Title :
Study on the Collaborative Triggering of Multiple STRETCH Meat Grinder With ICCOS Modules
Author :
Xinjie Yu ; Hui Liu ; Jun Li ; Zhen Li ; Peizhu Liu
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
The energy density of the inductive energy storage systems is one order of magnitude higher than that of the capacitive ones. The slow transfer of energy through capacitive hybrid (STRETCH) meat grinder with inverse current commutation with semiconductor (ICCOS) devices put forward by Tsinghua University is a typical inductive pulsed-power supply for electromagnetic launch system, which has remarkable current amplification ability as a single module. However, one module cannot provide enough amplitude and width for the load current of the railgun launching. Therefore, the collaborative work of multiple inductive source modules is necessary for practical usage. In this paper, the designed inductive power supply system of about 1 MJ is composed of 40 STRETCH meat grinders with ICCOS modules. All the main switches are opened simultaneously to reduce the magnetic field coupling among the modules and make the current rising edge steep. The modules are divided into several groups. The triggering delays of the thyristors between every two adjacent groups are carefully designed. After the first triggers for all the modules, the energy stored in the capacitors can be further utilized with the second triggers. The numerical simulation results show that the appropriate collaborative triggering delay can increase the adjustability of the output current width and the second triggers can further increase the current width and the system efficiency. Therefore, the load current with flat shape, appropriate amplitude, and longer duration can be provided with modular design and collaborate triggering discharge of the multiple modules. This can provide a theoretical foundation for the future study and implementation.
Keywords :
electromagnetic launchers; energy storage; food technology; inductive power transmission; numerical analysis; thyristors; ICCOS modules; Tsinghua University; collaborative triggering; electromagnetic launch system; energy density; inductive energy storage systems; inductive power supply system; inductive pulsed-power supply; inverse current commutation with semiconductor; magnetic field coupling; multiple STRETCH meat grinder; numerical simulation; slow transfer of energy through capacitive hybrid; thyristors; Capacitors; Collaboration; Electrical engineering; Energy storage; Inductors; Thyristors; Topology; Collaborative triggering; inductive pulsed-power supplies; modular design; slow transfer of energy through capacitive hybrid (STRETCH) meat grinder with inverse current commutation with semiconductor (ICCOS) devices; slow transfer of energy through capacitive hybrid (STRETCH) meat grinder with inverse current commutation with semiconductor (ICCOS) devices.;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2015.2409979