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The exhaustive list of topics in Power Electronic Applications in Power Systems in which we provide Help with Homework Assignment and Help with Project is as follows:

  • Load Balancing:
    • Transmission line theory
    • Use of Voltage source inverter (VSI) for reactive power support
    • Mid-point series and shunt compensation and HVDC.
    • Discussion on voltage profile at the point of common coupling (PCC)
    • Need for load compensation
    • Load balancing using passive elements.
    • Limitations of load balancing using passive elements
    • Use of VSI as a Var generator
    • Indirect current controlled synchronous link converter Var Compensator (SLCVC).
    • Various PWM techniques: Harmonic Elimination and space vector PWM techniques - Theory and implementation issues.
    • Discussion on bi-directional power flow in VSI
    • Use of VSI as active filter cum Var generator
    • Current controlled SLCVC
    • Strategy-1: Sensing the compensator current
    • Strategy-2: Sensing the source current
    • Use of two VSIs
    • One as Var generator and another as active filter.
    • Limitations of 2-level VSI
    • Discussion on the need for the change in power circuit configuration of 2-level VSI for high power application
    • Multi-level inverters.
    • Principle of operation of 3-level and 4-level diode clamped multi-level inverters.
    • Space vector representation of 3-level VSI
    • Voltage control of 3-level inverter.
    • Instantaneous reactive power theory
    • Expression for active and reactive powers in terms of d-q components.
    • Reactive power compensator using instantaneous reactive power theory
    • Stationary to rotating frame transformation.
    • Reference wave generation (hardware method)
    • Harmonic oscillator
    • Phase locked loop (PLL) Introduction on one cycle control
    • Discussion on one cycle controlled Var generator and active filter.
  • Shunt Compensation:
    • Methods of Var generation: Thyristor controlled reactor (TCR)
    • Thyristor switched capacitor (TSC)
    • Fixed capacitor-Thyristor controlled reactor (FC-TCR)
    • STATCOM.
  • Series Compensation:
    • Comparison between series and shunt compensation.
    • Various Equipment: GTO Controlled Series Capacitor (GCSC)
    • Comparison of TCR and GCSC
    • Thyristor Switched Series Capacitor (TSSC)
    • Thyristor Controlled Series Capacitor (TCSC).
    • Static Synchronous Series Compensator (SSSC)
    • Modes of operation
    • Voltage regulator and Phase Angle Regulator (PAR).
    • Multi functional FACTS controller: Unified Power Flow Controller (UPFC)
    • Control capabilities of UPFC
    • 2-port representation of UPFC.
  • HVDC:
    • Various possible HVDC configurations
    • Unipolar and bipolar links
    • Components of HVDC system: Converter, transformer, smoothing reactor, harmonic filter.
    • Reactive power support
    • Operation of 6-pulse controlled rectifier in inverting mode of operation.
    • Effect of source inductance
    • Equivalent circuit representation of 6-pulse converter considering effect of source inductance.
    • Operation of 12- pulse converter.
    • Control of HVDC system
    • Rectifier and inverter characteristics
    • Mode stabilization
    • Current control
    • Voltage dependent current order limit
    • Combined rectifier-inverter characteristics
    • Valve blocking and by-passing
    • Limitations HVDC system using line commutated converters
    • Modern HVDC system - HVDC light.