Abstract: Variable frequency motor drives and control techniques are presented in which filter capacitor faults are detected by measuring filter neutral node currents and/or voltages and detecting changes in a frequency component of the measured neutral condition and/or based on input current unbalance.

Abstract: A method for making an integrated circuit system with one or more copper interconnects that are conductively connected with a substrate includes depositing and patterning a first dielectric layer to form a first via and filling the first via through the first dielectric layer with a copper material. The method further includes depositing and patterning a second dielectric layer in contact with the first dielectric layer to form a second via, and forming a diffusion barrier layer. Moreover, the method includes depositing and patterning a photoresist layer on the diffusion barrier layer, and at least partially filling the second via with a gold material. The gold material is conductively connected to the copper material through the diffusion barrier layer. The method further includes removing the photoresist and the diffusion barrier layer not covering by the gold material. Additionally, the method includes conductively connecting the gold material with the substrate.

Abstract: An electrical connector (100) includes an insulative housing (1), a front shell (4) and a back shell (5) fixed to the insulative housing (1) and a set of contacts (2) received in the insulative housing (1). The back shell (5) includes a base (51) covering a rear surface of the insulative housing (1) and formed with mating plates (512). The insulative housing (1) has two guide slots (173) extending forwardly from a back face (17) of the insulative housing (1). The back shell (5) is assembled to the insulative housing (1) from top-to-bottom, the guiding slot (173) guides the mounting plate (512) and finally receives the mounting plate (512) to retain the back shell (5).

Abstract: Variable frequency motor drives and control techniques are presented in which filter capacitor faults are detected by measuring filter neutral node current and/or voltages and detecting changes in the fundamental frequency component of the measured neutral condition at the fundamental frequency of the input power and/or based on input current unbalance.

Abstract: Power conversion systems and control techniques are presented in which a bus transient control component bypasses selected phases of a rectifier during a protective mode of operation to reduce common mode voltages or currents.

Abstract: Power conversion systems are presented with common mode reduction by space vector pulse width modulation zero vector selection to counteract common mode contribution of active vectors.

Abstract: The present techniques include methods and systems for detecting a failure in a capacitor bank of an electrical drive system. Embodiments include using discharge resistors to discharge capacitors in the capacitor bank, forming a neutral node of the capacitor bank. In different capacitor configurations, the neutral node is measured, and the voltage is analyzed to determine whether a capacitor bank unbalance has occurred. In some embodiments, the node is a neutral-to-neutral node between the discharged side of the discharge resistors and a neutral side of the capacitor bank, or between the discharged side of the discharge resistors and a discharged side of a second set of discharge resistors. In some embodiments, the node is a neutral-to-ground node between the discharged side of the discharge resistors and a ground potential.

Abstract: Current source converter drives and common mode voltage reduction techniques are presented in which a space vector modulation zero vector for current source inverter (or rectifier) control is selected according to the switching state of the current source rectifier (or inverter) and according to the AC input power and the AC output power to control the output common mode voltage.

Abstract: Power conversion systems and integrated multi-phase chokes providing high common mode to differential mode choke inductance ratios with circular and triangular shapes for concurrent differential filtering and common-mode voltage blocking in motor drives and other power conversion applications.

Abstract: A method for making an integrated circuit system with one or more copper interconnects that are conductively connected with a substrate includes depositing and patterning a first dielectric layer to form a first via and filling the first via through the first dielectric layer with a copper material. The method further includes depositing and patterning a second dielectric layer in contact with the first dielectric layer to form a second via, and forming a diffusion barrier layer. Moreover, the method includes depositing and patterning a photoresist layer on the diffusion barrier layer, and at least partially filling the second via with a gold material. The gold material is conductively connected to the copper material through the diffusion barrier layer. The method further includes removing the photoresist and the diffusion barrier layer not covering by the gold material. Additionally, the method includes conductively connecting the gold material with the substrate.

