 # Electrical Engineering Laboratory

GALSEN-BEE LAB
GALSEN-DRIVES LAB
GALSEN-MACHINES LAB
GALSEN-POWER SYSTEM PROTECTION LAB
GALSEN-RES LAB
SCHNEIDER LAB
SEW Drives Lab
GALSEN-BEE LAB  This is a foundation in electrical engineering course where the students will learn about the measerment various electrical quanties e.g. Resistance,Inductance,Capacitance,Power,Powerfactors.Also students will study current,voltage,energy,frequency and their application in industries and power sector.

Basic Experiments :

• Electric DC circuits (Measurement of resistance, current, voltage and electric power; Series connection of resistors; Shunt connection of resistors; Combined connection of resistors; Readout of voltampere characteristics of nonlinear elements) • Electric circuits of single-phase sinusoidal current (Series connection of R, L and C; Shunt connection of L and C) • Electric circuits of three-phase sinusoidal current (Star load connection; Triangle load connection; Faults in three phase circuits) TM MODEL: GALSEN ECOE1-N-R • Magnetic circuits (Experimental study and calculation of the magnetic circuit with DC; Experimental study of the magnetic circuit with AC; Testing single phase transformers) • Fundamentals of electronics (Study of diode; Study of bipolar transistor; Study of single-phase rectifiers; Study of three phase bridge rectifier; Study of controlled rectifiers and thyristor regulators; Study of bipolar transistor work in key mode; Study of two stage transistor amplifier; Study of DC voltage stabilizers; Study of RS trigger, multivibrator and single- shot trigger; Study of circuits with operational amplifiers)

GALSEN-DRIVES LAB This course has a wide applications in industries. It has been designed to inculcate different speed control methods of various machine. In this lab students would be able to know which speed control scheme would be the most suitable for particular operation .

Basic Experiments:

• Mechanics of drives (Determination of inertia moment of electric drive by method of free run-out. Determination of mechanical characteristic of working mechanism. Drive speed as function of time during transient) • Electric drive using DC motor with separate (parallel, series) excitation (Determination of electromechanical and mechanical characteristics of electric drive in motor, generator, and braking modes. Speed control by changing resistance in armature circuit of DC motor. Speed control by changing excitation current of DC motor. Speed control by shunting field winding of DC motor with series excitation. Speed control by changing armature voltage DC motor. Armature current and speed as function of time during transient. Definition of energy parameters of electric drive with DC motor. Measuring body temperature of DC motor) • Electric drive using squirrel-cage induction motor (Electromechanical and mechanical characteristics of electric drive with induction motor in motor, generator, and braking modes. Speed control by match changing frequency and magnitude of stator voltage. Stator current and speed as function of time during transient. Definition of energy parameters of electric drive with induction motor. Measurement of body temperature of induction motor) • Electric drive using wound-rotor induction motor (Electromechanical and mechanical characteristics of electric drive with induction motor in motor, generator, and braking modes. Speed control by match changing frequency and magnitude of stator voltage. Stator current and speed as function of time during transient. • Electric drive using synchronous motor (Electromechanical and mechanical characteristics of electric drive with synchronous motor. Static angle characteristic. Static Vcurve characteristic. Reactive power control by changing excitation current. Stator current and speed as function of time during transient. Definition of energy parameters of electric drive with synchronous motor. • Open-loop control of electric drives (DC drive startup control in function of time (speed, EMF, armature current) and dynamic braking in function of time (speed, EMF). Induction squirrel-cage motor control during direct-on-line startup, reverse and dynamic braking in function of time (plugging). • Closed-loop control of electric drives (“Thyristor converter - DC motor”. Control characteristics. Current control contour adjustment. Limiter adjustment. Speed control

GALSEN-MACHINES LAB Electrical machine course is one of the important courses of the electrical discipline. In this lab different types of DC machine ,single phase AC machine ,T/F, Alternator, Synchronous machine which are widely used in industries are covered and their performance aspects will be studied.

Basic Experiments:

• Single-phase transformer (Transformation ratio of single-phase transformer. Idling characteristics. Short-circuit characteristics. Characteristic U = f (I) of single-phase transformer with resistive load. Operational characteristics of single-phase transformer with a resistive load. Determination of equalizing current caused by inequality of transformation ratios of parallel singlephase transformers. Effect caused by the inequality of short-circuit voltages of singlephase transformers operating in parallel) • Single-phase autotransformer (Transformation ratio of single-phase autotransformer. Short-circuit characteristics. Characteristic U = f (I) of single-phase during resistive load) • Three-phase transformer (Idling characteristics. Short-circuit characteristics. Checking vector grouping of three-phase transformer. Confirmation of impossibility of parallel operation of three-phase transformers with different vector grouping) • DC generators with separate / shunt excitation (Idling characteristics of DC generator with separate excitation. Short-circuit characteristics of DC generator with separate excitation. Characteristics U = f (I), If = f (I) and U = f (I ) of DC generator with separate excitation. Characteristic U = f (I) of DC generator with shunt excitation) • DC motors with separate/ parallel / series excitation (Electromechanical (speed)characteristics. Mechanical characteristics. Operational characteristics. Speed control of DC motor by armature voltage changing. Speed control of a DC motor by changing additional resistance in the armature circuit. Speed control of a DC motor by field current change. Speed control motor with series excitation by shunting field winding) • Three-phase squirrel-cage induction motor (Idling characteristics. Short-circuit characteristics. Electromechanical (speed) characteristic. Mechanical characteristic. Operational characteristics. Speed control of three-phase squirrel-cage induction motor by stator voltage changing) • Three-phase wound-rotor induction motor (Electromechanical (speed) characteristic. Mechanical characteristic. Operational characteristics. Speed control of three-phase wound-rotor induction motor by active rotor resistance changing) • Three-phase synchronous generator (Idling characteristic. Short-circuit characteristic.

GALSEN-POWER SYSTEM PROTECTION LAB This subject facilitates to apply general safety measures to be followed in handling different electrical machines and measuring devices, interpretation of data from measuring devices and correlation with the theories and parameter of machines .

Basic Experiments :

Relay protection (Transmission line highest overcurrent protection. Transmission line instant current cutoff. High-set overcurrent protection of radial electrical network with single supply. Transmission line differential protection. Transformer differential protection. Transmission line circuit breaker high-set overcurrent protection. Thermal electrical relay thermal protection of electrical network) TM MODEL: GALSEN RZASESR1-N-R Automation (Automatic activation of backup of electrical load supply. Transmission line autoreclosing)

GALSEN-RES LAB Renewable Energy System lab provides introduction to different renewable energy sources. It also explores the use of solar and wind energy. At the end of the course the student expected to undertstand an analyse its utilization , economics and envirmental merits .

Basic Experiments:

Synchronous generator with permanent magnet (Finding no-load characteristic E=f(n). Finding external characteristics U=f(I), Р =f(I). Finding speed characteristics U=f(n), I=f(n) и Р =f(n) at constant load resistance) Wind-electrical synchronous generator (Finding dependences of generator power and wind turbine rotational moment from speed Р=f(n) and М=f(n) at constant wind speed. Finding dependence of turbine speed from wind speed n=f(v) at constant generator load. Finding dependence of generator power from wind speed Р=f(v) at constant turbine speed. Finding dependence of turbine speed from wind speed n=f(v) at max value of generator power. Finding dependence of max value of generator power from blade s number of wind turbine Р=f(m)   