Magnet field- and Radiation Tolerant New Power Supply System MARATON - Technical Overview. 22-Sep-03 1

Transcription

1 Magnet field- and Radiation Tolerant New Power Supply System MARATON - Technical Overview 22-Sep-03 1

2 Modular Power Supply System MARATON 2 Versions: To power crates (UEP6..) or generic electronics (PL5..) Water-cooling and air-cooling is possible Simple base version with minimal features (What is not there can not be damaged) Up to 12 independent channels in a single 3U box Channel to channel resistance > 10 kohm, max. Channel to channel voltage > 100 V possible Modular extendable to custom requirements 22-Sep-03 2

3 MARATON Basic Configuration Input: 320 V DC, 11 A EMI Input Filter FIM 320 V DC Rectifier for no-rad operation with AC supply Auxiliary Power MAM DC-DC Converter MDM max. 2*6 Channels Basic Control Clock and Powerfail Output: Up to 12 independent channels 22-Sep-03 3

4 MDM (Module Double MARATON) Components & Design is radiation tolerant All inductive components are magnetically shielded and encapsulated Cooling is done by attaching a water heat exchanger or a standard heat sink (needs forced air, no internal fan) Different regulation boards (MR...) available 22-Sep-03 4

5 Available Modules (MDM) Voltage Range maximum Current peak continuous maximum Power / Module maximum Magnetic Field Status V 46 A 40 A 2 * 250 W > 100 mt in design now V 23 A 20 A 2 * 300 W A ready & tested V 15 A 13 A 2 * 300 W > 100 mt future V 7.50 A 6.25 A 2 * 300 W > 100 mt in design now 22-Sep-03 5

6 Magnetic Test of MDM 15V/20A Output vs B field (x direction) Output voltage 15v/10A Output voltage 15v/20A Input current 15v/10A Input current 15v/20A output voltage Input current B field 22-Sep-03 Test was done at CERN by ESS 6

7 Available Regulation Boards Description M icrocontroler on Observation Board needed R AD Tests Status Standard Regulation Board (M RP) with nom inal values set by DAC yes TCC2: 722 G y, 7.99E+12 n/cm ² Louvain: 1.0E11 p/cm ² used since m any years DAC replaced by potentiom eters potentiom eters m oved from the regulation board to the front panel no TCC2: Since June 2003, no problem s no ready future All boards are available for fast regulation (crate power) and slow regulation (long wires) 22-Sep-03 7

8 MARATON Basic Configuration Input: 320 V DC, 11 A EMI Input Filter FIM 320 V DC Rectifier for no-rad operation with AC supply Auxiliary Power MAM DC-DC Converter MDM max. 2*6 Channels Basic Control Clock and Powerfail Output: Up to 12 independent channels 22-Sep-03 8

9 Basic Control Clock generation and power fail detection only Automatic switch on after input power is applied Switch off (by the regulation boards) in case of OVERVOLTAGE or OVERTEMPERATURE No other remote control or failure detection possible 22-Sep-03 9

10 Control with Parallel Interface Input: 320 V DC, 11 A External Switches and Measurement EMI Input Filter FIM Rectifier for no-rad operation with AC supply 320 V DC Auxiliary Power MAM DC-DC Converter MDM max. 2*6 Channels Basic Control and Observation MORT Output: Up to 12 independent channels 22-Sep-03 10

11 Parallel Interface (ParIF) Description Each sense line is connected to the ParIF connector via a protection resistor A combined STATUS / SwitchOn - line is available for each channel. All signals of 6 channels are fed to an 37-pin Sub-D connector The outer diameter of a 40-pin shielded, twisted-pair, halogen-free round cable (AWG26) is 12 mm Design of the power supply Basic Control and ParIF interface: ready Development time for the remote electronics: 2 man months 22-Sep-03 11

12 Control with CAN Interface Input: 320 V DC, 11 A CAN Connection EMI Input Filter FIM Rectifier for no-rad operation with AC supply Processor Control CANIF 320 V DC Auxiliary Power MAM DC-DC Converter MDM max. 2*6 Channels Basic Control and Observation MORT Output: Up to 12 independent channels 22-Sep-03 12

13 Can Interface (CanIF) Description Redundant microcontroller system (to be protected against SEE) All voltages, currents and temperatures are measured Separate status comperator can switch off bad channels in case of overvoltage, undervoltage or overcurrent (This function can be disabled by hardware) All information is transfered by CAN bus (2 wires) to the protected zone. Development time: 2 man months + RAD tests 22-Sep-03 13

14 Increase of the Input Voltage Input: 385 V DC, 9 A CAN Connection EMI Input Filter FIM Rectifier for no-rad operation with AC supply Processor Control CANIF 385 V DC Auxiliary Power MAM 385V DC-DC Converter MDM 385V max. 2*6 Channels Basic Control and Observation MORT Output: Up to 12 independent channels 22-Sep-03 14

15 Increase of the input voltage If a Power Factor Correction (PFC) is used to get sinusoidal input current, the power modules have to work at 385 VDC nominal. Radiation hardness of the power switches of the modules (FET / IGBT) is very sensitive to the increase of the voltage. Some tests done by ESS showed that the currently used transistors will not work at higer voltages Other transistors with higher break-down voltage have to be tested The total efficency of the modules will decrease 22-Sep-03 15

16 Sinusoidal Input Current Input: 230 V~, 16 A CAN Connection EMI Input Filter FIM AC-DC Converter Sinusoidal Current Processor Control CANIF 385 V DC Auxiliary Power MAM 385 V DC-DC Converter MDM 385 V max. 2*6 Channels Basic Control and Observation MORT Output: Up to 12 independent channels 22-Sep-03 16

17 Sinusoidal Input Current No need for a special power wiring Better efficency of the power modules because their input voltage is regulated locally Radiation test of the PFC control circuit and the power switch have to be done. The big main choke has to be magnetically shielded. Development time: 2 man months + RAD tests + MAG tests. 22-Sep-03 17

18 Example of a MARATON Crate Supply Ordered by ESS 3.3V/160A, 3*5V/80A, 48V/10A Regulation board with potentiometer settings Control with ParIF parallel interface Mains input: 320V DC in radiation / 230V AC for tests (no PFC) Water-Cooled Mechanically compatible with the standard LHC 9U power supplies 22-Sep-03 18