100-kV High Voltage Power Supply With Bipolar Voltage Output and Adaptive Digital Control

• Published in: IEEE transactions on plasma science Vol. 42; no. 10; pp. 2913 - 2918
• Main Authors: Giesselmann, Michael G., Vollmer, Travis T., Carey, William J.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-10-2014; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Adaptive control systems; Cables; Capacitors; Control equipment; Digital; Digital current mode control; dual polarity; Electric currents; Electric potential; Experiments; H-Bridge inverter; high frequency transformer; high voltage (HV) power supply; High voltages; Insulated gate bipolar transistors; Inverters; Oil insulation; Power transformer insulation; Transformer cores; Transformers; Voltage; Voltage control; Windings; high frequency transformer; Digital current mode control; H-Bridge inverter; dual polarity; high voltage (HV) power supply
• ISSN: 0093-3813; 1939-9375
• DOI: 10.1109/TPS.2014.2326838

This paper presents a 100-kV high frequency transformer/rectifier package, which is capable of a dual output polarity operation. An H-Bridge inverter drives the primary of the high voltage (HV) transformer at a frequency of 20 kHz. The inverter is driven by a Microchip dsPIC33F digital signal controller using peak current mode control with adaptive slope compensation. The HV-tank has two HV-coax output cables with a grounded shield on each cable. If the center conductor of the coax cable designated as negative output is grounded, positive voltage is obtained from the coax cable designated as positive output and vice versa. This paper provides design details and experimental results from tests of the entire system.