Abstract
A new method is implemented in designing of self-oscillating loop for driving piezoelectric transformers. The implemented method is based on combining both analog and digital control systems. Digitized delay, or digitized phase shift through the self-oscillating loop results in a very precise frequency control and ensures an optimum operation of the piezoelectric transformer in terms of
voltage gain and efficiency. In this work, additional time delay is implemented digitally for the first time through 16 bit digital-to-analog converter to the self-oscillating loop. Delay control setpoints updates at a rate of 417 kHz. This allows the control loop to dynamically follow frequency changes of the transformer in each resonant cycle. The operation principle behind self-oscillating is discussed in
this paper. Moreover, experimental results are reported.
voltage gain and efficiency. In this work, additional time delay is implemented digitally for the first time through 16 bit digital-to-analog converter to the self-oscillating loop. Delay control setpoints updates at a rate of 417 kHz. This allows the control loop to dynamically follow frequency changes of the transformer in each resonant cycle. The operation principle behind self-oscillating is discussed in
this paper. Moreover, experimental results are reported.
Original language | English |
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Title of host publication | Proceedings of IEEE Applied Power Electronics Conference 2016 |
Publisher | IEEE |
Publication date | 2016 |
Pages | 1430-1436 |
ISBN (Print) | 978-1-4673-9550-2 |
DOIs | |
Publication status | Published - 2016 |
Event | 2016 IEEE Applied Power Electronics Conference and Exposition - Long Beach Convention & Entertainment Center, Long Beach, United States Duration: 20 Mar 2016 → 24 Mar 2016 Conference number: 31 https://apec-conf.org/uploads/documents/APEC-2016-FINAL-PROGRAM-BOOK.pdf |
Conference
Conference | 2016 IEEE Applied Power Electronics Conference and Exposition |
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Number | 31 |
Location | Long Beach Convention & Entertainment Center |
Country/Territory | United States |
City | Long Beach |
Period | 20/03/2016 → 24/03/2016 |
Internet address |
Keywords
- Optimum delay line
- Self-oscillating loop
- Phase shift
- Switch-mode power supply
- zero-voltage switching
- Piezoelectric transformer