Inverter, Rectifier, Chopper (Buck or Boost), Cycloconverter

DC to AC Inverters:

A power inverter, or inverter, is an electronic device or circuit that changes direct current (DC) to alternating current (AC). Inverters convert from DC to single-phase or three-phase AC of variable frequency and variable magnitude.

AC to DC Rectifier:

The circuit that performs the opposite function, converting AC to DC, is called a rectifier. The rectifier converts from single-phase or three-phase AC to variable DC voltage.

DC to DC Converters:

Chopper converts DC to variable DC voltage.

A DC to DC converter takes the voltage from a DC source and converts the supply voltage into another level of DC voltage. They are used to increase or decrease the voltage level. DC to DC converters in electronic circuits use switching technology.

Buck Converter:

A step-down circuit is used to generate a voltage lower than the input dc voltage.

Boost Converter (Boost):

A step-up circuit is used to generate a voltage higher than the dc input voltage.

Buck-Boost Converter

In Buck-Boost converter, the output voltage can be increased or decreased than the input voltage. It works to increase or reduce voltage.

AC to AC Cycloconverter:

A cycloconverter is a device that converts AC power at one frequency into AC power of an adjustable but lower frequency without any direct current or DC stage in between. Cyclic converters convert from single-phase or three-phase AC to single-phase or three-phase AC of variable frequency and variable magnitude.

A cycloconverter has four thyristors divided into a positive and negative bank of two thyristors each.

There are two main types of CCV, circulating current type or blocking mode type; Most high power commercial products are of the locking mode type. Applications of cycloconverters:

Cycloconverters can produce output voltages rich in harmonics. When cycloconverters are used for a running AC machine,

The operation of the CCV creates current and voltage harmonics at the input and output of the CCV. AC line harmonics are created at the CCV input according to the equation,

• fh = f1 (kq±1) ± 6nfo,