The IGCT is a gate-controlled turn-off switch which turns off like a transistor but conducts like a thyristor with the lowest conduction losses. Figure 1 shows turn- off. Basic design rules and handling / application recommendations for IGCT Gate Units .. The connector X1 is specified in the corresponding IGCT data sheet. mm. Height h. ± mm. 41 mm. Width IGCT w. ± mm. mm. 1) Maximum rated values indicate limits beyond which damage to the device may occur.
|Published (Last):||8 November 2005|
|PDF File Size:||2.52 Mb|
|ePub File Size:||13.29 Mb|
|Price:||Free* [*Free Regsitration Required]|
However, the introduction of advanced electronics and pulsed-energy systems on a surface ship is not without consequences. A generalized process for designing electric warships proposed by Doerry  consists of the following steps:. Control volume with only conservation of energy employed across the boundaries Explicit and transient in time and with a lumped element spatial representation; spatial gradients cannot be resolved Thermal physical properties are temperature dependent with an option to remove this dependency Heat transfer by conduction and radiation are neglected The model uses two thermal nature ports and is represented schematically by a cooling fin.
The notional ship is a nominal MW, 10, ton displacement surface combatant, using data compiled from open source documentation. As a result of the research, investigations can now be performed for studying the experimental power system setup of Purdue University to support the research for All-electric ship.
Please try again later or go to https: The second reason for the creation of highly simplified model is for the sake of computational speed, so that system simulations based on the component models will run at speeds compatible with the needs of exploring the system behavior under a large variety of conditions. It is intended to highlight the approach, benefits and initial outcomes with respect to research approaches.
VTB-Matlab interface uses and requires a registered copy of Matlab to be loaded onto the host computer. It can be omitted at the price of a somewhat reduced turn-off current capability.
The output of the regulator is a commanded inductor current that is used for hysteresis-based switch-level control. The primary challenge is that legacy software typically must be rewritten to operate with best efficiency on such systems. However, this steady-state value does not include the integrated effects of dynamic power buildup and adaptive grid response following the introduction of high-energy weapons and sensors.
Finally, the reader should be aware that a follow-on report will be delivered in the January time frame. The technical objectives included demonstration of the IMU design concept and impedance measurement capabilities within both AC- and DC-systems. To make the capability available to as wide an audience as possible, the initial development will be made available to all users under Navy-sponsored programs.
ESRDC | Electric Ship Research and Development Consortium)
In order to quantify the availability of distributed energy datasehet embedded in the ship power systems to the mission loads this datadheet will develop a probabilistic approach to allow objective comparisons between centralized energy storage allocations and mission load centric energy storage to support dynamic mission load profiles. Guided by modeling and simulation efforts in the related ESRDC Impedance-based Controls task, commissioning and test plans were established. Ogct, this effort was focused on simplified models to serve the needs of interactive early stage design.
The model for the electrical part is shown in figure 3. Convection Heat Transfer Model: So, the Department of Defense, as well as companies needing a competitive advantage, must find other solutions. In the AES concept, prime movers are connected directly to generators, from which electrical power is sent to propulsors via motor drivesand also to other ship systems.
datashest The systems delineated in this document are a single, baseline reference ship. In the majority of power stations synchronous machines operate as generators and their design depends on the rotational speed required. The individual modules implemented for model will allow the user to comprehensively test different methods of fault detection algorithms while providing useful insight into behavior of different modules. This approach allows the modeling of power system components such as cables, bus bars, machines, power electronic converters and the ship hull based on generated or measured S-parameters for the development of simulation models.
Integrated gate-commutated thyristors (IGCT)
Integrated gate-commutated thyristors IGCT. Currently, the Arleigh Burke DDG class destroyer employs five ton marine chiller units to handle active cooling of ship systems and components. The third simplification that has been made is that many components are represented in the abstract based on the operation goals of the component rather than on the details of what might physically be present.
The synchronous machine and excitation system is illustrated in Figure 1. Secondly, reduced-order models are typically used. The datassheet set forth include: As the push for advanced shipboard power systems leads to incorporation of power-electronics based converter systems, system daasheet concepts datashert preserve stability has become a major research thrust.
This model represents a multiphase lossy transmission line. For instance, Temperature0 is the temperature of port 0. In general the number of slots is large for distributed windings typically 6 per phase.
Only electrical characteristics have been considered in this document. This is a research environment involving naval officers and the system is helping them improve the quality of daatasheet education during their limited time at NPS.
To summarise, the contents of this preliminary report are: Within this context, this work focused on two distinct aspects. In addition, the toolset can be utilized with IMUs in order to create nonlinear models by extracting the terminal behavior of devices.
The goal of the group is to arrive at a common SPS model with its characteristics defined such that implementation of the SPS model in various simulation platforms can be mapped, verified and validated. A widely accessible accelerated simulation approach provides key Navy users with early capability to use emerging software approaches to modeling.
The ESRDC solution has been developed over time to match the needs of the Navy and the shipbuilding community while also being sensitive to the relevant commercial development.
The model represents an ideal CCCS with gain factor. Today, however, it is not possible to conduct the required simulations of large shipboard models due to the length of time required to complete the solution when using commercial software and desktop computers. When natural coupled layer 1 this model functions as a voltage pressure, speed, ect.
A diagram of the voltage control loop is shown in Figure 3.