The steady-state oscillation of a zero-voltageswitching clamped-voltage self-oscillating ballast driven by a saturable transformer is analyzed and simulated. Its selfoscillating operation is divided into six stages according to the hysteresis B–H loop of saturable transformer cores. Stage-wise circuit analysis shows the saturable transformer limits the lamp current and dominates the switching f...

Normalized mutual power of radiation, active and reactive, has been analyzed in this paper. The sound source is an annular plate, clamped to a planar, rigid and infinite baffle. The plate’s vibrations are axisymmetric and sinusoidal with respect to time. A Kirchhoff-Love’s model of a perfectly elastic plate has been used. First, the integral formulas for the mutual sound power have been present...

This paper intmduces the circuit and PWM control strategies of the Neutral-Point-Clamped (NPC) inverter and Cascade-Inverters with Separate DC Source (CISDS), analyzes and compares their advantages and disadvantages. A new type of Parallel Connected NPC inverter (PCNPCI) is proposed here. Based on inherited all merits of the three-level structures, only added very few components, it can produce...

Power MOSFETs require a gate drive circuit to translate the on/off signals from an analog or digital controller into the power signals necessary to control the MOSFET. This paper provides details of MOSFET switching action in applications with clamped inductive load, when used as a secondary synchronous rectifier, and driving pulse/gate drive transformers. Potential driver solutions including d...

Transformerless grid-connected inverters with highly efficient and reliable inverter concept (HERIC) positive-negative neutral point-clamped (PN-NPC) circuit configurations exhibit excellent performance in terms of overall efficiency, common-mode voltage, alleviated leakage current concern. These are designed to generate only a three-level (3 L) output voltage waveform, thereby reducing the pow...

Abstract All-clamped plate structures are usually subject to strong coupling, model uncertainties and system time-delay. To address these challenges, this work proposes a novel vibration control method based on linear active disturbance rejection controller (LADRC) with time-delay compensation (TDC-LADRC). The mathematical of the piezoelectric is first established identification an auxiliary va...

A two-to-three (2/3)-level dual-active-bridge (DAB) converter is a promising dc–dc for medium- and high-voltage applications. That due to its advantages like high power density, galvanic isolation, capability of withstanding higher voltage ratings compared the two-level DAB converters. However, open-circuit fault (OCF) critical 2/3-level converters, resulting in various negative effects, e.g., ...

A new first order voltage mode all-pass filter circuit using two differential difference current conveyors (DDCCs) (with suppressed output stages) as active elements and two passive components is proposed. The given circuit enjoys the features of high input impedance and low output impedance, which is desirable feature for voltage-mode circuits. In spite of employing two active elements the cir...

Peridynamics is a continuum theory that operates with non-local deformation measures as well long-range internal force/moment interactions. The resulting equations are of the integral type, in contrast to classical theory, which deals differential equations. aim this paper analyze peridynamic governing for elastic beams. To end, strain energy density formulated function curvature. By applying L...