EPE Association: EPE 2015 - LS4f: Industry Specific Energy Conversion and Conditionning Technologies

EPE 2015 - LS4f: Industry Specific Energy Conversion and Conditionning Technologies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 09: Industry-Specific Energy Conversion and Conditioning Technologies > EPE 2015 - LS4f: Industry Specific Energy Conversion and Conditionning Technologies

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   Control of a Modular Series Parallel Resonant Converter System for a Solid State 2.88MW/115-kV Long Pulse Modulator
By Michael JARITZ [View]
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Abstract: In this paper, a control strategy of a modular serial parallel resonant converter (SPRC) modulator system is presented and verified by simulations. The system is based on two SPRC modules forming an input series output parallel (ISOP) stack. To obtain the given output voltage of 115kV, 8 of these ISOP stacks are connected in parallel at the input and in series at the output, forming an input parallel output series (IPOS) system. For designing the control of this system, a large signal model is derived and the influence of component tolerances is investigated. The performance of the controller is shown with simulation results. The simulation model of a single module is validated by measurement results.

   Control of an Active Bouncer for an Ultra Precise 140µs-Solid State Modulator System
By Sebastian BLUME [View]
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Abstract: In pulse modulator systems, bouncers are used for droop compensation of the main capacitor voltage. In this paper, the control of an active bouncer in a pulse modulator is described and the charging via a main charging system is analyzed. Six interleaved bouncer modules are situated on the primary side in series to the main capacitor bank, forming together with a pulse switch the pulse unit. To reduce the system complexity, the pulse unit is recharged with a single charging source. The proposed methods are verified by converter measurements on a single bouncer module. Additionally, a repeatability analysis of the pulse unit is performed and dependencies on initial voltages and switching jitters are derived. It is shown that in case of an open loop control and a standard deviation of the initial main capacitor voltage of sigma\_VMain(t=0) = 15ppm and the initial bouncer input voltage of sigma\_VBin(t=0) = 75ppm a pulse repeatability of PR inf. 100ppm is achievable in 99.7\% of the time.

   Grid Interface Design for the Compact Linear Collider (CLIC)
By Marija JANKOVIC [View]
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Abstract: This paper discusses the grid interface challenges for CERN's proposed Compact Linear Colliders' (CLIC) klystron modulators, including a 280 MW power system optimisation. The modular multilevel converter is evaluated as a candidate topology for a Medium Voltage grid interface along with a control method for reducing the impact of klystron modulators on the electrical network.

   Power electronics for a sealed container pasteurization working by electric resonance: first prototype experimental results
By Mauro CARPITA [View]
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Abstract: In this paper, the power electronic for an innovating pasteurization technology is presented. A specific high AC voltage, 120kV at a frequency as high as 800kHz, has to be generated in order to apply an alternating electrical field of 3kV/cm through the liquid.The high voltage generator is based on a modular approach. The module's inputs are paralleled on a DC voltage, while outputs are connected in series to generate the high AC voltage. The modules are made with an H-bridge and a transformer providing the required insulation. The system has been designed to obtain the simplest and most reliable connections.By controlling in real time the number of operating modules, the output voltage of the entire system can be quickly changed. With an accurate model of the system, the output voltage measurement is not necessary and permits to avoid complex and expensive sensors.The electronics have been build and tested. However, due to some air breakdown in high voltage inductances, a reduced voltage of 64kV @ 820kHz has been reached. The system optimization is foreseen for further research activities.

EPE 2015 - LS4f: Industry Specific Energy Conversion and Conditionning Technologies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 09: Industry-Specific Energy Conversion and Conditioning Technologies > EPE 2015 - LS4f: Industry Specific Energy Conversion and Conditionning Technologies
	[return to parent folder]

	Control of a Modular Series Parallel Resonant Converter System for a Solid State 2.88MW/115-kV Long Pulse Modulator By Michael JARITZ	[View] [Download]
Abstract: In this paper, a control strategy of a modular serial parallel resonant converter (SPRC) modulator system is presented and verified by simulations. The system is based on two SPRC modules forming an input series output parallel (ISOP) stack. To obtain the given output voltage of 115kV, 8 of these ISOP stacks are connected in parallel at the input and in series at the output, forming an input parallel output series (IPOS) system. For designing the control of this system, a large signal model is derived and the influence of component tolerances is investigated. The performance of the controller is shown with simulation results. The simulation model of a single module is validated by measurement results.

	Control of an Active Bouncer for an Ultra Precise 140µs-Solid State Modulator System By Sebastian BLUME	[View] [Download]
Abstract: In pulse modulator systems, bouncers are used for droop compensation of the main capacitor voltage. In this paper, the control of an active bouncer in a pulse modulator is described and the charging via a main charging system is analyzed. Six interleaved bouncer modules are situated on the primary side in series to the main capacitor bank, forming together with a pulse switch the pulse unit. To reduce the system complexity, the pulse unit is recharged with a single charging source. The proposed methods are verified by converter measurements on a single bouncer module. Additionally, a repeatability analysis of the pulse unit is performed and dependencies on initial voltages and switching jitters are derived. It is shown that in case of an open loop control and a standard deviation of the initial main capacitor voltage of sigma\_VMain(t=0) = 15ppm and the initial bouncer input voltage of sigma\_VBin(t=0) = 75ppm a pulse repeatability of PR inf. 100ppm is achievable in 99.7\% of the time.

	Grid Interface Design for the Compact Linear Collider (CLIC) By Marija JANKOVIC	[View] [Download]
Abstract: This paper discusses the grid interface challenges for CERN's proposed Compact Linear Colliders' (CLIC) klystron modulators, including a 280 MW power system optimisation. The modular multilevel converter is evaluated as a candidate topology for a Medium Voltage grid interface along with a control method for reducing the impact of klystron modulators on the electrical network.

	Power electronics for a sealed container pasteurization working by electric resonance: first prototype experimental results By Mauro CARPITA	[View] [Download]
Abstract: In this paper, the power electronic for an innovating pasteurization technology is presented. A specific high AC voltage, 120kV at a frequency as high as 800kHz, has to be generated in order to apply an alternating electrical field of 3kV/cm through the liquid.The high voltage generator is based on a modular approach. The module's inputs are paralleled on a DC voltage, while outputs are connected in series to generate the high AC voltage. The modules are made with an H-bridge and a transformer providing the required insulation. The system has been designed to obtain the simplest and most reliable connections.By controlling in real time the number of operating modules, the output voltage of the entire system can be quickly changed. With an accurate model of the system, the output voltage measurement is not necessary and permits to avoid complex and expensive sensors.The electronics have been build and tested. However, due to some air breakdown in high voltage inductances, a reduced voltage of 64kV @ 820kHz has been reached. The system optimization is foreseen for further research activities.