Design and Analysis of Hysteresis Feedback Controlled dc Power Supply for Solid State Power Amplifier

Rohit Agarwal1 Homi Bhabha National Institute, Mumbai, Maharashtra400 094, India;2 ITER-India Institute for Plasma Research, Gandhinagar, Gujarat382 428, IndiaCorrespondence[email protected]

https://orcid.org/0000-0002-0634-5013 View further author information

Rajesh Kumar1 Homi Bhabha National Institute, Mumbai, Maharashtra400 094, India;2 ITER-India Institute for Plasma Research, Gandhinagar, Gujarat382 428, IndiaView further author information

Gajendra Suthar2 ITER-India Institute for Plasma Research, Gandhinagar, Gujarat382 428, IndiaView further author information

Hrushikesh Dalicha2 ITER-India Institute for Plasma Research, Gandhinagar, Gujarat382 428, IndiaView further author information

Abstract

Hysteresis feedback controlled synchronous buck converter-based power supply is designed and developed for biasing the transistors of Solid State RF Power Amplifier (SSPA). Design verification is done using PSIM software. The RF power requirement of SSPA varies from a few watts to 12 kW depending on RF application. It requires the power supply to have constant voltage and variable current. A comparative study of fixed frequency pulse width modulated (PWM) power converters and variable frequency hysteresis control power converter has been done. The advantages and challenges involved with hysteresis control are discussed. To operate SSPA, a 30–65 V, 320 A power supply is needed but to validate the power supply topology along with the controller, a prototype power supply developed with the same voltage rating and lower current rating of 10 AModular design is selected and operated with two parallel modules. The steady state and dynamic response are analyzed. Experimental and simulation results are in good agreement.

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Acknowledgements

This paper is written in partial fulfillment of requirements for M.Sc. (Engineering) from Homi Bhabha National Institute (HBNI), Mumbai, Maharashtra, India.

Additional information

Notes on contributors

Rohit Agarwal

Rohit Agarwal is a scientific officer in ITER-India, Institute for Plasma Research, Gandhinagar. He obtained his BTech (Electrical) from Aligarh Muslim University, Aligarh and pursuing his MSc (Engineering) from HBNI, Mumbai. He has six years of scientific research & development experience.

Rajesh Kumar

Rajesh Kumar is a scientific officer in Institute for Plasma Research, Gandhinagar and a faculty member of HBNI, Mumbai. He obtained his PhD Electrical) from Loughborough University, England. He has twenty-three years of scientific research & development experience. Email: [email protected]

Gajendra Suthar

Gajendra Suthar is a scientific officer in ITER-India, IPR, Gandhinagar. He obtained his BE (Electrical) from Gujarat University, Patan. He has twelve years of scientific R&D experience. Email: [email protected]

Hrushikesh Dalicha

Hrushikesh Dalicha is a scientific assistant in ITER-India, IPR, Gandhinagar. He obtained his diploma (Electrical) from Technical Education Board, Ahmedabad. He has ten years of scientific R&D experience. Email: [email protected]

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