Multipe NSSS (Nuclear Steam Supply System) modules use the common feeding-water system to drive the common turbine power generation set. The SSFFN (secondary side fluid flow network) of MHTGR plant has features i.e. s...Multipe NSSS (Nuclear Steam Supply System) modules use the common feeding-water system to drive the common turbine power generation set. The SSFFN (secondary side fluid flow network) of MHTGR plant has features i.e. strong-coupling and nonlinearity. A wide range of power switching operation will cause unsteady flow, which may destroy the working elements and will be a threat for normal operation. To overcome those problems, a differential-algebraic model and PI controllers are designed for the SSFFN. In MATLAB\SIMULINK environment, a simulation platform is established and used to make a simulation of SSFFN of a MHTGR plant with two NSSS modules, which uses feedwater valves to control the mass flow rate in each module instead of feedwater pump. Results reflect good robustness of controllers.展开更多
Let K be a field of characteristic zero and M 3(K)the ring of matrices 3×3 over K.In this paper,we establish first the certain identities of traces of some algebras of Min3(K),then we define the trace mapping of ...Let K be a field of characteristic zero and M 3(K)the ring of matrices 3×3 over K.In this paper,we establish first the certain identities of traces of some algebras of Min3(K),then we define the trace mapping of 3×3 matrices associated with a substitution over a two-letter alphabet on some algebraic variety and study their properties.展开更多
文摘Multipe NSSS (Nuclear Steam Supply System) modules use the common feeding-water system to drive the common turbine power generation set. The SSFFN (secondary side fluid flow network) of MHTGR plant has features i.e. strong-coupling and nonlinearity. A wide range of power switching operation will cause unsteady flow, which may destroy the working elements and will be a threat for normal operation. To overcome those problems, a differential-algebraic model and PI controllers are designed for the SSFFN. In MATLAB\SIMULINK environment, a simulation platform is established and used to make a simulation of SSFFN of a MHTGR plant with two NSSS modules, which uses feedwater valves to control the mass flow rate in each module instead of feedwater pump. Results reflect good robustness of controllers.
基金This work was supported by the Special Funds for Major State Basic Research Projects of China.
文摘Let K be a field of characteristic zero and M 3(K)the ring of matrices 3×3 over K.In this paper,we establish first the certain identities of traces of some algebras of Min3(K),then we define the trace mapping of 3×3 matrices associated with a substitution over a two-letter alphabet on some algebraic variety and study their properties.
