The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper proposes a novel phase-shift plus duty cycle controlled hybrid bi-directional DC-DC converter based on fuel cells and supercapacitors. The described converter employs two high frequency transformers to couple the half-bridge and full-bridge circuits together in the primary side and voltage doubler circuit in secondary side. Boost type converter can limit the output ripple current of the...
This paper proposes an active-clamping zero-voltage-switching (ZVS) isolated inverse-SEPIC converter. The high voltage spikes when turning off the switches are eliminated. The energies stored in the parasitic elements can be recycled to achieve the ZVS of switches. Therefore the converter efficiency increases substantially, and the circuit cost is also reduced. Detailed analysis and design of this...
The paper reviews new power saving and efficiency regulations applied to server and telecom power supplies. It discusses aspects of system architectures with AC and DC uninterruptible bus on facility level, and then focuses on zero-voltage switching (ZVS), phase-shifted full-bridge DC/DC converter as a good candidate in such applications. The paper describes a new control strategy demonstrating power...
This paper presents a class D series resonant inverter with a series capacitor and an auxiliary switch. A capacitor and a switch connected in parallel are added to the series resonant circuit in series, which regulates the output power without frequency modulation. The entire impedance is changed by the difference between the switching frequency and the two resonant frequencies. While the auxiliary...
A parallel zero voltage switching (ZVS) forward converter with half-bridge topology is presented in this paper. Two converter modules are connected in parallel in the output side to share the load current. In the primary side, two converter modules use the same power switches so that the semiconductor devices are reduced in the proposed converter compared with the conventional interleaved half-bridge...
This paper presents a coupled-buck converter with active-clamp circuits. The active switches in the converter can sustain a long enough duty cycle while it operates with a high step-down voltage ratio, reducing current stress significantly. In the converter, the active-clamp circuits provided can have benefits of recycling the leakage energy, while minimum ringing voltage is across the active switches...
A bidirectional zero-voltage-switching (ZVS) and zero-current-switching (ZCS) full-bridge dc-dc converter is proposed in this paper. The proposed full-bridge converter topology with low ripple input current, which converts the energy from battery to DC bus (or load) and vice versa. In order to improve the overall efficiency, the proposed bidirectional converter uses the leakage inductance of the transformer...
A new ZVS-ZCS bidirectional DC-DC converter is proposed, which provides high output voltages 80v-180v. With proposed ZVS-ZCS concept, the MATLAB simulation results of the application to a fuel cell and battery application have been obtained and compared with those of ZVS bidirectional and applications in order to show the excellent performance of the proposed concept. In addition to this experimental...
A novel single-phase full-bridge soft switching rectifier (FBSSR) using a new resonance unit is proposed in this paper. All main switches in the proposed soft switching rectifier operate at zero-voltage-switching (ZVS) turn-on and turn-off. Moreover, the auxiliary switches operate at zero-current-switching (ZCS) turn-on and turn-off. Major benefits of this novel rectifier are found in efficiency improvement,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.