The superconducting tokamak HT-7U [1] has been designed by the Institute of Plasma Physics since 1998 and will be set up before 2003. The 1.2 MW /2.45 GHz HT-7U LHCD (Lower hybrid current drive) system which being the...The superconducting tokamak HT-7U [1] has been designed by the Institute of Plasma Physics since 1998 and will be set up before 2003. The 1.2 MW /2.45 GHz HT-7U LHCD (Lower hybrid current drive) system which being the most efficient non-induction device can heat the plasma and drive the plasma current has been efficiently in operation 'owl and a particular design of the 2.8 MW/-35 kV high-voltage DC power supply has been already completed and will apply to the klystron of LHCD on HT-7 and the future HT-7U, and the project of the power supply has been examined and approved professionally by an authorized group of high-level specialist in the institute of Plasma Physics. The detailed design of the power supply and the simulation results are referred in the paper.展开更多
The 6 MW/4.6 GHz lower hybrid current drive （LHCD） system will be set up on the experimental advanced superconducting tokamak （EAST） for achieving a steady-state op- eration. The high power and continuous wave （C...The 6 MW/4.6 GHz lower hybrid current drive （LHCD） system will be set up on the experimental advanced superconducting tokamak （EAST） for achieving a steady-state op- eration. The high power and continuous wave （CW） mode microwave test bench operating at 250 kW/4.6 GHz has already been finished, which can be used to simulate different kinds of high power microwave environments to test microwave components and units for the new LHCD sys- tem. The power control and data acquisition system on the test bench composed of power control, high reflected power protection and data acquisition function is described here in detail. Long- term operation of the test bench showed that the power control and data acquisition system is very stable and reliable.展开更多
A -35 kV/2.8 MW/1000s high-voltage power supply (HVPS) for HT-7 superconducting tokamak has been built successfully. The HVPS is scheduled to run on a 2.45 GHz/1 MW lower hybrid current drive (LHCD) [1] system of HT-7...A -35 kV/2.8 MW/1000s high-voltage power supply (HVPS) for HT-7 superconducting tokamak has been built successfully. The HVPS is scheduled to run on a 2.45 GHz/1 MW lower hybrid current drive (LHCD) [1] system of HT-7 superconducting tokamak before the set-up of HT-7 superconducting tokamak in 2003. The HVPS has a series of advantages such as good steady and dynamic response, logical computer program controlling the HVPS without any fault, operational panel and experimental board for data acquisition, which both are grounded distinctively in a normative way to protect the main body of HVPS along with its attached equipments from dangers. Electric power cables and other control cables are disposed reasonably, to prevent signals from magnetic interference and ensure the precision of signal transfer.This paper involves the experiment and operation of a 35 kV/2.8 MW/1000s HVPS [2] for 2.45 GHz/1 MW LHCD system. The reliability and feasibility of the HVPS has been demonstrated in comparison with experimental results of original design and simulation data.展开更多
为解决风电机组在风电功率平抑和故障穿越2方面的不足,针对基于混合储能的直驱风力发电系统,提出一种同时兼顾风电功率平抑和故障穿越的复合功率控制策略。一方面,提出具有功率误差反馈环的改进型二阶滤波功率分配方法,实时修正超级电...为解决风电机组在风电功率平抑和故障穿越2方面的不足,针对基于混合储能的直驱风力发电系统,提出一种同时兼顾风电功率平抑和故障穿越的复合功率控制策略。一方面,提出具有功率误差反馈环的改进型二阶滤波功率分配方法,实时修正超级电容和蓄电池储能的功率响应指令,提高目标功率分配精度的同时改善跟踪控制效果,实现风电功率平抑的同时延长储能介质使用寿命;另一方面,提出网侧变流器(grid side convertor,GSC)和混合储能共同作用的复合功率控制策略,实时修正各控制量的功率响应指令并快速清除直流母线上的冗余功率,提高风电机组的故障穿越能力,使风电系统基本不受电网故障的影响。展开更多
文摘The superconducting tokamak HT-7U [1] has been designed by the Institute of Plasma Physics since 1998 and will be set up before 2003. The 1.2 MW /2.45 GHz HT-7U LHCD (Lower hybrid current drive) system which being the most efficient non-induction device can heat the plasma and drive the plasma current has been efficiently in operation 'owl and a particular design of the 2.8 MW/-35 kV high-voltage DC power supply has been already completed and will apply to the klystron of LHCD on HT-7 and the future HT-7U, and the project of the power supply has been examined and approved professionally by an authorized group of high-level specialist in the institute of Plasma Physics. The detailed design of the power supply and the simulation results are referred in the paper.
基金supported by National Magnetic Confinement Fusion Science Program of China(No.2010GB105001)
文摘The 6 MW/4.6 GHz lower hybrid current drive （LHCD） system will be set up on the experimental advanced superconducting tokamak （EAST） for achieving a steady-state op- eration. The high power and continuous wave （CW） mode microwave test bench operating at 250 kW/4.6 GHz has already been finished, which can be used to simulate different kinds of high power microwave environments to test microwave components and units for the new LHCD sys- tem. The power control and data acquisition system on the test bench composed of power control, high reflected power protection and data acquisition function is described here in detail. Long- term operation of the test bench showed that the power control and data acquisition system is very stable and reliable.
基金This work was supported by Meg-Science Enginerring Item of the Chinese Academy of Sciences.
文摘A -35 kV/2.8 MW/1000s high-voltage power supply (HVPS) for HT-7 superconducting tokamak has been built successfully. The HVPS is scheduled to run on a 2.45 GHz/1 MW lower hybrid current drive (LHCD) [1] system of HT-7 superconducting tokamak before the set-up of HT-7 superconducting tokamak in 2003. The HVPS has a series of advantages such as good steady and dynamic response, logical computer program controlling the HVPS without any fault, operational panel and experimental board for data acquisition, which both are grounded distinctively in a normative way to protect the main body of HVPS along with its attached equipments from dangers. Electric power cables and other control cables are disposed reasonably, to prevent signals from magnetic interference and ensure the precision of signal transfer.This paper involves the experiment and operation of a 35 kV/2.8 MW/1000s HVPS [2] for 2.45 GHz/1 MW LHCD system. The reliability and feasibility of the HVPS has been demonstrated in comparison with experimental results of original design and simulation data.
文摘为解决风电机组在风电功率平抑和故障穿越2方面的不足,针对基于混合储能的直驱风力发电系统,提出一种同时兼顾风电功率平抑和故障穿越的复合功率控制策略。一方面,提出具有功率误差反馈环的改进型二阶滤波功率分配方法,实时修正超级电容和蓄电池储能的功率响应指令,提高目标功率分配精度的同时改善跟踪控制效果,实现风电功率平抑的同时延长储能介质使用寿命;另一方面,提出网侧变流器(grid side convertor,GSC)和混合储能共同作用的复合功率控制策略,实时修正各控制量的功率响应指令并快速清除直流母线上的冗余功率,提高风电机组的故障穿越能力,使风电系统基本不受电网故障的影响。
