Output voltage regulation for piezoelectric transformer-based resonant power supplies using phase-locked loop
Output voltage regulation for piezoelectric transformer-based resonant power supplies using phase-locked loop
- Author(s): Z. Yang 1 ; J. N. Davidson 1 ; M. P. Foster 1
- DOI: 10.1049/icp.2021.1099
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- Author(s): Z. Yang 1 ; J. N. Davidson 1 ; M. P. Foster 1
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View affiliations
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Affiliations:
1:
Department of Electronic and Electrical Engineering, The University of Sheffield , George Porter Building, Wheeldon Street, Sheffield, S1 3JD , UK
Source:
The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020),
2021
p.
455 – 460
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Affiliations:
1:
Department of Electronic and Electrical Engineering, The University of Sheffield , George Porter Building, Wheeldon Street, Sheffield, S1 3JD , UK
- Conference: The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020)
- DOI: 10.1049/icp.2021.1099
- ISBN: 978-1-83953-542-0
- Location: Online Conference
- Conference date: 15-17 December 2020
- Format: PDF
This study proposes an output regulation method for a piezoelectric transformer (PT)-based power converter that employs an inductorless half-bridge topology for achieving zero-voltage switching (ZVS). The resonant current is first estimated at the input section of the PT. These data are used to indicate the effective signs for zero-voltage switching, applied to a phase-locked loop (PLL) as a reference input, to generate the in-phase gate drive signals with an adequate deadtime. Practical results show successful operation of the PLL controller. This technique is extended to achieve output regulation by a burst-mode hysteresis control. Experimental results demonstrate good agreement with the SPICE-based simulation for output regulation while achieving zero-voltage switching.
Inspec keywords: power transformers; zero voltage switching; voltage control; SPICE; bridge circuits; piezoelectric devices; phase locked loops; power convertors
Subjects: Power electronics, supply and supervisory circuits; Piezoelectric devices; Modulators, demodulators, discriminators and mixers; Power convertors and power supplies to apparatus; Control of electric power systems; Transformers and reactors; Voltage control