Electrical Circuit Analysis in Electrical Engineering
The electrical circuit analysis is a set of techniques used for quantitative analysis of a circuit.
Purpose of Circuit Analysis:
The circuit analysis helps the engineers to find out the behavior of each element in the circuit. It analyzes the circuit before physically connecting it. Using pen and paper for electrical circuit drawing and calculation. This can save a lot of money and avoid a hazardous situation like a short circuit and component loss.
Elements of Circuit:
In electrical engineering, an electrical circuit is a closed loop that can pass the current from source to load. A circuit may have at least one or more than one load that absorbs power. Load elements of the circuit are passive elements. Where active elements provide power to the passive components.
Types of Analysis:
Circuit analyses are transient analysis and steady-state analysis. In the case of transient circuit analysts, the circuit is analyzed at the time of powering the circuit. In steady-state circuit analysis, the power source is considered Direct Current (DC).
Power Factor (PF) play an important role in average power dissipation in an ac circuit. PF leads to the concept of three different real, reactive and apparent power, which is better explained by Power triangle.
In contrast to a practical voltage source, an imaginary deal source provide constant voltage regardless of load current because of no internal resistance. While ideal current source provides a constant current regardless of load current.
Star Delta Transformations and Delta Star Transformations allow us to convert resistances or impedances connected together at three different nodes from one type of connection to another and vice versa.
Maximum Power Transfer Theorem state that maximum power will transfer from source to load if and only if the load resistance is equal to source internal resistance. The theorem is purely about the transfer of power not efficiency.
According to Thevenin Theorem, a complex circuit is reduced to two resistor network, Thevenin Resistor, and Load resistor and a Thevenin Voltage source to avoid redundant computation to analyze a frequent changing resistor.