Ye Huiping

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Foreign body ingestion is a common complaint in the emergency department. Severe upper gastrointestinal (GI) hemorrhage is a rare complication of foreign body ingestion and is always considered to signal aortoesophageal fistula (AEF). We report a rare case of a 65-year-old man with upper GI hemorrhage caused by an ingested duck bone 10 days previously.(More)
The efficiency of the charger in the electric vehicle can deeply effect the charging time and the utilization factor of the power source. The efficiency of the on-board charger with the bridgeless PFC can be improved by 2%∼4%. The structure of the charger was designed in the paper. At the same time, the theory of the bridgeless Boost PFC charger was(More)
The efficiency of the motor driving system in the electric vehicle affects the utilization factor of the power source and the driving range of the EV. The loss of the PMSM drive system is tested with the low speed. The modulation of carrier frequency in PMSM was discussed in this paper. According to the working situation of the EV, the carrier frequency(More)
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