Tuesday, 5 November 2013

Final Year Project 1 Week 7 & 8

At week 7 & 8, continue research. The research is about circuit inverter and dc booster that will be used in this project.




DC to AC power converter (Inverter)
Since this project target output is able to produce Ac, so it need to be converted from dc to ac. Power inverter, or inverter, is an electrical power converter that changes direct current (DC) to alternating current (AC). The converted AC can be at any required voltage and frequency with the use of appropriate transformers, switching, and control circuits. Inverters are commonly used to supply AC power from DC sources such as solar panels or batteries. Inverter is use in this project because the output of an alternator is DC source and need to be converted to Ac source.


DC Booster
 
DC-to-DC power converter is use in this project since the output of an alternator depends on the vehicle passes on the ramp, so the value output might be is smaller. By using with an output voltage greater than its input voltage means that the input voltage can be boost. DC-to-DC power converter It is a class of switched-mode power supply (SMPS) containing at least two semiconductor switches (a diode and a transistor) and at least one energy storage element, a capacitor, inductor, or the two in combination. Filters made of capacitors (sometimes in combination with inductors) are normally added to the output of the converter to reduce output voltage ripple. Power for the boost converter can come from any suitable DC sources, such as batteries, solar panels, rectifiers and DC generators. A process that changes one DC voltage to a different DC voltage is called DC to DC conversion. A boost converter is sometimes called a step-up converter since it “steps up” the source voltage. Since power (P=IV) must be conserved, the output current is lower than the source current.






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