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AC–DC–AC converter-fed induction motor (IM) drive is mainly realized by back-to-back three-phase converters. However, fault in a single semiconductor switch will make it inoperative. To enable continued controllable operation in case of the faults occurring in the converter, the five-leg converter with a shared leg between the grid and load sides is a possible solution. However, this topology poses...
This paper presents a design of a permanent-magnet synchronous motor (PMSM) casing with organic phase change material (PCM), paraffin, stuffing to absorb and store the heat produced by the motor so as to prevent the motor temperature from sharp increase or decrease, and more important to avoid the motor from overheating. The paraffin is filled in the hollow motor casing on which some cavities are...
This paper deals with the operation principle of the oil-fuel supply system used in supersonic combustion wind tunnel based on variable frequency speed-regulating technology. The mathematical model which describes the characteristics of the system by analyzing the characteristics of all aspects of the system has been established. According to the flow control requirements and the mathematical model,...
This paper deals with the issue on the feed rate servo control for the spindle-less veneer. First, the working principle, transmission process of the spindle-less veneer lathe, and the expected feed rate function are studied and analyzed; then concluded that the key of peeling control is coordinating the feed rate of the tool post with the actual peripheral speed of the log. We use rotary encoders...
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