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 new bidirectional direct pulse width modulation (PWM) three-phase buck-boost ac–ac converter. It requires six switches and three inductors and can provide wide range buck-boost voltage operation. It has high reliability due to no short-circuit and open-circuit risks in the converter. Therefore, it solves the commutation problem without using lossy snubber circuits, soft commutation...
Stand-alone PV systems are increasingly being used in rural areas to drive basic loads typically less than 300 VA. Such systems are beneficial where grid electricity is unreliable or not present at all. A 250 VA battery integrated stand-alone PV system is proposed here. This PV system is based on simple hardware structure. It is possible to design this system at lower cost with higher reliability...
The reliability of monolithic integrated 200 V RC-snubbers in silicon is investigated both on wafer and module level. The wafer level measurements indicate that the capacitor dielectric is capable of repetitively withstanding 200 V pulses with a continuous use voltage of 150 V for 46 years with a failure rate of 1 ppm. Potentially early failing devices can be identified on wafer level by a screening...
This paper describes the design of a 48 kJ/s high-voltage capacitor charging power supply (CCPS), focusing on its efficiency, power density, and reliability. On the basis of a series-parallel resonant converter (SPRC) that provides high efficiency and high power density owing to its soft-switching, the design of the CCPS is explained in detail, including its input filter, resonant tank parameters,...
An isolated bi-directional full-bridge soft-switching dc-dc converter with high conversion ratio, high output power, soft start-up and soft-switching capability for battery charging/discharging is proposed in this paper. The use of an active flyback and two passive capacitor-diode snubbers can alleviate the voltage spike caused by the current difference between the leakage inductance of the transformer...
In this work, new results on an active fuse which is a novel power device to prevent serious hazards in power electronics in the case of a malfunction are presented. The focus of this work is on the characterization of the ldquocutout-bridgerdquo in terms of functionality and reliability. Different cutout-bridge geometries and the dc-arc behavior during fuse release is analyzed and by utilizing an...
In this paper, a high power single switch flyback power supply is presented. Performance of this power supply in continuous conduction mode is investigated in implementation. An appropriate efficiency is achieved by designing a proper snubber circuit. With regard to the importance of reliability in switch mode power supplies, reliability consideration is discussed for this high power flyback in details...
High reliability generating apparatus with a PWM rectifier equipped with a DC reverse-blocking diode is proposed. The PWM rectifier adjusts the power from a permanent magnet synchronous generator by means of position sensorless control. Due to the DC diode, the PWM rectifier is shoot-through free, i.e. the switches in one arm are not broken with their simultaneous turning-on caused by electromagnetic...
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.