ELECTRICAL, Electrical Systems Simulation
3.1.3, July 2015
The ELECTRICAL library, supplied with the professional version of EcosimPro, contains the basic components for building electric and electronic systems.
Using drag & drop methodology, the user can quickly create the wiring diagram to be analysed, the representation of which is very similar to the physical system. The library has a wealth of possibilities, ranging from the simulation of power distribution networks and transformer stations to power electronics and digital electronic elements.
Thanks to EcosimPro’s features, the ELECTRICAL library is very easy to configure and extend, adding any components and characteristics as needed. This can be done graphically through a simple, user friendly interface, or through EcosimPro’s object-orientated language which makes it possible to re-use existing codes.
Applying the object-oriented methodology, a group of components can be encapsulated into a single subsystem used like a black box, with a defined number of inputs and outputs. This enables modular design of the overall system and makes it possible to share tasks among different specialised users or merely simplify the system.
One of the library’s biggest advantages is the possibility of its use in the multidisciplinary facet of EcosimPro, a step forward for specific electrical or electronic simulation software. This means that we can carry out an overall system study, preventing possible interferences between modules and therefore minimising design costs.
In summary, different component groups will be established and included in the ELECTRICAL library with several representative examples:
- Signal generators: The input possibilities cover the classic forms of generation: voltage and direct current supplies — senoidal, trapezoidal. There are voltage, current, voltage-current and current-voltage convertors. There are also two very interesting components, generators of current/voltage signals that track a control signal, which greatly expands the input possibilities
- Passive elements: In addition to the classic elements: inductors, resistance and ideal capacitors, there are other components specialised in electric transmission: Lossy transmission line and uniform distributed RC line, transformers, ducting and shortcircuits
- Active elements: The library contains the main semiconductors: diodes (they take temperature into account), NMOS transistor, PMOS transistor, NPN transistors, thyristors and operational (ideal) amplifiers. By changing their parameters, these elements can be used both as power and electronic components
- Signal handlers: There are ideal circuit breakers and switches
- Sensors: The library can be directly connected to the control library by means of the current, voltage and power sensors. These can be considered as variables to be controlled or as system control parameters
- Power transformation: Finally, a component to transform electrical energy into rotational mechanical energy has been contemplated. It is used as the basic building block for an electric motor
This model represents a diode bridge built as shown below:
For this example an experiment “exp1” has been created which consists in integrating 150 milliseconds with a 10 V 50 Hz alternate voltage generator in which the original generator signal and the signal rectified by the diode bridge can be seen.