boost converter
DESCRIPTION
TRANSCRIPT
PRESENTED BY
V.SNEHA(10891A0203)
K.SWETHA(10891A0215)
V.SUDARSHAN(10891A0218)
DC-DC BOOST CONVERTER DC-DC BOOST CONVERTER DESIGN FOR SOLAR DESIGN FOR SOLAR ELECTRIC SYSTEMELECTRIC SYSTEM
CONTENTCONTENT
BLOCK DIAGRAMBLOCK DIAGRAM
BASIC BOOST CONVERTER BASIC BOOST CONVERTER
SWITCHING DEVICE AND ICSSWITCHING DEVICE AND ICS
ADVANTAGESADVANTAGES
DISADVATAGESDISADVATAGES
APPLICATIONSAPPLICATIONS
BLOCK DIAGRAMBLOCK DIAGRAM
Photo voltilic
cell
Solar charge controller
Dc loads
inverter
battaryDc-dc boost converter
Ac loads
BOOST CONVERTERBOOST CONVERTER
Output voltage always higher than the input voltage
When the switch is ON:When the switch is ON:
Diode is reversed biasedDiode is reversed biased
output circuit is thus isolated output circuit is thus isolated inductor is charged.inductor is charged.
When the switch is OFF:When the switch is OFF:
The output stage received energy The output stage received energy from the inductor as well as from from the inductor as well as from the input.the input.
Filter capacitor is very large to Filter capacitor is very large to ensure constant output voltageensure constant output voltage
Vd
L D
CS
+ vL
iL
+vo
Vin +
Vout
– C iC
Iout iin
iL
L
+ vL – iD
Vd
D
CS
+ vL -
iL
+vo
-
SWITCHING DEVICESWITCHING DEVICE
In this MOSFET is used In this MOSFET is used as switching deviceas switching device
It is voltage-controled It is voltage-controled device and also it requires device and also it requires small input currentsmall input current
Switching speed is very Switching speed is very highhigh
It operates in nano sec’sIt operates in nano sec’s
ICSICS
Used for pulse genarationUsed for pulse genaration
SG3525SG3525
HEF 7041 HEF 7041
4425 IC4425 IC
High switching frequency High switching frequency up to 400khzup to 400khz
PULSE GENATATIONPULSE GENATATION
ADVANTAGESADVANTAGES
Only one switchOnly one switchHigh effecienceHigh effecienceUnidirectional output currentUnidirectional output currentProvides one polarity output voltageProvides one polarity output voltageLow costLow costEasy to analyzeEasy to analyzeEasy to understandEasy to understandSimple circuitSimple circuit
DISADVANTAGESDISADVANTAGES
Not sutable for high power conversionNot sutable for high power conversion
Low amount of dc step upLow amount of dc step up
Non isolated SMPSNon isolated SMPS
APPLICATIONSAPPLICATIONS
Commanly used as LED driverCommanly used as LED driver
Used for Solar power systemUsed for Solar power system
Used for Power factor correctionsUsed for Power factor corrections
Used in HVDC systemUsed in HVDC system
Applicable for LCDBACKLIGHTS & Applicable for LCDBACKLIGHTS & FLASH LIGHTSFLASH LIGHTS
Used in HVE(Hybrid electric Used in HVE(Hybrid electric vehicles)vehicles)
ANY QUERIESANY QUERIES
THANK YOUTHANK YOU