Comparative study of resonant and non-resonant DC-DC converter with parasitic LC components of high-voltage transformer

Takano, Hiroshi; Takahashi, J.; Sun, Junming; Nakaoka, Mutsuo

doi:10.1109/ias.1998.730351

Cited by 12 publications

(5 citation statements)

References 5 publications

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“…These applications include lasers, radars, X-Ray and other medical equipments [1]- [3]. In these cases the power flow is unidirectional and the conventional grid is the main source, being the load supplied through a high dc-link voltage.…”

Section: Introductionmentioning

confidence: 99%

A Three-Phase Multilevel Hybrid Switched-Capacitor PWM PFC Rectifier for High-Voltage-Gain Applications

Cortez

Barbi

2016

IEEE Trans. Power Electron.

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In this paper a three-phase multilevel PFC rectifier using the hybrid switched-capacitor concept is proposed. The converter is suitable for high voltage gain applications from conventional three-phase low voltage sources. The three-level voltage operation reduces the weight and bulk of the magnetic devices. The main advantages of the proposed converter are: low number of active switches, high voltage gain, sinusoidal currents, low voltage stress across all components and simple control. Both steady-state and dynamic analysis are investigated. Experimental results for a 7500 W/ 220 V-to-1600 V laboratory prototype with maximum efficiency of 97.78% are presented and discussed.

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Section: Introductionmentioning

confidence: 99%

A Three-Phase Multilevel Hybrid Switched-Capacitor PWM PFC Rectifier for High-Voltage-Gain Applications

Cortez

Barbi

2016

IEEE Trans. Power Electron.

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“…All of these resonant converters have some merits and demerits. However, a SRC is often used in high‐voltage power supplies because of its numerous advantages: it is free from possible saturation of the HVT, it absorbs the leakage inductance of the transformer into the power topology, it behaves as a current source, which provides inherent overload protection, it allows capacitive filtering at the output and gives high efficiencies over a wide range of loads, and it is able to provide a high output load current . A SRC can be operated in discontinuous conduction mode (DCM) with zero‐current switching (ZCS) or in continuous conduction mode (CCM) of operation under zero‐voltage conditions (ZVS) with switching frequency above resonance .…”

Section: Introductionmentioning

confidence: 99%

“…A SRC can be operated in discontinuous conduction mode (DCM) with zero‐current switching (ZCS) or in continuous conduction mode (CCM) of operation under zero‐voltage conditions (ZVS) with switching frequency above resonance . In the literature, many topologies of SRC have been proposed for high‐voltage applications . However, these topologies require a large number of power switches and, consequently, they have high conduction loss and low efficiency.…”

Section: Introductionmentioning

confidence: 99%

Series resonant high‐voltage DC–DC converter with reduced component count

Samsudin

Iqbal

Taib

2016

IEEJ Transactions Elec Engng

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This paper proposes a novel zero-current-switching series resonant high-voltage DC-DC converter with reduced component count. The series resonant inverter in the proposed topology has two power switches (insulated-gate bipolar transistors, IGBTs), two resonant capacitors, and only one high-voltage transformer (HVT) with center-tapped primary windings. The power switches are connected in the form of a half-bridge network. The leakage inductances of the transformer's primary windings together with the resonant capacitors form two series resonant circuits. The series resonant circuits are fed alternately by operating the power switches with interleaved half switching cycle. The secondary winding of the HVT is connected to a bridge rectifier circuit to rectify the secondary voltage. The converter operates in the discontinuous conduction mode (DCM) and its output voltage is regulated by pulse frequency modulation. Therefore, all the power switches turn on and off at the zero-current switching condition. The main features of the proposed converter are its lower core loss, lower cost, and smaller size compared to previously proposed double series resonant high voltage DC-DC converters. The experimental results of a 130-W prototype of the proposed converter are presented. The results confirm the excellent operation and performance of the converter.

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“…Though the transformer winding capacitance is not absorbed in the tank circuit, the SRC has been used in high-voltage converters due to several other advantages [4][5][6][7][8][9]. The most significant feature of the SRC is the ability to provide high output load current [1], [9][10][11][12][13][14]. Moreover, a pulse frequency modulated series resonant inverter has nearly zero switching loss when operating in the discontinuous conduction mode (DCM).…”

Section: Introductionmentioning

confidence: 99%

Fast response double series resonant high-voltage DC-DC converter

2012

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In this paper, a novel double series resonant high-voltage dc-dc converter with dualmode pulse frequency modulation (PFM) control scheme is proposed. The proposed topology consists of two series resonant tanks and hence two resonant currents flow in each switching period. Moreover, it consists of two high-voltage transformer with the leakage inductances are absorbed as resonant inductor in the series resonant tanks. The secondary output of both transformers are rectified and mixed before supplying to load. In the resonant mode operation, the series resonant tanks are energized alternately by controlling two Insulated Gate Bipolar Transistor (IGBT) switches with pulse frequency modulation (PFM). This topology operates in discontinuous conduction mode (DCM) with all IGBT switches operating in zero current switching (ZCS) condition and hence no switching loss occurs. To achieve fast rise in output voltage, a dual-mode PFM control during start-up of the converter is proposed. In this operation, the inverter is started at a high switching frequency and as the output voltage reaches 90% of the target value, the switching frequency is reduced to a value which corresponds to the target output voltage. This can effectively reduce the rise time of the output voltage and prevent overshoot. Experimental results collected from a 100-W laboratory prototype are presented to verify the effectiveness of the proposed system.

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Comparative study of resonant and non-resonant DC-DC converter with parasitic LC components of high-voltage transformer

Cited by 12 publications

References 5 publications

A Three-Phase Multilevel Hybrid Switched-Capacitor PWM PFC Rectifier for High-Voltage-Gain Applications

A Three-Phase Multilevel Hybrid Switched-Capacitor PWM PFC Rectifier for High-Voltage-Gain Applications

Series resonant high‐voltage DC–DC converter with reduced component count

Fast response double series resonant high-voltage DC-DC converter

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