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.
Wireless power transfer (WPT) which can realize electric power transmission over certain distances without physical contact has been an active research topic in recent years. Reliable data transmission between primary side and secondary side plays an essential role in a well-designed WPT system. In this paper, electric power and data signal through the same inductive link and the S/P compensation...
This paper presents a novel structure of high step-up DC/DC converters intended for distributed generation systems such as fuel cells and photovoltaic (PV) systems. Proposed topologies integrate the classical Y-source impedance network with different step-up cells to acquire strong boost ability which is unmatched by existing impedance networks. Compared to Y-source, proposed converters reserve versatile...
In this paper, a high performance boost converter consisting of an integrated dual-boost converter and a voltage doubler is proposed. The converter possesses quadric voltage gain through single switch and the voltage doubler further increases the voltage gain as the turn ratio rises. The voltage stresses on the switch and diodes are decreased for such cascaded topology. Mathematical analysis of the...
This paper presents a new design strategy for S-LCC type compensation network in Inductive Power Transfer (IPT) systems. It was found that four resonant elements (three capacitors and one inductor) can compose two symmetric T type resonant tanks, which is well-known for its impedance transformation characteristic and reciprocity between voltage source and current source. A simplified analytical technique...
Traditional flyback LED driver is limited by its low performance which usually dissatisfy the power factor (PF) and Total Harmonic Distortion (THD) according to Energy Star or IEC61000-3-2. The control loop from secondary-side to the primary-side has low reliability to reduce the working lifetime and employs more components, which reduces the power density of system. In this paper, based on single-stage...
With the increasing demand of low-profile, high-power density for power electronics system, the planar magnetics (inductors and transformers) begin to be adopted in many fields. The copper tracks on printed circuit board (PCB) are mostly adopted as the windings of the planar magnetics which cannot be changed flexibly once the PCB is produced. So the design method of planar magnetics is an important...
The modular multilevel converter (MMC) has become more and more attractive in the field of high-voltage high-power dc/ac power conversions. In the very recent years, the dc/dc modular multilevel converter is proposed intended for high-voltage dc/dc applications, such as the solid-state transformers and future dc-grid networks, which is extended from the traditional MMC. However, it remains unknown...
In consideration of the complex condition of down hole environment, an ESP down hole multi-parameter comprehensive measurement system was designed in this paper in order to monitor the down hole information. Firstly, structures of the up hole section and down hole section of the system were introduced respectively. Then some key technologies on the system were illustrated in detail which consists...
H-bridge cascaded static synchronous compensator (STATCOM) is often used to compensate the harmonic and reactive current derived from non-linear load. However, with the special topology structure, the voltage balancing of DC capacitors of H-bridge cascaded STATCOM is a key problem. Many papers adjust active voltage to solve this problem with the conventional PI controller which needs to regulate the...
The capacitors voltage balance is one of the major problems in modular multilevel converter control which has not been resolved perfectly. Based on energy transmission analysis through steady state equations, this paper proposed a synthesized balance control scheme that involves leg voltage, arm voltage, individual voltage balance control and circular current control. Comparing with other methods,...
To monitor the Electric Submersible Pump (ESP) running state, a multi-sensor down hole test system was designed in this paper. It is the important corollary equipment of the ESP. It can offer a number of detailed parameters of down hole environment. Therefore, this can raise the working reliability and utilizing efficiency of ESP. First, considering the condition of high temperature, high pressure...
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.