Resonant Immittance Converter Topologies

Borage, Mangesh; Nagesh, K. V.; Bhatia, M. S.; Tiwari, Sudeep

doi:10.1109/tie.2010.2047835

Cited by 85 publications

(35 citation statements)

References 23 publications

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“…An electrical networks composed of lumped reactive elements (inductors and capacitors) exhibiting ICC and having either a low-pass or band-pass frequency response, (consistent with the definition of a RC) has been termed a resonant immittance network (RIN) [12]. When a RIN is used in place of an ordinary RN in a RC, the resulting power converter topology…”

Section: Type-ii Ricsmentioning

confidence: 99%

“…An inverter (full-bridge, half-bridge or push-pull) excites the Type-II RIN with a high frequency square-wave voltage waveform. Figure 3 summarizes the 15 Type-II RINs, with three and four reactive elements, reported in [12]. In the nomenclature, T stands for T-type RIN, P stands for π-type RIN and LA stands for ladder-type RIN.…”

Section: Type-ii Ricsmentioning

confidence: 99%

“…RICs exhibit ICC only if various reactances obey certain conditions, which are satisfied only at a particular frequency of operation and when the values of the reactive elements are suitably chosen [12]. These circuits have different properties at other frequencies.…”

Section: Type-ii Ricsmentioning

confidence: 99%

“…Therefore, a separate class of RCs, referred to as resonant immittance converters (RICs), has been recently reported in [12], in which the resonant network (RN) exhibits ICC. In all, 24 RICs have been identified with three and four reactive elements, out of which 9 topologies (termed Type-I RICs) are suitable for CC to CV conversion and 15 topologies (termed Type-II RICs) are suitable for CV to CC conversion.…”

Section: Introductionmentioning

confidence: 99%

“…While a methodology for the steady-state analysis and design of RICs is well established and demonstrated [12] - [23], transient and small-signal analysis have not been reported. The dynamic response of a converter during transients must be considered while formulating its design procedure.…”

Section: Introductionmentioning

confidence: 99%

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Approximate Equivalent-Circuit Modeling and Analysis of Type-II Resonant Immittance Converters

Borage¹,

Nagesh²,

Bhatia³

et al. 2012

Journal of Power Electronics

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Resonant immittance converter (RIC) topologies can transform a current source into a voltage source (Type-I RICs) and vice versa (Type-II RICs), thereby making them suitable for many power electronics applications. RICs are operated at a fixed frequency where the resonant immittance network (RIN) exhibits immittance conversion characteristics. It is observed that the low-frequency response of Type-II RINs is relatively flat and that the state variables associated with Type-II RINs affect the response only at the high frequencies in the vicinity of the switching frequency. The overall response of a Type-II RIC is thus dominated by the filter response, which is particularly important for the controller design. Therefore, an approximate equivalent circuit model and a small-signal model of Type-II RICs are proposed in this paper, neglecting the high-frequency response of Type-II RINs. While the proposed models greatly simplify and speed-up the analysis, it adequately predicts the open-loop transient and small-signal ac behavior of Type-II RICs. The validity of the proposed models is confirmed by comparisons of their results with those obtained from a cycle-by-cycle simulation and with an experimental prototype.

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Section: Type-ii Ricsmentioning

confidence: 99%

Section: Type-ii Ricsmentioning

confidence: 99%

Section: Type-ii Ricsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Approximate Equivalent-Circuit Modeling and Analysis of Type-II Resonant Immittance Converters

Borage¹,

Nagesh²,

Bhatia³

et al. 2012

Journal of Power Electronics

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A phase synchronization control scheme for LCL‐T type high‐frequency current source in parallel connection

Zeng

Liu

Yang

et al. 2015

Circuit Theory & Apps

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Summary Considering the applications of high voltage gate driving system and contactless power transmission, a current‐based power distribution is adopted as a kind of replacement of voltage based high‐frequency Alternating Current (AC) power distribution system. In order to implement high‐frequency current source, an LCL‐T resonant inverter is examined with constant current characteristic and high conversion efficiency. First, the resonant topology is studied as a high‐frequency power source, including circuit principle, operational cycle analysis, and AC analysis. The effective control and high conversion efficiency are both achieved by LCL‐T resonant inverter. Second, the phase angle control scheme is explored to improve the synchronization performance in parallel system formed by multiple of LCL‐T resonant inverters. Lastly, a prototype of parallel system is evaluated by simulation and experiment results, both of which are constructed by two resonant inverters with rated peak current of 2 A, rated output frequency of 30 kHz, and rated output power of 100 W. The experimental results in accordance with simulation prove that the better phase synchronization of output currents is achieved by the phase angle control. Hence, the high‐frequency resonant topology and phase control scheme are a feasible realization of current source that can be used to feed current‐based high‐frequency power distribution system. Copyright © 2015 John Wiley & Sons, Ltd. Index Terms—high‐frequency AC (HFAC), power distribution system (PDS), LCL‐T resonant inverter, current source, phase angle control.

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Fifth‐order Π‐type load resonant converters analysis based‐on immittance property for constant output current applications

Khoshsaadat

Ehsanipour

2018

Circuit Theory & Apps

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Passive resonant tanks (PRTs) with immittance property are suitable candidates to achieve constant output current in load resonant converters (LRCs). In this paper, fifth-order Π-type LC networks are investigated to accede this target. At the first step, fifth-order Π-type passive LC networks that can be applied as a PRT are specified based on source and sink natures. Also, their structural advantages are described in detail to give a suitable perspective for the topology selection. At the second step, immittance property is verified for the proposed topologies and immittance PRTs (IPRTs), with their immittance operation conditions, are derived. To confirm the effectiveness, a 150-W LRC is implemented leveraging new Π-type IPRTs. A deep investigation is devoted to analyze the current/voltage stress in the components of the designed LRC. Moreover, kVA/kW ratio is considered as a key parameter for the reactive component size minimization. The proposed constant current LRC presents high load regulation capability in addition to the minimum reactive power and zero-voltage switching (ZVS) on the inverter MOSFETs under the various loads. A significant robustness against load variations, less sensitivity versus parameters variation, and relatively higher efficiency are the main superiorities of the fifth-order IPRTs to the lower order counterparts.

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Resonant Immittance Converter Topologies

Cited by 85 publications

References 23 publications

Approximate Equivalent-Circuit Modeling and Analysis of Type-II Resonant Immittance Converters

Approximate Equivalent-Circuit Modeling and Analysis of Type-II Resonant Immittance Converters

A phase synchronization control scheme for LCL‐T type high‐frequency current source in parallel connection

Fifth‐order Π‐type load resonant converters analysis based‐on immittance property for constant output current applications

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