How is transient analysis used in electronic engineering?

It is the heart of Electro Magnetic Compatibility over a broad range of frequencies and amplitudes. Add the high energies of lightning induced effects and you are almost ready on the path of a compliant product.

Transient analysis is the only simulation type that takes into account non linearity and causality. It ultimately checks that design is operating as expected with a reasonable level of confidence. To keep in mind: Only effects that are present in models can be simulated... Only parasitic elements that are explicitely added are taken into account Another point is that normal SPICE transient analysis does not take noise into account. Here, noise is to be understood as random variations of voltages and currents in devices, not parasitic coupling from a large signal section to a small signal section. This one can be simulated provided the fact coupling effects are included. Some simulators offer transient noise analysis.

You need to understand the electrical risks that can affect your equipment and the how-to add protections in different layers: Distribution, local panels, subpanels and devices. All these layers include critical components that need to be protected. Transient analysis gives you the information to identify these risks and make your system in general more reliable minimizing downtime.

For a product to meet the requirements to access the market and having a product which is robust enough to work as intended in the given environment as well as generating disturbances below a limit, not disturbing other equipment. From the day of introducing the equipment on the market to the day of end of life. Even in the area of safety for equipment and living beings.

Según mi experiencia, la importancia del análisis transitorio está basada en el conocimiento de las relaciones voltaje-corriente de los tres principales elementos de dos terminales de la electrónica: resistor, capacitor e inductor. Estas relaciones muestran las primeras aproximaciones sobre los fenómenos de carga y descarga en los dispositivos capacitivos e inductivos. Matemáticamente, es la incorporación de expresiones con derivadas e integrales. Esto representa una visión posterior con respecto a la concepción previa del capacitor y del inductor como circuito abierto y corto circuito

One way is the execution of analitical models and simulations, but the results are according the quality of the models. Especially within the area of Electro Magnetic Compatibility. Verification and Validation of the used methods and models is crucial for a reliable result. In the end is some physical testing unavoidable at this moment of time due to the complexity and computational limitations needed. The use of EMC standards help to address such issues and can be used for guidance and execution of the mentioned analysis of transients occurring due to intended and unintended physical effects.

Con las relaciones matemáticas entre voltaje-corriente de cada elemento de circuito, se lleva a cabo la formulación de las ecuaciones de equilibrio usando las leyes de Kirchhoff. Finalmente, se despeja la variable de interés.

Another type of tools is not mentioned here: Behavioral simulators such as Simulink, XCOS, Octave etc... These can be used mainly as transient simulators and are more efficient than SPICE and the like as they do not have to solve implicit equations. They can be used efficiently during the specification phase and during the verification phase. They can even help debugging by quickly exploring assumptions about what could be wrong

Example of components which are critical factors in transient analysis are frequency dependant components such as capacitor, inductors and resistors. Sometimes their effectiveness are function of life span I.e. ageing. Every component has life span under which their efficiency is very high and accurate but with time this efficiencies begin to decline and deviate from efficiency linearity when plot graph of efficiency with age...... Therefore most manufacturers give room for tolerance of +or - in components accuracy. Ageing is a factor to consider when looking at transient analysis of circuits at component level.

Es importante tomar en cuenta que este tipo de análisis procura mostrar los fenómenos de carga y descarga de las variables voltaje y corriente en los elementos capacitivos e inductivos. Por lo tanto, observaremos funciones que descienden y ascienden hacia valores límite gobernados por los principios eléctricos. Esto sucede cada vez que abrimos y/o cerramos en diferentes instantes de tiempo interruptores ubicados en el circuito eléctrico. Posteriormente, en otros temas comprenderemos que esos interruptores pueden estar relacionados con elementos activos como el transistor.