Charge transfer-based sensorless voltage feedback in HV capacitor chargers

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Rapid capacitor chargers are typically used to charge a bank of capacitors with the purpose of discharging it into a pulsed power load [1,3]. Previous research shows that the charging voltage of the load can be accurately calculated in real-Time using microcontroller software algorithms [1,5]. The objective of this paper is to report a hardware based approach to measure the charge transfer into the load capacitor and implicitly the capacitor charging voltage. The proposed circuit uses operational amplifiers in order to integrate the input charge. A microcontroller receives the integrated signal to compute the output voltage and stop the charging process when the target voltage has been reached. Failure to accurately detect the end of charge time could lead to an excessively large capacitor bank voltage. For this reason, the proposed method can be utilized as a primary means of end-of-charge detection in conjunction with a traditional voltage sensing scheme.

Original languageEnglish
Title of host publication2016 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages397-399
Number of pages3
ISBN (Electronic)9781509023547
DOIs
StatePublished - Aug 17 2017
Event2016 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2016 - San Francisco, United States
Duration: Jul 5 2016Jul 9 2016

Publication series

Name2016 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2016

Conference

Conference2016 IEEE International Power Modulator and High Voltage Conference, IPMHVC 2016
CountryUnited States
CitySan Francisco
Period07/5/1607/9/16

Keywords

  • Charge detection
  • End of charge
  • Pulled power
  • RCC
  • Rapid capacitor charger

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