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Boost converter

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Boost converter

  1. 1. DC-DC BOOST CONVERTER DESIGN FOR SOLAR ELECTRIC SYSTEM PRESENTED BY V.SNEHA(10891A0203) K.SWETHA(10891A0215) V.SUDARSHAN(10891A0218)
  2. 2. CONTENT BLOCK DIAGRAM BASIC BOOST CONVERTER SWITCHING DEVICE AND ICS ADVANTAGES DISADVATAGES APPLICATIONS
  3. 3. BLOCK DIAGRAM Dc loads Photo voltilic cell Solar charge controller battary Dc-dc boost converter inverter Ac loads
  4. 4. BOOST CONVERTER Output voltage always higher than the input voltage When the switch is ON: Diode is reversed biased output circuit is thus isolated inductor is charged. When the switch is OFF: The output stage received energy from the inductor as well as from the input. Filter capacitor is very large to ensure constant output voltage i iin + vLL– iD Iout L Vin C iL L iC + Vout – D + vL − Vd C S iL + vo − D + vL Vd S C + vo -
  5. 5. SWITCHING DEVICE In this MOSFET is used as switching device It is voltage-controled device and also it requires small input current Switching speed is very high It operates in nano sec’s
  6. 6. ICS Used for pulse genaration SG3525 HEF 7041 4425 IC High switching frequency up to 400khz
  7. 7. PULSE GENATATION
  8. 8. ADVANTAGES Only one switch High effecience Unidirectional output current Provides one polarity output voltage Low cost Easy to analyze Easy to understand Simple circuit
  9. 9. DISADVANTAGES Not sutable for high power conversion Low amount of dc step up Non isolated SMPS
  10. 10. APPLICATIONS Commanly used as LED driver Used for Solar power system Used for Power factor corrections Used in HVDC system Applicable for LCDBACKLIGHTS & FLASH LIGHTS Used in HVE(Hybrid electric vehicles)
  11. 11. ANY QUERIES
  12. 12. THANK YOU

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