New Interleaved Current-Fed Resonant Converter With Significantly Reduced High Current Side Output Filter for EV and HEV Applications

AC-DC converters with input power factor correction (PFC) that consist of two or more interleaved boost converter modules are popular in industry. PFC is a must in today's AC-DC converters as their input current must meet harmonic standards set by regulatory agencies.With interleaving, the input current of each module can make to be discontinuous and the size of their input inductors since interleaving can reduce the high ripple in each module and produce a net input current with a ripple that is comparable to that achieved with a single boost converter module with a large input inductor.In high-frequency converters, so as to achieve low harmonic, fast dynamic response, low size, and high-power density the frequency should be increased. The drawback of increasing the switching frequency is increasing the switching losses. This is reason that why soft-switching methods should be used. The focus of the thesis is on zero current switching (ZCS) methods for insulated gate bipolar transistor (IGBT) converters. The auxiliary switch in the proposed converter is activated whenever a main converter switch is about to be turned off, gradually diverting current away from the switch so that it can turn off with ZCS and eliminate the switching losses. In addition, the auxiliary circuit is designed in a way that it can be activated only when the converter is operating with heavier loads and not used when the converter is operating with light load to maximize the overall efficiency.The operation of the novel converter will then be explained and the mathematical analysis in steady-state will be derived. Based on the results of the analysis, general design guidelines will be provided. Finally, the design procedure will be confirmed by experimental results obtained from the proof of concept prototype.

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“…ZCS methods in boost converters have at least one of the following drawbacks [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]:…”

Section: Literature Reviewmentioning

confidence: 99%

A novel AC-DC interleaved ZCS-PWM boost converter

Rasoulinezhad

Abosnina

Moschopoulos

2018

2018 IEEE Applied Power Electronics Conference and Exposition (APEC)

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“…Consequently, the use of RPC circuits in the transmitter and the receiver sections allows for maximizing the magnetic field coupling and achieves the highest power transfer capability at the resonance frequency. Several RPC topologies for charging electric and plug-in hybrid vehicles are documented in the literature, both in the wired [38]- [41] and WPT [42]- [44] modes.…”

Section: Rpcs For Pssmentioning

confidence: 99%

“…These factors make RPCs appropriate topologies for EV battery charger applications. Many RPC topolo-gies for EV battery charging have been documented in the literature, such as the SRC and PRC [39]- [41], LCC and CLL [84], [101], and LLC [71], [102]. In this study, a CLL RPC topology with a hybrid control is presented that increases the efficiency of the EV battery charger.…”

Section: Cll Resonant Converter For Ev Battery Charger Applicationmentioning

confidence: 99%

Resonant Power Converters: An Overview with Multiple Elements in the Resonant Tank Network

Outeiro

Buja²,

Czarkowski

2016

EEE Ind. Electron. Mag.

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“…For connecting fuel cell stacks and PV panels to AC grids or DC grids [1,2], a voltage boost circuit and an isolation transformer are necessary. The high-voltage boost converters can be the voltage source type [3,4] or the current source type [5][6][7] circuit topologies. Normally, the input current ripple of the current source converters is much smaller than the voltage source converters.…”

Section: Introductionmentioning

confidence: 99%

“…Resonant converters [14][15][16] with frequency modulation have developed to achieve advantages of low switching losses at whole load range and high efficiency under low load conditions. Two boost converters and two full-bridge resonant converters with interleaved pulse-width modulation (PWM) are adopted in [5] to obtain high voltage gain and less input ripple current for electric vehicle (EV) and hybrid electric vehicle (HEV) applications. However, more power devices (10 power switches) are used in this circuit topology such that the cost is increased and the reliability is reduced.…”

Section: Introductionmentioning

confidence: 99%

Frequency-Controlled Current-Fed Resonant Converter with No Input Ripple Current

Lin

2018

Energies

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This paper studies a frequency-controlled current-fed resonant circuit. The adopted direct current (DC)-to-DC converter contains two boost circuits and a resonant circuit on the primary side. First, two boost circuits are connected in parallel to achieve voltage step-up and reduce input ripple current by using interleaved pulse-width modulation. Therefore, the size and current rating of boost inductors are decreased in the proposed converter. Second, the boost voltage is connected to the resonant circuit to realize the mechanism of the zero-voltage switching of all active switches and zero-current switching of all diodes. Two boost circuits and a resonant circuit use the same power devices in order to lessen the switch counts. The voltage doubler topology is adopted on the secondary side (high-voltage side). Therefore, the voltage rating of diodes on the high-voltage side is clamped at output voltage. The feasibility of the studied circuit is confirmed by the experimental tests with a 1 kW prototype circuit.

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New Interleaved Current-Fed Resonant Converter With Significantly Reduced High Current Side Output Filter for EV and HEV Applications

Cited by 62 publications

References 20 publications

A novel AC-DC interleaved ZCS-PWM boost converter

A novel AC-DC interleaved ZCS-PWM boost converter

Resonant Power Converters: An Overview with Multiple Elements in the Resonant Tank Network

Frequency-Controlled Current-Fed Resonant Converter with No Input Ripple Current

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