Dozens of unsheltered people in Santa Rita Park did their best Tuesday to seek refuge from the sun on a day Tucson's temperatures peaked at 87 degrees. They huddled under trees, tents, umbrellas and ...

Abstract: Model-based sensorless control, which estimates the position and speed of a motor via mathematical analysis, has been studied using various methods because of its simple formula and adequate ...

Abstract: Regarding significant harmonics from the grid voltage side, a control strategy for a three-phase pulsewidth modulation (PWM) rectifier without alternating current (ac) voltage sensor based ...