Power Converters Division

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Converter Development Lab (CDL)

Power Converters for Indus-2

  1. Specifications and number of the magnet power converters developed by CDL
  2. Transport line-3 Dipole Magnet Power Converter
  3. Indus-2 Skew-Quadrupole Magnet Power Converter
  4. Indus-2 Sextupole Magnet Power Converter
  5. Indus-2 and TL-3 Steering Coil Power Converters

The specifications and number of the magnet power converters developed by CDL for transport-line (TL3) and Indus-2 respectively are listed in the following table:

System

Magnet

PS Output

Stability
(ppm)

No. of
PS

    Vmax(V)

   Imax(A)

Transport Line-3

Dipole

42
54

170
190

± 500
± 500

2
1

Steering coils

20

10

± 500

24

Indus-2

Skew quadrupole

22

200

± 1000

4

Sextupole

280

200

± 500

2

Steering coils

20
42

10
10

± 500

150



Transport line-3 Dipole Magnet Power Converter

The TL3 dipole magnet power converters energize three dipole magnets of Transport Line-3. These power converters are developed using 12-pulsed SCR regulator. All power devices and magnetic components are water-cooled. Two independent power converters for BM1 and BM2 are housed in one cabinet - they only share a common cooling water connection. Power converter for BM3 is housed in another cabinet.

TL3 Dipole Magnet Power Converter
TL3 Dipole Magnet Power Converter


Indus-2 Skew-Quadrupole Magnet Power Converter

Skew quadrupole coils are fitted on sextupole magnets. Total 4 power converters are required to energize these coils. These power converters are similar to TL3 dipole power converters. They are also developed using 12-pulsed SCR regulator. All power devices and magnetic components are water-cooled. Two independent power converters are housed in one cabinet - they only share a common cooling water connection.

Skew-quadrupole magnet power converter
Skew-quadrupole magnet power converter


Indus-2 Sextupole Magnet Power Converter

There are two families of 16 sextupole magnets (SF and SD) in the ring. All the 16 magnets in each family are connected in series. Each family is energized by separate power converters. The power converters are developed using 12-pulsed SCR regulator followed by a filter. A saturable inductor is also used in filter circuit so as to reduce the minimum continuous conduction current. All power devices and magnetic components are water-cooled.

Indus-2 Sextupole Magnet Power Converter
Indus-2 Sextupole Magnet Power Converter


Indus-2 and TL-3 Steering Coil Power Converters

These power converters are used to energize the steering coils to correct the beam position at different locations. Salient features of these power converters are: unity power factor at the input, bipolar load current ability with smooth transition from one polarity to other, higher load current stability and higher efficiency. Power stage consists of a boost converter in the input to ensure unity power factor, a full-bridge inverter to achieve isolation as well as required voltage at the load followed by full bridge inverter for changing polarity of the load current. Total 150 power converters required are arranged in 19 numbers of 32U cabinets. Each 32U cabinet is equipped with 4 numbers of 4U boxes. Each 4U box contains two power converters. All these power converters are operated by single phase, 230V, 50Hz

Steering coil power converter for Indus-2 and TL-3
Steering coil power converter for Indus-2 and TL-3


Steering coil power converters on Indus-2 gallery
Steering coil power converters on Indus-2 gallery

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