A resonant DC-DC transformer

IEEE Trans. Power Electron.

Peretz

2006

Abstract-A new self-adjusting current-fed push-pull parallel inverter (SA-CFPPRI) is presented and tested by simulation and experimentally. The power source includes a soft switching control circuitry and a controllable inductor. The SA-CFPPRI can drive a capacitive load at any frequency within the design range. It will maintain zero voltage switching of the main transistors and follow the input frequency signal even when the resonant elements and/or the load vary. Possible range of applications for the proposed power source is: piezoelectric transformers and motors, ac bus for a distributed power system and other loads that need to be fed by a sinusoidal waveform. The experimental results of the laboratory unit (160 Vrms at 93 kHz and nominal output power of 5 W) verify the analytical analysis and proposed design procedure.Index Terms-Phase comparator, push-pull parallel resonant inverter (PPPRI), sinusoidal power source, variable inductor.

Section: Current-fed Push-pull Parallel Resonant Inverter (Cfppri)mentioning

confidence: 99%

A self-adjusting sinusoidal power source suitable for driving capacitive loads

IEEE Trans. Power Electron.

Peretz

2006

“…This however will reduce the characteristic impedance and hence increase the reactive current. The advantage of the PPRI in this case will be in the fact that the circulating current passes through the switches only during the boost period [5]. In the LC driver all the circulating current passes through the switches.…”

Section: Resultsmentioning

confidence: 99%

“…The proposed resonant driver is built around a current fed PPRI [5], [6] and a front end Buck converter (Fig. 6).…”

Section: The Push Pull Parallel Resonant Inverter (Ppri)mentioning

confidence: 99%

A resonant driver for a piezoelectric motor with single transistor direction switches

APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058)

Rozanov²,

Wasserman³

et al.

Self Cite

A resonant driver for a Piezoelectric Motor (PZM) is presented, analyzed and tested experimentally. Following a short description of the linear PZM applied in this study, the paper covers the analytical relationships of the buck driven push-pull parallel resonant inverter stage that includes a novel single transistor direction switches. It is shown that the proposed topology is compatible with the drive requirements of the PZM powered from a low voltage (24V). It is also demonstrated that, unlike simple resonant converters, the proposed topology is relatively insensitive to the resonant component values and that it can tolerate added capacitance as introduced when connecting a PZM to the driver via a long cable.

“…If the frequency of the gate drives is lower than the resonant frequency (Fig. 2b), the operation will include a "Boost" period in which one transistor and one antiparallel diode are carrying the inductor current [8,9]. This will cause distortion in the output voltage and will increase the conduction losses.…”

Section: The Current-fed Push-pull Parallel Resonant Inverter (Cfmentioning

confidence: 99%

A self-adjusting sinusoidal power source suitable for driving capacitive loads

Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04.

Peretz

Self Cite

Abstract-A new self-adjusting current-fed push-pull parallel inverter (SA-CFPPRI) is presented and tested by simulation and experimentally. The power source includes a soft switching control circuitry and a controllable inductor. The SA-CFPPRI can drive a capacitive load at any frequency within the design range. It will maintain zero voltage switching of the main transistors and follow the input frequency signal even when the resonant elements and/or the load vary. Possible range of applications for the proposed power source is: piezoelectric transformers and motors, ac bus for a distributed power system and other loads that need to be fed by a sinusoidal waveform. The experimental results of the laboratory unit (160Vrms at 93kHz and nominal output power of 5W) verify the analytical analysis and proposed design procedure.