Skip to main content

Featured Post

Induction Motor Interview Questions with Answers | Part-1

4 comments

Electric Drives

What is the function of Electric Drives? And all the information of Electric drive is given below



Definition

  • A device which is used to motion control is called drive.
  • An electrical machine which used for motion control is called electric drive.
  • Block Diagram of Electrical Drives

 1. Source

  • Source are used in electrical drives 
  • AC supply
  • DC supply 

 2. Power modulator

  • Power modulator perform two functions
  • It take the electrical supply from the source and give it to the motor in suitable form of motor.
  • Power modulator select the mode of operation of motor, such that motoring or braking mode.

3. Load


  • It is the machinery or device which used to perform particular or given operation.

4. Motors


  • There are several motors are used in electrical drives such that DC series motor, DC Shunt motor, DC compound motor, DC permanent magnet motor, Induction motors, Synchronous motors, stepper motor.

 5. Sensing unit

  • Sensing unit sense the drive parameters like as speed of motor, current of motor etc.
  • Sensing unit is used to protection for motor. Then, these information is fed to the control unit.

 6. Control unit

  • It controls the power modulator using generating commands according to motor safety and power modulator safety.
  • It operate at lower voltage and lower power levels.

Advantages of electric drive


  • Electric drive is more flexible. It can be install where space is available and also we can change the place.
  • Electric drive is clean as compared to steam or diesel engine drives.
  • Electric drive needs less  space because it arranged nearer to the driven machine.
  • We can control the electric drive by remote control.
  • We can easily start the motor with starter only by pressing the button. It is easy to start as compared to steam or diesel engine drives.
  • Automatic control is possible in electric drive by using electronic control.

Disadvantages of electric drive


  • This system is possible only in electrified area.
  • If any fault occurs in supply whole system comes to stand still.
 



Labels:

Comments

Post a Comment

Popular posts from this blog

Introduction to Arduino | Pin Function of Arduino | Working Process of Arduino

Introduction to Arduino | Pin Function of Arduino | Working Process of Arduino Introduction to Arduino | Pin Function of Arduino | Working Process of Arduino Introduction To Arduino Arduino is an Italian company that designs and manufactures Open Source Hardware (Microcontroller) and Open Source software or IDE (Integrated Development Environment). Arduino hardware is such a programmable computerized platform, by working on which the user can combine the hardware and software and prepare the electronic brain according to his own and can control the electronic devices from that electronic brain. What is arduino? If you want to understand more easily, then we can say that Arduino microcontroller is an empty brain, in which you can upload memory by coding or programming through arduino software, so these are called open source. Arduino works like a CPU of a board computer. Right now the microcontroller of the arduino of this time that we can take up is lik
Post a Comment
Read more

Variable Inductance Transducer | Classification Of Variable Inductance Transducer

Variable Inductance Transducer | Classification Of Variable Inductance Transducer Variable Inductance Transducer | Classification Of Variable Inductance Transducer These are based on a change in the magnetic characteristic of an electrical circuit in response to a measurand which may be displacement, velocity, acceleration etc. Variable inductive transducer may be classified as follows: 1.Self-generating type In this type voltage is generated because of the relative motion between a conductor and a magnetic field. These may be further classified as follows: (A)Electromagnetic type (B)Electrodynamic type (C)Eddy current type 2.Passive type In this type the motion of an object results in change in the inductance of the coils of the transducer. These may be further classified as follows: (A)Variable reluctance (B)Mutual inductance (C)Differential transfer type 1.Self-generating Type (A)Eleotromagnetic t
1 comment
Read more

Induction Motor Interview Questions with Answers | Part-1

Induction Motor Interview Questions with Answers | Part-1 Induction Motor Interview Questions with Answers | Part-1 Q.1 The frame of an induction motor is made of (A) aluminium (B) silicon steel (C) closed grained cast iron (D) stainless steel (E) bronze Answer:  (C) closed grained cast iron Q.2 The stator frame is an induction motor is used to (A) hold the armature stampings in position (B) ventilate the armature (C) protect the whole machine (D) provide return path for flux Answer:  (A) hold the armature stampings in position Q.3 The stator core of a 3 phase induction motor is laminate in order to reduce the (A) eddy current loss (B) hysteresis loss (C) both hysteresis and eddy current loss (D) weight of the stator (E) windage and friction losses Answer: (A) eddy current loss Q.4 An induction motor works with (A) dc only (B) ac only (C) ac and dc both (D) none of these Answer:  (B) ac only Q.5 Which of the following statement associated with polyphase induction motor is/are correct?
4 comments
Read more