Solid-electrolyte tantalum capacitors were first developed and commercially produced in the 1950s. They represented a quantum leap forward in miniaturization and reliability over existing wound-foil wet electrolytic capacitors. While the solid tantalum capacitor has dramatically improved electrical performance versus wet-electrolyte capacitors, especially at low temperatures, today’s electronic...

For a dielectric solid surrounded by an electrolyte and positioned inside an externally biased parallel-plate capacitor, we study numerically how the resulting induced-charge electro-osmotic (ICEO) flow depends on the topology and shape of the dielectric solid. In particular, we extend existing conventional electrokinetic models with an artificial design field to describe the transition from th...

In an electrolytic capacitor-less inverter, source current harmonics are caused by LC-circuit resonance, and the power factor deteriorates. Therefore, inverter must reduce control without additional circuits. This paper proposes a method to in three-phase of permanent magnet synchronous motor drive. The proposed consists using full-state feedbacks LC-resonance state observer. validity is confir...

An improved modulation strategy based on minimum energy storage for DC-link capacitance reduction in a six-switch AC-AC converter is proposed. The proposed enables the capacitor to accumulate and release twice each complete switching cycle, achieving effect of “fast charging discharging”. Meanwhile, inversion rectification are modulated synchronously. Hence, there stored capacitor. Then, time a...