Types Of Power Electronic Converters, Applications Of Power Converters

April 29, 2021February 21, 2022 Aditya Singu

Hello guys, welcome back to my blog. In this article, I will discuss the types of power electronic converters, applications of power electronic converters, types of components used to design, etc.

If you have any doubts related to electrical, electronics, and computer science, then ask question. You can also catch me @ Instagram – Chetan Shidling.

Also, read:

Types Of Power Electronic Converters

Power electronic converter is that which controls and converts the power by utilizing of power electronics whose range is high as compared to normal electronics.

Different types of power electronic converter:-

AC to DC conversion (Rectification)
DC to DC conversion
DC to AC conversion (Inversion)
AC to AC conversion

AC to DC conversion (Rectification):-

The AC to DC converters are converted by using of the POWER DIODE , IGBT (INSULATED GATE BIPOLAR TRANSISTOR) , SCR (SILICON CONTROLLED RECTIFIER) and the input of the converter equipment is ac and the output of the converter equipment is dc.

Based on Supply voltage type, Rectifiers can be classified as

Single phase Rectifiers.
Three phase Rectifiers.

Based on controllability, Rectifiers can be classified as

Uncontrolled Rectifiers (Diode rectifiers)
Fully controlled Rectifiers (SCR / other controllable switches-based rectifiers)
Semi Controlled or Half Controlled Rectifiers (Combination of diodes and SCRs)

Applications

Mobile Chargers
DC Drives
Front end rectifiers
UPS system
Battery Charging

DC to DC conversion:-

The DC to DC converters are converted by using of chopper the devices used for converting are POWER MOSFET,POWER BJT, SCR, IGBT Choppers are the switching converters which convert the unregulated dc input voltage into regulated controlled dc output at a desired voltage with the little power loss.

According to input /output voltage levels:

Buck converter :- output voltage is less than the input voltage
Boost converter :- output voltage is greater than the input voltage
Buck Boost converter :- output voltage is less than as well as greater than the input voltage

Applications:

Dc drives
SMPS
Battery driven vehicles
Led lightning
Induction heating

DC to AC conversion (INVERTER):-

The dc to ac is converted by using the inverters, the devices used for converting are IGBT,POWER MOSFET, SCR, GTOSCR, POWER BJT Inverter converts dc power into ac power at a desired output voltage and frequency.

According to type of source:

Voltage source inverter(vsi)
Current source inverter (csi)

According to circuit arrangement:

Bridge inverter (half and full bridge )
Parallel inverter
Series inverter

According to output voltage:

Single phase inverter
Three phase inverter

Applications:

Ac drives
Electric vehicles
Solar and wind energy systems
Ups systems
HVDC transmission

AC to AC conversion:-

The ac to ac converters are converted by using the cyclo-converter and ac voltage controller the devices used for converting are SCR, TRIAC.

Cyclo-converter: A device which converts input power at one frequency to output power at another frequency with one-stage conversion is called a cyclo-converter. A cycloconverter is thus a one-stage frequency changer.

Based on supply type cyclo-converters are of two types,

(i). Single phase cyclo-converters.
(ii). Three phase cyclo-converters.

Based on output frequency cyclo-converters are of two types,

(i). Step-down cyclo-converters (i.e., fo less than fs).
(ii). Step-up cyclo-converters (i.e., fo more than fs).

A cyclo-converter can be classified based on circuit configuration as follows,

(i). Mid-point cyclo-converters.
(ii). Bridge type cyclo-converters.

The applications of cyclo-converters are as follows,

(i). Speed control of high-power ac drives.
(ii). Static VAR Compensation.
(iii). Aircraft or shipboard applications.

Ac voltage controller:-

The AC voltage controller is a solid-state converter which converts a constant AC voltage into a variable AC voltage at constant frequency. This converter is also known as AC voltage regulators.

AC voltage controllers are popularly used in,