Abstract: Power conversion systems with active front end converters for example motor drives and power generation systems for distributed energy sources are presented with adaptive harmonic minimization for grid-tie converters for minimized or reduced total harmonic distortion in the line current spectrum including the source harmonic current and the grid-tie converter injected current spectrum referred to the line side.

Abstract: Current source converter drives and common mode voltage reduction techniques are presented in which a space vector modulation zero vector for current source inverter (or rectifier) control is selected according to the switching state of the current source rectifier (or inverter) and according to the AC input power and the AC output power to control the output common mode voltage.

Abstract: Variable frequency motor drives and control techniques are presented in which filter capacitor faults are detected by measuring filter neutral node current and/or voltages and detecting changes in the fundamental frequency component of the measured neutral condition at the fundamental frequency of the input power and/or based on input current unbalance.

Abstract: A system and method for integrated circuits with surrounding gate structures are disclosed. The integrated circuits system includes a transistor having a gate all around cylindrical (GAAC) nanowire channel with an interposed dielectric layer. The cylindrical nanowire channel being in a middle section of a semiconductor wire pattern connects the source and drain region positioned at the two opposite end sections of the same wire pattern.

Abstract: An integrated circuit system with one or more copper interconnects is provided. The one or more copper interconnects are in conductive contact with a substrate. The integrated circuit system includes a first dielectric layer, a copper material filling a first via through the first dielectric layer, a second dielectric layer in contact with the first dielectric layer, and a diffusion barrier layer. The diffusion barrier layer at least partially fills a second via through the second dielectric layer. At least a first part of the diffusion barrier layer is in direct contact with the copper material, and at least a second part of the diffusion barrier layer is in direct contact with the second dielectric layer. The integrated circuit system further includes a gold material at least partially filling the second via. The gold material is conductively connected with the copper material through the diffusion barrier layer and conductively connected with a substrate.

Abstract: Power conversion systems and methods are presented for damping common mode resonance, in which inverter or rectifier switching control signals are selectively modified according to a damping resistance current value computed using a predetermined virtual damping resistance value in parallel with an output or input capacitor and a measured output or input voltage value to mitigate or reduce common mode resonance in the converter.

Abstract: A non-volatile memory device includes a source region, a drain region, and a channel region therebetween. The channel region has a length extending from the source region to the drain region and a channel width in the direction perpendicular to the channel length direction. The device includes a floating gate positioned between the source and the drain in the channel length direction. The width of the floating gate is less than the channel width. A control gate covers a top surface and a side surface of the floating gate. The control gate also overlies an entirety of the channel region. Erasure of the cell is accomplished by Fowler-Nordheim tunneling from the floating gate to the control gate. Programming is accomplished by electrons migrating through an electron concentration gradient from a channel region underneath the control gate into a channel region underneath the floating gate and then injecting into the floating gate.

Abstract: A flash memory device, includes a case (1) having a chamber and an opening (1120) at one end thereof. A memory module (2) is received in the chamber and has a plug (22) formed at one end thereof. A pole (3) has a first portion (30) received in the chamber to drive the plug of the memory module moving in or out of the opening, and a second portion (31) opposite to the first portion. A revolver mechanism (5) has a main body (51) which is rotatable, and a spindle (52) assembled to the main body and rotatablely coupled to the second portion to drive the pole moving along a linear direction.

Abstract: Inductors are described for motor drives or other power converters having an inductor connected in a switching circuit, with one or more conductive shields positioned between an inductor coil winding and a flux-carrying inductor core leg to redirect flux away from the coil winding so as to inhibit heating of the coil.

Abstract: Power conversion systems and methods are presented for damping common mode resonance, in which inverter or rectifier switching control signals are selectively modified according to a damping resistance current value computed using a predetermined virtual damping resistance value in parallel with an output or input capacitor and a measured output or input voltage value to mitigate or reduce common mode resonance in the converter.