Analysis and design of parallel resonant convertor at high Q/sub L/

Kazimierczuk, Marian K.; Szaraniec, W.; Wang, S.

doi:10.1109/7.135431

Cited by 38 publications

(6 citation statements)

References 10 publications

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“…For this reason, the load range in which ZVS operation is achievable is narrow. However, this drawback does not exist in an inverter in which the load is connected in parallel with the resonant capacitor, e.g., in parallel resonant inverter [21]. An analysis of such circuits is recommended for further research.…”

Section: Discussionmentioning

confidence: 99%

ZVS class D series resonant inverter-discrete-time state-space simulation and experimental results

Czarkowski¹,

Kazmierczuk

1998

IEEE Trans. Circuits Syst. I

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A numerical analysis of a Class D zero-voltage switching (ZVS) inverter in the time domain is presented along with experimental results. A discrete-time state-space approach is used for simulation. The state-space description and simulation results provide a fast insight into the physical operation of the converter. The algorithm is fast, easy to implement, and suitable for systems with high spikes in the waveforms and variable inputs. The analysis shows that switching losses can be reduced by using a dead time in the transistor drive voltages and adding a single capacitor in parallel with one of the transistors. ZVS can be achieved above the resonant frequency and in a limited range of the load resistance. The numerical results are in good agreement with the experimental ones.

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Section: Discussionmentioning

confidence: 99%

ZVS class D series resonant inverter-discrete-time state-space simulation and experimental results

Czarkowski¹,

Kazmierczuk

1998

IEEE Trans. Circuits Syst. I

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“…1(b) and 1(c), and which have been discussed extensively in previous publications [7][8][9][10]. When using a compatible rectifier with a high frequency energy source, the high frequency rectifier, output filter and load can be modeled with an equivalent resistance, and existing theoretical formulas are useful for considering different characteristics of the converter output side [7][8][9]. Either in order to reduce the size of the power converters and increase power density in low output voltage applications, or because of the difficulties of building an inductor filter on the output side of high voltage DC power supply, many power converters are designed with pure capacitive output filters [2][3][4][5][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Two common types of output rectifier are the Voltage Driven Rectifier and the Current Driven Rectifier, which are presented in Fig. 1(b) and 1(c), and which have been discussed extensively in previous publications [7][8][9][10]. When using a compatible rectifier with a high frequency energy source, the high frequency rectifier, output filter and load can be modeled with an equivalent resistance, and existing theoretical formulas are useful for considering different characteristics of the converter output side [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Output rectifier analysis in parallel and series-parallel resonant converters with pure capacitive output filter

Shafiei

Ordonez

Eberle

2014

2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014

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This paper analyzes the behavior of a pure capacitive output filter in parallel and series-parallel resonant converters. Unlike traditional resonant voltageand current-driven rectifiers, pure capacitive output filters present interruptions in power transfer from the transformer primary to the secondary, owing to the existence of a parallel resonant capacitor. Therefore, existing formulas for different specifications of the output rectifier (e.g., output voltage ripple, efficiency, etc.) cannot be employed. This work provides detailed analysis of, and design equations for, pure capacitive output filters to cover the characteristic behavior of this rectifier. These valuable equations can be employed in the design of both low and high voltage power supplies for a variety of applications such as telecom power supplies and medical therapy instruments. Experimental results of a 10kVDC, 1.1kW power supply are presented to validate the analysis, along with other comparative experimental examples. With the rapid growth of low and high voltage applications, the equations will benefit researchers and R&D engineers in the area of resonant power conversion.

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“…To solve the efficiency and the noise problems in the diodes, Class D rectifiers [1]- [6], Class E rectifiers [5]- [33], and Class DE rectifiers [34]- [41] have been proposed. The features of Class D rectifiers, Class E rectifiers, and Class DE rectifiers are summarized in Table I. Class D voltage driven half wave rectifier [4]- [6] which is one of the Class D rectifiers, has the following features: the diodes turning on and off at ZVS (Zero Voltage Switching) and low dv/dt, and the low diode current stress which is no more than the output current. However, the diodes turn on and off at high di/dt, which causes more switching losses in high frequency range.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Class DE Current Driven Low <inline-formula><tex-math>$di/dt$</tex-math></inline-formula> Rectifier

Minami

Koizumi

2015

IEEE Trans. Power Electron.

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Class DE current driven low di/dt rectifier satisfies Class E switching condition and low diode current stress which is no more than the output current. Thus, the switching loss is decreased extremely. In this paper, the Class DE current driven low di/dt rectifier is analyzed for any diode-ON-dutyratio. The initial phase angle of the input current, the current and voltage transfer functions, the normalized input resistance and inductance, the normalized diode voltage stress, and the power-output capability are obtained and clarified as functions of the diode on-duty ratio and those of R/wL. Moreover, the power conversion efficiency and the circuit design method are shown. The circuit performance has been confirmed by the simulation results and the experimental results. In the simulation and the experiment, the characteristics of the output voltage and the power conversion efficiency against the amplitude of the input current, the load resistance, and the operation frequency have been obtained. In addition, the relationship between the equations, simulation results, and experimental results have been obtained. Theoretical, simulation, and experimental results were in good agreement each other.Index Terms-Class DE current driven low di/dt rectifier, zero current switching (ZCS), zero current derivative switching (ZCDS).

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Analysis and design of parallel resonant convertor at high Q/sub L/

Cited by 38 publications

References 10 publications

ZVS class D series resonant inverter-discrete-time state-space simulation and experimental results

ZVS class D series resonant inverter-discrete-time state-space simulation and experimental results

Output rectifier analysis in parallel and series-parallel resonant converters with pure capacitive output filter

Analysis of Class DE Current Driven Low <inline-formula><tex-math>$di/dt$</tex-math></inline-formula> Rectifier

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