PAC09 - List of Authors (Korepanov, A.A.)

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Korepanov, A.A.

Paper	Title	Page
TU6RFP016	Klystron Cathode Heater Power Supply System Based on the High-Voltage Gap Transformer	1562
	P.A. Bak, A.A. Korepanov, V.D. Zabrodin BINP SB RAS, Novosibirsk V. Vogel DESY, Hamburg
	Funding: This work was performed within the framework of the agreement between Deutsches Elektronen-Synchrotron (DESY, Hamburg) and BINP SB RAS (Russia, Novosibirsk), "Attachment N 18". Power system for the klystron cathode heater power supply has been developed to transfer 800 Watts up to 130 kV potential based on the high-voltage gap transformer. Power transfer has been implemented resonant way on the frequency of 19.5 kHz using coupled LC-loops with further transformation to DC. Transformer coupling factor is of 0.58, high-voltage gap is 49 mm, and maximum calculated electric field intensity is 35 kV/cm. Primary winding is powered by the full bridge inverter using phase shifted pulse modulation. This inverter topology provides soft switching of the transistors in a wide range of power regulation (from 18 up to 800 Watts) without an auxiliary active resonant snubber circuits. High stability (0.3%) of the output power has been reached using proportional regulation in the feedback circuit. The achieved power conversion efficiency of inverter is more than 0.95 in the regulation range; efficiency of the whole power system is more than 0.88. The reliable operation of the power system is guaranteed on three types of klystrons (Toshiba E3736; Thales TH1801; CPI VKL8301). The work has been performed within the European XFEL project.

Paper

Title

Page

TU6RFP016

Klystron Cathode Heater Power Supply System Based on the High-Voltage Gap Transformer

1562

P.A. Bak, A.A. Korepanov, V.D. Zabrodin
BINP SB RAS, Novosibirsk
V. Vogel
DESY, Hamburg

Funding: This work was performed within the framework of the agreement between Deutsches Elektronen-Synchrotron (DESY, Hamburg) and BINP SB RAS (Russia, Novosibirsk), "Attachment N 18".

Power system for the klystron cathode heater power supply has been developed to transfer 800 Watts up to 130 kV potential based on the high-voltage gap transformer. Power transfer has been implemented resonant way on the frequency of 19.5 kHz using coupled LC-loops with further transformation to DC. Transformer coupling factor is of 0.58, high-voltage gap is 49 mm, and maximum calculated electric field intensity is 35 kV/cm. Primary winding is powered by the full bridge inverter using phase shifted pulse modulation. This inverter topology provides soft switching of the transistors in a wide range of power regulation (from 18 up to 800 Watts) without an auxiliary active resonant snubber circuits. High stability (0.3%) of the output power has been reached using proportional regulation in the feedback circuit. The achieved power conversion efficiency of inverter is more than 0.95 in the regulation range; efficiency of the whole power system is more than 0.88. The reliable operation of the power system is guaranteed on three types of klystrons (Toshiba E3736; Thales TH1801; CPI VKL8301). The work has been performed within the European XFEL project.