Author: Chen, C.S.
Paper Title Page
WEPPD041 The Strategy between High Precision Temperature Control and Energy Saving for Air-Conditioning System 2603
  • Z.-D. Tsai, W.S. Chan, J.-C. Chang, C.S. Chen, Y.-C. Chung, C.W. Hsu, C.Y. Liu
    NSRRC, Hsinchu, Taiwan
  In the Taiwan Light Source (TLS), several studies related to the temperature stability for air conditioning system continued to be in progress. Using new control philosophy can minimize temperature variations effectively. A high precision temperature control within ±0.05°C for air condition system has been conducted to meet the more critical stability requirement. Due to the importance of energy saving issue, the power consumption of air conditioning system was also upgraded and intended to reduce extensively. The paper addresses some experience between high precision temperature control and energy saving about operation of air conditioning system. The significant improvements proven that both targets can achieve simultaneously.  
THPPD058 Reduction of Conductive EMI Noise Resulted from the Commercial Power Supply 3644
  • C.S. Chen, C.K. Chan, J.-C. Chang, Y.L. Chu, K.H. Hsu, C.Y. Kuo, Y.-H. Liu, C.S. Yang
    NSRRC, Hsinchu, Taiwan
  Almost every electronic equipment must be connected to power system. Because of the complexity of power lines, the reduction of conductive electro-magnetic interference (C-EMI) plays an important role in precise measurements. In this paper, a line impedance stabilization network (LISN) was built up to get the spectrum from power lines. After several measurements by some commercial power supplies, it is found that some of these power supplies induce effectively C-EMI into power lines, even if a passive filter is bound in power line. These noises may influence numerous equipments in a local area near the sources. Therefore, how to choose a suitable filter is a decisive factor to reduce the magnitude of C-EMI.  
THPPD059 Conductive EMI Reduction to Kicker Magnet Power Supply in NSRRC 3647
  • Y.-H. Liu, J.-C. Chang, C.S. Chen, H.H. Chen, J.-R. Chen
    NSRRC, Hsinchu, Taiwan
  The purpose of this paper is to estimate and reduce the conductive Electromagnetic Interference (EMI) from kicker magnet power supply in TLS. A LISN system was conducted to measure the EMI spectrum of kicker power supply. The EMI noise exceeded FCC standards in some frequency range especially during kicker firing. Reducing EMI level by using different EMI filters were applied. Double pi filter was more efficient than single pi filter. After using filter, the conducted EMI could diminish lower than FCC class B. The experimental results will provide useful information to future TPS pulsed magnet design.