1 / 27

AC-DC Converters or Rectifiers

Fixed voltage 1 or 3- phase ac. Fixed voltage 1 or 3-phase ac. Fixed voltage dc. Variable voltage dc. Diode rectifier. Fully controlled thyristor rectifier. Fixed voltage dc. Fixed voltage 1 or 3- phase ac. Variable. Fixed voltage 1 or 3- phase ac. Rectifier with Self Commutated

harley
Download Presentation

AC-DC Converters or Rectifiers

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Fixed voltage 1 or 3- phase ac Fixed voltage 1 or 3-phase ac Fixed voltage dc Variable voltage dc Diode rectifier Fully controlled thyristor rectifier Fixed voltage dc Fixed voltage 1 or 3- phase ac Variable Fixed voltage 1 or 3- phase ac Rectifier with Self Commutated devices Diode rectifier chopper Variable Voltage dc Voltage dc AC-DC Converters or Rectifiers Variable Voltage ac Fixed voltage 1 or 3- phase ac Fixed voltage 1 or 3- phase ac Transformer with taps Diode rectifier Variable Variable voltage dc Half-controlled thyristor rectifier Voltage dc

  2. f Fixed voltage Amplidyne variable 3-phase ac Voltage dc Fixed voltage ac Diode rectifier Variable voltage dc Variable voltage dc Ac motor Ac motor Dc generator Fixed voltage Magnetic amplifier Diode rectifier variable 1 or 3-phase ac Voltage dc

  3. Autotransformer Of fixed turns ratio Fixed voltage Lower (fixed) 3-phase ac Ac voltage Thyristor voltage controllers Fixed voltage variable 3-phase ac Voltage ac Magnetic amplifier Fixed voltage variable 3-phase ac Voltage ac Ac voltage controllers Transformer with taps Fixed voltage variable 3-phase ac Voltage ac

  4. Semiconductor chopper variable Fixed voltage dc Voltage dc

  5. Filter l d chopper Six step inverter L IM DC supply C V d Dc link Filter Filter Filter l l l d d d chopper Diode bridge Six step inverter PWM inverter PWM inverter L L L AC supply AC supply IM IM IM C C C V V V d d d Dc link Dc link Dc link DC supply

  6. L d CSI CSI V V d d chopper DC supply Induction motor Dc link Fully controlled rectifier AC supply Induction motor Dc link

  7. L l d d T T T 5 1 3 3-phase V ds V dl Ac supply Synchronous motor T T T 4 6 2 Source side converter Load side converter

  8. wm wm Tc Tv Ts o o Ts Tor que TF Tc Tv

  9. + w T L o +T -T -w

  10. w w m m o T l o T l

  11. p p t t

  12. p p t t

  13. Forward motion Reverse motion

  14. P P t

  15. Viscous Dry Fan IL Motor Friction v Friction w wL

  16. L T m v

  17. P= f (N) N P 1 P 2 N= f (t) P= f (t) P, t t t 2 1

  18. T T1 II Forward Motoring Counterweight Counterweight Empty cage Loadedcage III Reverse Motoring Counterweight Counterweight Empty cage TL I TL Load torque with loaded cage Load torque with empty cage IV Loaded cage

  19. TL Motor Load TM Fig. 2.10. Motor- load system

  20. M V W Fig. 2.12 Motor-hoist load system

  21. TL TL Stiction +i -T -T TL Fig. 2.2. Speed torque curve of dry friction load Fig. 2.3. Speed torque curves of Viscous friction load.

  22. + + -T -T +T +T - - Fig. 2.4. Speed torque curve of a fan type load. Fig. 2.5. Speed torque curve of a constant power load

  23. 2 h 1 W F Fig.2.7. Hoisting .mechanism Fig.2.6. Forces during the upgradient motion of a train,

  24. TL n Jn, J2, 2 J1, in 1 i2 M i1 N Fig.2.11. Motor-Load system with gears.

  25. TL ONE PERIOD Fig.2. 8. Speed-torque characteristic of a reciprocating compressor.

More Related