POPS: The 60MW power converter for the PS accelerator: Control strategy and performances

Boattini, Fulvio; Burnet, Jean-Paul; Skawinski, Gregory

doi:10.1109/epe.2015.7309267

“…It should be noted that four capacitor banks have no charger while other two capacitor banks can be charged from the main grid via AC/DC converters. Hereafter, a capacitor bank with or without chargers are referred to as a "floating capacitor" and a "charged capacitor", respectively [2] [3]. The usage of such floating capacitors can save the number of power transformers.…”

Section: Floating Capacitor Methodsmentioning

confidence: 99%

J-PARC Main Ring Upgrade toward High Repetition Rate Operation

Kurimoto

¹

,

Morita

²

,

Shimogawa

³

et al. 2021

Proceedings of the 3rd J-Parc Symposium (J-Parc2019)

0

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We plan to shorten the repetition period of the J-PARC Main Ring (MR) from 2.48 seconds to 1.32 in 2022. The key component for this upgrade is the power converter system of the main magnets, which will be renovated in 2021. The primal requirement for the new power converter is approximately twice higher output voltages than present ones so that the magnet ramping can be done fast enough for the period of 1.32 seconds. This corresponds to a peak output power of approximately 8 MW for the largest power converter. To reduce the peak input power at the main grid, we newly developed a power converter system with large capacitor banks. Our development involved not only the hardware such as IGBT (Insulated Gate Bipolar Transistor) bridge circuits but also the power control method among the capacitor banks and the magnets, and the main grid. We successfully performed the continuous operation of our new power converter with a peak input power of approximately 2 MW while the peak output power was approximately 8 MW. In this article, the design of the new converter system and our developed power control method are described based on the requirements.

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“…It should be noted that four capacitor banks have no charger while other two capacitor banks can be charged from the main grid via AC/DC converters. Hereafter, a capacitor bank with or without chargers are referred to as a "floating capacitor" and a "charged capacitor", respectively [2] [3]. The usage of such floating capacitors can save the number of power transformers.…”

Section: Floating Capacitor Methodsmentioning

confidence: 99%

Proceedings of the 3rd J-PARC Symposium (J-PARC2019)

2021

0

View full text Add to dashboard Cite

We plan to shorten the repetition period of the J-PARC Main Ring (MR) from 2.48 seconds to 1.32 in 2022. The key component for this upgrade is the power converter system of the main magnets, which will be renovated in 2021. The primal requirement for the new power converter is approximately twice higher output voltages than present ones so that the magnet ramping can be done fast enough for the period of 1.32 seconds. This corresponds to a peak output power of approximately 8 MW for the largest power converter. To reduce the peak input power at the main grid, we newly developed a power converter system with large capacitor banks. Our development involved not only the hardware such as IGBT (Insulated Gate Bipolar Transistor) bridge circuits but also the power control method among the capacitor banks and the magnets, and the main grid. We successfully performed the continuous operation of our new power converter with a peak input power of approximately 2 MW while the peak output power was approximately 8 MW. In this article, the design of the new converter system and our developed power control method are described based on the requirements.

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“…Collectively, they are referred to as Pulse-Power-Loads (PPLs). A dual DC/DC converter structure is usually preferred as the direct interface supplying high power PPLs [8]. The dual DC/DC provides mainly reactive power required by PPLs while the active power is soured from the DC bus.…”

mentioning

confidence: 99%

Model Predictive Control for Dual-Active-Bridge Converters Supplying Pulsed Power Loads in Naval DC Micro-Grids

Chen

¹

,

Shao

²

,

Xiao

³

et al. 2020

IEEE Trans. Power Electron.

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Pulsed-Power-Loads (PPLs) are becoming prevalent in medium-voltage naval DC micro-grids. To alleviate their effects on the system, energy storages are commonly installed. For optimal performance, their interface converters need to have fast dynamics and excellent disturbance rejection capability. Moreover, these converters often need to have voltage transformation and galvanic isolation capability since common energy storage technologies like batteries and super-caps are typically assembled with low voltage strings. In order to address these issues, a Moving-Discretized-Control-Set Model-Predictive-Control (MDCS-MPC) is proposed in this paper and applied on a Dual-Active-Bridge converter. Fixed switching frequency is maintained, enabling easy passive components design. The proposed MDCS-MPC has a reduced prediction horizon, which allows low computational burden. The operating principle of the MDCS-MPC is introduced in development of a cost function that provides stiff voltage regulation. Resonance damping and sampling noise resistance can also be achieved with the proposed cost function. An adaptive step is introduced to enable fast transition. Assessments on the performance of the proposed MDCS-MPC are conducted. Comparisons with other control methods are also provided. Experimental validations on a 300V/300V 20kHz 1kW Dual-Active-Bridge converter are carried out to verify the theoretical claims.

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POPS: The 60MW power converter for the PS accelerator: Control strategy and performances

Cited by 6 publications

References 1 publication

J-PARC Main Ring Upgrade toward High Repetition Rate Operation

J-PARC Main Ring Upgrade toward High Repetition Rate Operation

Proceedings of the 3rd J-PARC Symposium (J-PARC2019)

Model Predictive Control for Dual-Active-Bridge Converters Supplying Pulsed Power Loads in Naval DC Micro-Grids

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