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Latest News
What’s the most difficult question you’ve been asked as a maintenance instructor?
Blye Widmar
"Where are the prints?!"
This was the final question in an onslaught of verbal feedback, comments, and critiques I received from my students back in 2019. I had two years of instructor experience and was teaching a class that had been meticulously rehearsed in preparation for an accreditation visit. I knew the training material well and transferred that knowledge effectively enough for all the students to pass the class. As we wrapped up, I asked the students how they felt about my first big system-level class, and they did not hold back.
“Why was the exam from memory when we don’t work from memory in the plant?” “Why didn’t we refer to the vendor documents?” “Why didn’t we practice more on the mock-up?” And so on.
Wei Bai, Tao Lan, Lei Yang, Chijin Xiao, Hong Li, Wenzhe Mao, Wei You, Hangqi Xu, Tijian Deng, Junfeng Zhu, Bing Luo, Peng Fu, Xiaohui Wen, Haiyang Zhou, Hai Wang, Shude Wan, Adi Liu, Jinlin Xie, Weixing Ding, Wandong Liu
Fusion Science and Technology | Volume 72 | Number 2 | August 2017 | Pages 137-147
Technical Note | doi.org/10.1080/15361055.2017.1291043
Articles are hosted by Taylor and Francis Online.
An equilibrium field (EQ) power supply (PS) circuit using a feedback H-bridge pulse-width-modulation controller has been developed to control the plasma horizontal position and to satisfy the requirement of plasma equilibrium in the Keda Torus eXperiment (KTX) reversed field pinch. Results from simulations of plasma discharge aimed at achieving plasma equilibrium demonstrate the success of the PS circuit design. Additionally, this design provides a feasible control solution for achieving equilibrium conditions in future KTX PS upgrades. The details of the EQ model and simulations of the poloidal field circuit are presented and discussed in this technical note.