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Copyright and Reprint Permission: Abstracting is permitted with credit to the source. Libraries are permitted to photocopy beyond the limit of U.S. copyright law for private use of patrons those articles in this volume that carry a code at the bottom of the first page, provided the per-copy fee indicated in the code is paid through Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923...
It is with great pleasure to welcome you to the 28th annual IEEE APEC to join other power electronics professionals for technical exchange and networking at the Long Beach Convention Center, in Long Beach, California. Over the past quarter of the century, APEC has become an optimum combination of technical content and application based focus. Having a strong and diverse technical program as well as...
At the time the proceedings went to print, the Professional Education Seminars listed herein were scheduled for presentation at APEC 2013. The actual seminars presented may have differed slightly from this list.At the time the proceedings went to print, the Professional Education Seminars listed below were scheduled for presentation at APEC 2013. The actual seminars presented may have differed slightly...
APEC 2014 continues the long-standing tradition of addressing issues of immediate and long-term interest to the practicing power electronic engineer. Outstanding technical content is provided at one of the lowest registration costs of any IEEE conference. APEC 2014 will provide a) the best power electronics exposition, b) professional development courses taught by world-class experts, c) presentations...
A new prototype of a secondary-side phase shifted (SPS) soft-switching PWM dc-dc converter is presented in this paper. In the proposed dc-dc converter, soft-switching operations are achievable from full to no loads by utilizing the parasitic inductances of the high frequency (HF) transformer. Beside that, no circulating current occurs in both of the primary and secondary side full-bridge circuits,...
Presents the table of contents/splash page of the 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC) proceedings record.
Small mismatches in inductor-applied volt-seconds may arise in power converters due to asymmetries in circuit parasitics or modulation waveforms. These small mismatches can have significant impact on circuit operation, including the saturation of magnetic components, loss of regulation, and decrease in converter efficiency. Various auxiliary circuits and control methods have been developed to prevent...
This paper presents a high boost ratio dc-dc converter with hybrid transformer for non-isolated photovoltaic (PV) microinverters. The proposed converter incorporates the resonant operation mode into the traditional high boost ratio active-clamp coupled-inductor PWM converter, achieving ZVS turn-on of the switches and ZCS turn-off of the diodes. As a result of the inductive and capacitive energy being...
This paper presents a high-efficiency zero-voltage-switching (ZVS) dc-dc converter combing resonant and pulse-width-modulation (PWM) power conversions for electric vehicle battery chargers. A half-bridge LLC circuit, which operates at series resonant frequency, shares the lagging-leg with a phase-shift-full-bridge (PSFB) dc-dc circuit to guarantee ZVS of the lagging-leg switches of the full bridge...
As the switching frequency increases, to reduce the gate drive loss combined with the Zero-Voltage-Switching (ZVS) technique is meaningful for the widely used Full-Bridge (FB) converters. A dual-channel isolated Resonant Gate Driver (RGD) is proposed in this paper. The proposed RGD is able to provide two isolated complementary drive signals for two power MOSFETs in one bridge leg. Furthermore, the...
Multi-level converters are widely used to convert high voltage DC (typically above 500V) to an isolated DC output voltage that may vary from 12V to 300V, depending on the application. Typical applications can range from network server power supplies to battery chargers for purely electric vehicles. Almost all these industrial applications require the converter to operate from no load to full load...
A novel isolated zero-voltage-switching (ZVS) bidirectional DC-DC converter (BDC) with coupled inductors is proposed in this paper. The series half bridge structure in the high-voltage side reduces the switch voltage stress to half of the high-side voltage, which extends the high-side voltage when using power MOSFETs. Furthermore, all the switches can achieve ZVS soft-switching performance at any...
A new three-phase dc-dc PWM boost converter is proposed in the paper. The proposed converter can operate with ZVS due to a simple auxiliary circuit that consists of just a single active switch and a few passive components and transfers energy through the three phase path with zero voltage switching (ZVS) capability with minimal electromagnetic noises. The number of components in the proposed circuit...
Switch cells consist of an array of power switches and passive components which can replace the main switches in many power topologies, allowing reduced switching loss without altering the power topology directly. This paper discusses the development of a switch cell topology that utilizes a saturable resonant inductor to reduce the size and power loss of the cell. Additionally, the cell transfers...
A novel Zero Voltage Switching (ZVS) approach to improve the efficiency of a single-stage grid connected flyback inverter is proposed in this paper. The proposed scheme eliminates the need for any additional auxiliary circuits to achieve soft-switching. ZVS of the primary switch is realized by allowing negative current from the grid-side through bidirectional switches placed on the secondary side...
A micro-inverter could be directly integrated with a PV panel to generate grid-compatible AC power. Placing two flyback converters in parallel as the DC-DC stage and utilizing interleaving extends the power range of flyback micro-inverters. In this paper, open-loop interleaving technique for flyback micro-inverter operating at the boundary conduction mode (BCM) and discontinuous conduction mode (DCM)...
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