Single Phase Dual Converter Circuit Diagram with Four Quadrant of Operation:

We have seen that Single Phase full Converters with inductive loads allow only a two-quadrant operation. If two of these full converters are connected back to back, it is known as Single Phase Dual Converter as depicted in Fig. 27.20 (a) , both the output voltage and the load current flow can be reversed. This system provides a four-quadrant operation as shown in Fig. 27.20 (b) and is called a dual converter. Dual converters are normally used in high-power variable speed drives. If α1 and α2 are the delay angles of converters 1 and 2 respectively, the average output voltages are Vdc1 and Vdc2.

Single Phase Dual Converter Circuit Diagram with Four Quadrant of Operation

The delay angles are controlled such that one converter operates as a rectifier and the other operates as an inverter; but both converters generate the same output voltage.

The average output voltage of converter 1 is given by

Single Phase Dual Converter Circuit Diagram

The firing angle α2 of converter 2 will be equal to (Ï€ – α1) and when converter 2 is operating as an inverter

Single Phase Dual Converter Circuit Diagram

Related posts:

  1. Four Quadrant Operation of Motor Drive
  2. Four Quadrant Drive With Field Reversal
  3. Two Quadrant Chopper
  4. Reversible Drive using Dual Converter
  5. Dual Converter Control of DC Separately Excited Motor
  6. What is Dual Power Supply? -Circuit Diagram and its Workings
  7. Four Phase Stepper Motor
  8. Single Phase Full Wave Controlled Rectifier (or Converter)
  9. Dual Beam CRO Block Diagram and Working Principle
  10. Single Tuned Amplifier – Circuit Operation and Limitations
  11. Single Line Diagram of Power System and Impedance or Reactance Diagram
  12. Three phase Transformer Bank of Single phase Transformers
  13. Difference Between Single Phase and Three Phase Induction Motor
  14. Derivation of Single Phase Quantity from Three Phase System
  15. Three Phase Auto Recloser vs Single Phase Auto Recloser
  16. Four Quadrants Converters
  17. Half Section in Four Terminal Network
  18. L Section in Four Terminal Network
  19. Digital to Analog Converter Circuit Diagram
  20. Three Phase Converter Circuit