A distribution system is an interface between the bulk power system and the consumers. The radial distribution system is popular among these because of its low cost and simple design. The voltage instability in the power system is characterized by a monotonic voltage drop, which is slow at first and becomes abrupt after some time when the system is unable to meet the increasing power demand. Th...

In this paper we present a novel technique for OTA-C filter realizations with finite zeros based on doubly loaded passive ladder networks. Only grounded capacitors are needed; all floating capacitors are replaced with active simulations eliminating bottom-plate parasitic capacitors and non-observable poles. Bandpass, highpass and bandstop filters are easily obtained from a lowpass OTA-C prototy...

In traditional tantalum capacitors, the construction consists of a tantalum anode, Ta2O5 dielectric, and MnO2 as the cathode. The benefit of having MnO2, as the cathode, is the self-healing effect it provides. The conversion of MnO2 to a higher resistive state allows fault sites within the dielectric to be shut off from the rest of the capacitor. To mitigate problems developed during reflow, it...

This dissertation presents voltage stabilization techniques for flying capacitors used in soft-switching multilevel active power filters. The proposed active filter has proved to be a solution for power system harmonics produced by static high power converters. However, voltage unbalance of the clamping capacitors in the active filter in practical applications was observed due to its unequal pa...

A mechanism for the switching behavior of (111)-oriented Pb(Zr, Ti)O3-based 1 × 1.5 μm2 capacitors has been investigated using three-dimensional piezoresponse force microscopy (3D-PFM). A combination of vertical and lateral piezoresponse force microscopy (VPFM and LPFM) has been used to map the out-of-plane and the in-plane components of the polarization. The three-dimensional polarization dist...

Consolidation of shunt capacitors plays an important role in radial distribution networks. Among many of their merits, line loss and total harmonic distortion (THD) reduction, voltage profile improvement and reactive power compensation can be the salient specifications of shunt capacitors. Studies show that non-optimal locations shunt capacitor units lead to increase loss, together with bad eff...

PCB designs, it becomes more challenging to manage clean power supplies. The number of decoupling capacitors used for a power delivery system keeps increasing as well. This causes two problems for board designers and layout engineers: 1) How to determine the numbers and the types of decoupling capacitors needed for a particular design; and 2) Where to place the selected capacitors on board. Wit...

A novel MEMS resonator employing “capacitance-shaping” principle to generate sinusoidal signals is proposed. FEM simulations are done to study the structure. Preliminary characterizations on devices fabricated through SOI-MUMPS are carried-out to study the frequency tuning of the resonator by electrostatic actuation. Variants of the proposed structure are presented. Second order dynamical model...

In this paper, a soft-switched three-phase resonant converter with low quality factor (Q) design is proposed for Photovoltaic (PV) energy harvesting systems very wide range of operating conditions. Due to the (Q ≤ 1), voltage stress across capacitors drastically reduced. However, major challenge using Q switching frequency required operation over load and input order reduce range, paper introdu...

Power-electronic inverters are becoming popular for various industrial drives applications. In recent years also high-power and medium-voltage drive applications have been installed. However, the existing solutions suffer from some important drawbacks. Hybrid asymmetric multi-level inverters promise significant improvements for medium-voltage applications. This dissertation investigates such a ...