인버터식 X선장치의 관전압 맥동율 개선에 관한 연구 = A Study on the Improvement of ripple factor tube voltage waveforms in inverter type X-ray generator

다국어 초록 (Multilingual Abstract)

In order to radiate X -ray, the low ripple stabilized high voltage DC over the range of 40KV to 150KV is directly inflicted to X -ray tube. The energy characteristics of the radiated X -ray depend on the pulsating waveforms of the DC voltage supplied X -ray tube In general, the low ripple voltage waveforms with fast rising times are required to increase with the dosage per unit I1me lest the exposure I1me should be longer in orde that the motion artifacts of an object may be eliminated in actual The conventional types of X -ray generators were bulky in physical size and heavy in weight, and the control accuracies of the output voltages were not always satisfactory. The high frequency switching inverter and converter technology on power conversion and control systems have been greatly closed up introducing new power semiconductor devices. To decreasing the volume and the weight of high voltage transformer, and to stabilize ripple, a high frequency PWM inverter is connected between DC source and high voltage transformer. This paper describes the output characteristics according to stabilize ripple of X -ray tube voltage and compared the reproducibility, direcibility and doesage.

목차 (Table of Contents)

• Abstract
  
• Ⅰ.서론
  
• Ⅱ.고주파 공진형 PWM인버터식 X선장치
  
• Ⅲ.직렬공진형 인버터식 X선 고전압장치의 modeling 및 시뮬레이션
  
• Ⅳ.실험 및 고찰
  
• Ⅴ.결론
  
• 참고문헌