Deepakkumar Yadav
Single Phase Cycloconverter Q. What is cycloconverter ? Explain cycloconverter with neat circuit diagram. This is a single phase converter whose input and output are single phase ac. The input supply voltage at supply frequency (50 Hz) is converted into lower frequency ac output. There are two configurations of single phase cycloconverter : Centre tapped … Read more
Comparison of Circulating Current and Non-circulating Current Modes Sr. No With circulating Current Without circulating Current 1. Reactors are required to limit the circulating current. These reactors may be costly and bulky and consume lot of power. Reactors are not required for normal operation but sometimes may have to be used to make the load … Read more
Dual Converter with Circulating Current In this scheme both the converters are turned on simultaneously, the firing angles are adjusted by the control voltage VC in such a way that (α1 + α2) = 180°. The average voltage produced by both the converters will be same, but the instantaneous values will be different therefore circulating current will … Read more
Practical Dual Converter Q. Dual Converter Q. What is the use of dual converter? Q. What is dual convertor? Q. Single phase Dual converter If the firing angles of the two converters we controlled such that α1 + α2 = 180o 2and both the converters same average terminal voltage, which will be equal to operate simultaneously, then they will … Read more
Single Phase Dual Converter Circuit Diagram of Single Phase Dual Converter : The circuit diagram of a single phase dual converter is as shown in Figure A. As seen from the Figure A there are two single phase line commutated full converters connected back to back to drive a common load. The load in this case … Read more
Ideal Dual Converter Q. What is ideal dual converter? Q. What is the essential condition for dual converter? An ideal dual converter consists of two ideal full converters. The ideal full converters are the ones which produce a pure ripple tree dc voltage at the outputs. Block Diagram of Ideal Dual Converter : The block diagram for … Read more
Four Quadrant Operation of Dual Converter Q. Dual Converter Q. Which converter is suitable for four quadrant operation? Q. What is meant by four quadrant operation? Q. How does a dual converter work? Q. Working Procedure of Dual Converter The first full converter is capable of operating in two quadrants depending on the value of firing angle α. For the … Read more
Static Electrification in Power Transformer Transformer represent a significant asset in any power system network. The power transformer are crucial elements of the network. There are two critical phenomenon which affect reliability of power transformers -Static electrification and geometrically induced currents. There are number of transformer failures associated with these phenomenon. The force cooled power … Read more
Dual Converters Q. What is a dual converter? Q. Why a dual converter is called so? Q. Introduction of Single Phase Dual Converter Q. Block Diagram of Dual Converters Definition of Dual Converters : When two full converters (single phase or three phase) are connected back to back the configuration is known as dual converter configuration. Block Diagram of Dual … Read more
Three Phase Series Inverter Circuit Diagram of Three Phase Series Inverter : A three phase series inverter can be obtained by connecting three separate single phase inverters together as shown in Figure A. If capacitors C1 and C2are large enough then each phase will function as an independent series inverter. The values of the L, C and R … Read more