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MPSB: 2GEV project. TE-EPC Group Meeting 26 of June 2009. Jean-Paul Burnet. MPSB: Actual configuration. Main problems: Not enough voltage due to 5% tolerance on network and commutation voltage drop Input transformer Irms above the limit of 1882A (2300A)

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mpsb 2gev project

MPSB: 2GEV project

TE-EPC Group Meeting 26 of June 2009

Jean-Paul Burnet

slide2

MPSB: Actual configuration

  • Main problems:
  • Not enough voltage due to 5% tolerance on network and commutation voltage drop
  • Input transformer Irms above the limit of 1882A (2300A)
  • 18kV power quality already critical. Increase in power pulses will lead to unacceptable voltage fluctuations
slide3

MPSB: Actual configuration

Alfa is fully opened but still the current does not rump-up as wanted

  • 2 Gev pulse

Irms (1.2s) = 2300A

Irms (1.2s) = 1700A

  • 1.4 Gev pulse

Power pulse increase

slide4

MPSB: New main power supply

  • 3 container 0.25F as in POPS needed:
  • Nmode: Ecap=3*0.5*0.25*(4500^2-3000^2)=4.2MJ
  • Dmode: Ecap=2*0.5*0.25*(5000^2-3000^2)=4MJ

3 transformers 2500MVA and 3 rectifiers as those used in POPS needed

  • 12.5 MCHF Electrical part
  • 2.0 MCHF Infrastructure
slide5

MPSB: New main power supply

  • To verify:
  • A considerable increase of power is needed from the grid. Need to check if this is possible
  • Irms in the magnet also increase. Thermal problems?
  • One big problem is the high magnet resistivity that asks for high input power. Is it possible to think of replacing the magnets with less resistive one?
      • -30% resistance means 2 MW less, 1 transformer+AFE less, 20MCHF electricity saving over 10years.