ual8658 said:We are trying to build a wind turbine which will charge a battery. Since wind speed varies (which affects the generated current and voltage), we were going to integrate a transformer in. My question is does such a transfomer even exist where the input voltage varies while the output voltage is preset by us?
ual8658 said:which will charge a battery.
You don't really need the wind generator to deliver a steady voltage for battery charging. An integrated circuit chip can provide an efficient way to convert a varying DC to a fixed-level DC, for charging a battery.ual8658 said:a wind turbine which will charge a battery. Since wind speed varies
the term you're after is buck-boost charge controllerual8658 said:My question is does such a transfomer even exist where the input voltage varies while the output voltage is preset by us?
jim hardy said:the term you're after is buck-boost charge controller
http://maxwellsci.com/print/rjaset/v6-825-834.pdf
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.525.7743&rep=rep1&type=pdf
NascentOxygen said:You don't really need the wind generator to deliver a steady voltage for battery charging. An integrated circuit chip can provide an efficient way to convert a varying DC to a fixed-level DC, for charging a battery.
I am confident there would exist a special-purpose chip for charging your cells. What chemistry cells are you planning to use?
Henryk said:Have you consider using a car alternator to charge a battery? They do come with controllers that regulate the voltage and current output.
A variable voltage transformer, also known as a variable autotransformer, is a device that can be used to adjust the output voltage of an electrical circuit. It consists of a single winding with a moveable tap that allows for a range of output voltages to be selected.
A variable voltage transformer works by utilizing the principle of mutual induction, where a changing electric current in one coil creates a changing magnetic field that induces a voltage in another coil. The moveable tap allows for different amounts of the coil to be used, resulting in different output voltages.
A variable voltage transformer has several benefits, including the ability to adjust output voltage without the need for multiple transformers, increased flexibility in controlling power to devices, and the ability to step up or step down voltages as needed.
A regular transformer has two separate coils, whereas a variable voltage transformer has only one coil with a moveable tap. This allows for a greater range of output voltages to be selected. Additionally, a regular transformer has a fixed output voltage, while a variable voltage transformer allows for the output voltage to be adjusted.
Variable voltage transformers are commonly used in laboratory and industrial settings for controlling power to equipment and instruments. They are also used in electronic devices such as audio amplifiers and voltage regulators. They can also be used in household appliances to adjust voltage for different regions or countries.