q4Q4)DS(ONDS(Q4)LLPSIINN0000Q4Q5BATD1012D1212D912L2L3C4C5D1112-BUSTx1+BUS●●●●N1:N2:N3:N4=Np:Np:Ns:NsN1N2N3N4二次側感應到一次側的電流激磁電流Q4OnQ5OffVD11VD12VL2IL2N1:N2:N3:N4=Np:Np:Ns:NsN1N2N3N40000Q4Q5BATD1012D1212D912L2L3C4C5D1112-BUSTx1+BUS●●●●L2VVVL2VIVVVVVVNN2V)VVV(VBUSD12(F)N3L2)斜率L2(BUSD12(F)N3L2D12(F)D12SPBATD10(F)N4N3D11Q4OnQ5OffN1:N2:N3:N4=Np:Np:Ns:NsN1N2N3N40000Q4Q5BATD1012D1212D912L2L3C4C5D1112-BUSTx1+BUS●●●●VD9VL3IL3L3VVVL3VI)VV(VVVVNN2V)VVV(VBUSD10(F)N4L3)斜率L3(BUSD10(F)N4L3D10(F)D10SPBATD12(F)N4N3D9VD10Q4OnQ5Off0000Q4Q5BATD1012D1212D912L2L3C4C5D1112-BUSTx1+BUS●●●●工作原理Q4OFF,Q5OFFL1,L2釋能,對+BUS&-BUS充電D9,D10,D11,D12同時導通(理想狀態)註:非理想狀態下,會跟變壓器二次側的漏感有關,D9,D11並不會馬上導通,會先釋放漏感能量後才導通.Q4VDSQ5VGSQ4VGSQ5VDSIQ40IVVVV)斜率Q4(BATDS(Q5)BATDS(Q4)0000Q4Q5BATD1012D1212D912L2L3C4C5D1112-BUSTx1+BUS●●●●N1:N2:N3:N4=Np:Np:Ns:NsN1N2N3N4Q4OffQ5Off0000Q4Q5BATD1012D1212D912L2L3C4C5D1112-BUSTx1+BUS●●●●N1:N2:N3:N4=Np:Np:Ns:NsN1N2N3N42222322)(VVVV2)(2)(12)(11L2)(1212)(1111D10(F)D10)(9D9LVVLVIVVLLLVVVVVVVVVBUSBUSLLBUSBUSFDFDBUSBUSFDDFDDFD斜率VD9VD10VD11VD12VL2IL2VL3IL33232323)(V3)(3)(12)(11L3LVVLVIVVLLLVVVVBUSBUSLLBUSBUSFDFDBUSBUS斜率Q4OffQ5Off工作原理Q4OFF,Q5ON將BAT能量轉換至二次側Tx1將能量傳至+BUS,並對L2儲能0000Q4Q5BATD1012D1212D912L2L3C4C5D1112-BUSTx1+BUS●●●●Tx1將能量傳至-BUS,並對L3儲能)(LVV流二次側感應到一次側電激磁電流IIRVVVVV32NpON)-DS(Q5BAT)斜率Q4(Q5Q5)DS(ONDS(Q5)DS(Q5)BATBATDS(Q4)LLPSIINNN1:N2:N3:N4=Np:Np:Ns:NsN1N2N3N40000Q4Q5BATD1012D1212D912L2L3C4C5D1112-BUSTx1+BUS●●●●Q4OffQ5OnQ4VDSQ5VGSQ4VGSQ5VDSIQ4IQ5Q4OffQ5OnN1:N2:N3:N4=Np:Np:Ns:NsN1N2N3N40000Q4Q5BATD1012D1212D912L2L3C4C5D1112-BUSTx1+BUS●●●●VD11VD12VL2IL2L2VVVL2VIVVVVNN2V)VVV(VVVBUSD9(F)N4L2)斜率L2(BUSD9(F)N4L2SPBATD9(F)N3N4D12D11(F)D11Q4OffQ5Off0000Q4Q5BATD1012D1212D912L2L3C4C5D1112-BUSTx1+BUS●●●●N1:N2:N3:N4=Np:Np:Ns:NsN1N2N3N4Q4VDSQ5VGSQ4VGSQ5VDSIQ4IQ5VD11VD12VL2IL2狀態與原理和之前Q4OffQ5Off同ChargerQ6OND5反向偏壓,將能量儲存在變壓器正半波整流AC轉換成DCBATD212D412D312D112VinQ6D512C2R1C1●●VinBATD212D412D312D112VinQ6D512C2R1C1●●Np:NsVD1VD2VD3VD4D4(F)D4D4(F)IND3D1(F)IND2D1(F)D1VV)VV(V)VV(VVVQ6OnVD5Q6VDSQ6VGSIQ6NpINNpD4(F)R1DS(Q6)D1(F)IN)斜率Q6(PSINBATPSD4(F)R1DS(Q6)D1(F)INBATD5Q6Q6)DS(ONDS(Q6)LVLVVVVVI)NNV(V]NN)VVVV(V[VVIRVBATD212D412D312D112VinQ6D512C2R1C1●●Np:NsQR1Q6On工作原理BATD212D412D312D112VinQ6D512C2R1C1Q6OFF變壓器儲存的能量對電池充電●●Q6OffBATD212D412D312D112VinQ6D512C2R1C1●●NpNsVD1VD2VD3VD4D4(F)D4D4(F)IND3D1(F)IND2D1(F)D1VV)VV(V)VV(VVVBATD212D412D312D112VinQ6D512C2R1C1●●NpNsQ6OffVD5Q6VDSQ6VGSIQ6NsBATNs5)斜率D5()(5D5)(5)(4)(1DS(Q6)LVLIV)(VDBATFDBATSPINSPFDBATFDFDINVVVVNNVNNVVVVVID5Q6OND5反向偏壓,將能量儲存在變壓器負半波整流AC轉換成DCBATD212D412D312D112VinQ6D512C2R1C1●●Vin其餘與正半波同,不在重複討論負半週課後練習DC/DC如Page3,若電池電壓VBAT=78V,N1:N2:N3:N4=4:4:24:24,+BUS=360V,-BUS=-360V,求Q4,D11最高電壓為何?Charger如Page15,若電池電壓Vin=220Vac,VBAT=72V,Np:Ns=34:21,Lp=260uH,求Q6,D1,D5最高電壓為何?ID5斜率為何?