Paper |
Title |
Page |
THPPD062 |
Development of Digital-controlled Corrector Magnet Power Converter with Shunt as a Current Sensing Component |
3653 |
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- B.S. Wang, J.C. Huang, K.-B. Liu
NSRRC, Hsinchu, Taiwan
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In Taiwan light source (TLS), Bira MCOR power converter modules are adopted as the corrector magnet power converters, the output is regulated by analog PWM IC that caused nonlinear behavior at zero cross and the adjustment of compensator for difference kind of magnet load is inconvenient. In the thesis the analog regulation IC is replaced by a fully digital regulation control circuit to realize digital regulation control converter. With plugging the home-made fully DSP regulation control cards into MCOR30 that the current sensing component is a shunt, the switching losses of MOSFET was reduced and the cost that the component of current sense. With the fully digital regulation control circuit, the parameter of the compensator for different magnet load is very easy to adjustment. In addition, the feasibility and validity of MOSFET switching theorem is simulated with Matlab simulink and the performance of this power converter is verified, the output current ripple of this power converter could be lower than 10ppm, which is beyond the requirement of current TLS corrector power converter and qualified to be used in the future TPS facility.
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THPPD064 |
The Compensator Design of the Fully Digital Controlled Corrector Magnet Power Converter by Using LabView as the Development Tools |
3659 |
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- B.S. Wang, J.C. Huang, K.-B. Lin
NSRRC, Hsinchu, Taiwan
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The auto-tuning of PI-compensator for power converter is fulfilled by using the LabVIEW. The current error signals of the power converter with different PI compensating parameters are transferred by RS-232 or Ethernet communication interface from DSP card into LabVIEW and FFT analysis are calculated. The FFT analysis are stored in the batch file for further numerical analysis and the parameters with the best response is recognized which will be set as the default PI parameters. In addition, the feasibility and validity of auto-tuning theorem was verified by measuring the long-term stability of output current and during the long-term measuring period the stability and ripple current of the power converter are observed. In this thesis, the fully digital regulation controlled corrector magnet power converter with a shunt as the current sensing component was used as the developing platform. The auto-tuning theorem was realized and applied to the compensator of the power converter, and the best output current response of the power converter was fulfilled.
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