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Chopper Fed DC Drives

Chopper Fed DC Drives: The variable voltage to the armature of a dc motor for speed control can be obtained from a dc chopper which is a single stage dc…

Field Oriented Control of Induction Motor

Field Oriented Control of Induction Motor: In the slip controlled drives using VSI or CSI discussed in the foregoing sections, the stator voltage or stator current is controlled using slip…

Current Source Inverter Fed Induction Motor Drive

Current Source Inverter Fed Induction Motor Drive: Current Source Inverter Fed Induction Motor Drive - In a voltage source inverter fed induction motor the applied voltage to the stator is…

Square Wave Voltage Source Inverter Fed Induction Motor Drive

Square Wave Voltage Source Inverter Fed Induction Motor Drive: Square Wave Voltage Source Inverter Fed Induction Motor Drive is a kind of dc link converter, which is a two stage…

3 Phase Induction Motor Construction

3 Phase Induction Motor Construction: A converter fed 3 Phase Induction Motor Construction has the following advantages over a line fed motor: 1.Smooth start up is guaranteed by variable frequency…

Voltage Control Techniques for Inverters

Voltage Control Techniques for Inverters: It has already been mentioned that Inverter Control providing a variable frequency supply to three phase motors should be capable of providing a variable voltage.…

Static Relays Articles

Static Relays Articles: Characteristic Functions of Protection Relay Generator Transformer Protection Influence of Static Protective Relays Level Detector Overcurrent Relay Polarised Relay Static Relay Time Delay Circuit Transistor Switch Circuit…

Power System Protection and Switchgear Articles

Power System Protection and Switchgear Articles: This Power System Protection and Switchgear Articles which includes the following topics: Basic Ideas of Protection Relay Fault Meaning Zone Protection Essential Qualities of…