POPSB - MPS / Main Power Supply |
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Power Converter Characteristics
Operation Responsibles
Power Converter ArchitecturePOPSB supplies the PSB magnets without drawing all the power from the network. A storage capacitor bank connected on the DC side provide power decoupling from the network. The storage capacitance is around 0.3F (@5kV Udc nominal) This exchange of energy between the capacitor banks and the load is controlled by a DC/DC converter. The system is connected to the electrical network by a AC/DC converter (Active Front End). This converter charges the capacitor banks and supplies the losses of the load and of the converters. Dipole and quadrupole magnets of the PSB accelerator are grouped in two independent series (“Magnet string 1&4” and “Magnet string 2&3” in Figure 2) each one powered by one POPSB.MPS power converter. In total there are three POPSB.MPS power converters: The three POPSB.MPS power converters are identical. POPSB.MPS converter architecture Power Part
The POPSB.MPS power converter is composed of an AC/DC (AFE) units which supply power to a DC/DC power converter. The capacitor banks are used to exchange the energy with the PSB magnets during converter pulsing operation. POPSB power converter schematic diagram As the current in the magnets rises, the voltage across storage capacitors drops. The energy stored in the magnets is then given back to capacitors at the end of the cycle. In this way the AFE converter provides only the losses required by the magnets and the converter itself. POPSB Magnet current & voltage POPSB Power balance Control & Regulation PartPOPSB power converter schematic block diagram POPSB control functional diagram POPSB control scheme The supervision application has been developed at CERN using the technologie WinCC-OA-UNICOS.Many views were developed for the operation and diagnostic: detail view on the AC/DC, DC/DC, capacitors banks, interlocks, etc.POPSB HMI view Magnet ProtectionThe booster magnets are protected by a WIC (Warm Interlock Controller) system installed in the BT, BTP, BTM transfer lines. The WIC is a Programmable Logic Controller (PLC) based system. It protects the normal conducting magnets from overheating by switching off the power converter when a fault occurs.PSB WIC supervision Magnet connection
POPSB Circuit connection Magnet Types
Dipole magnet. BHZ Main magnet characteristics.
QDE Quadrupole magnet. QFO magnet parameters. QDE magnet parameters.
Machine InstallationThe POPSB equipements are installed inside the building 245: POPSB 245 Layout
Production Contract & Contract History
Converter circuit names |