What are the advantages and disadvantages of electric drive system?
The electric drives are free from pollution. The electric drives operate on all the quadrants of speed torque plane. The drive can easily be started and it does not require any refuelling. The efficiency of the drives is high because fewer losses occur on it.
What are the advantages of electric drive system?
Advantages of Electrical Drives Enough overload capacity without loss of life of machine. Four quadrant operation. Modifiable torque-speed characteristics. No requirement of warming up period.
What are the disadvantages of group drive?
Group drive has high overload capacity. Speed control of individual machine is very difficult. It does not give good appearances due to use of line shafting pulleys and belts. Group drives are less safe to operate.
What is multi drive system?
A multidrive is built from industrial drive modules that are connected to a common dc bus bar. inverts the dc to ac and powers an individual motor. Application. In general terms, multidrives can be used whenever several drives and motors form part of a single or integrated mechanical process.
Which is the application of universal motor?
Universal motors have high starting torque, can run at high speed, and are lightweight and compact. They are commonly used in portable power tools and equipment, as well as many household appliances. They’re also relatively easy to control, electromechanically using tapped coils, or electronically.
What are the merits and demerits of individual and group drives?
Comparison Chart
| Individual drive | Group drive |
|---|---|
| Less power is wasted if fewer machines are working. | More power is wasted if fewer machines are running but more economical when all machines are working in a full load. |
| High initial capital investment. | Less initial capital investment. |
What is the another name of universal motor?
This is a type of AC commutator motor. Although mainly used on single-phase AC, it rotates on both AC and DC power. It is also called a “universal motor” or “commutator motor”. Its major applications are electric vacuum cleaners, power tools, and juicers.
How can you control the speed of universal motor?
Three methods of controlling the speed of a universal electric motor were discussed. These are the resistance control method, the field tapping method, and the centrifugal switch method. In the resistance control method, a variable resistance in series with the motor is used to set the RPM.
What is electric drive and its application?
The applications of electric drives mainly include industrial as well as domestic applications such as transportation systems, factories, fans, textile mills, pumps, robots, motors, etc. These drives are used as main movers used for hydraulic & electric motors, petrol or diesel engines, steam or gas turbines.
What is the main applications of electric drives?
Electrical drives are extensively used in the huge number of domestic as well as industrial applications which includes motors, transportation systems, factories, textile mills, pumps, fans, robots, etc.
What are the benefits of using one Multidrive?
As explained, multidrive solutions often benefit from lower rectifier power. IN general, the voltage and current distortion decreases with reduced power. Analogously, if a grid side harmonic filter is required (rare case though), it is much easier to install it on one multidrive instead of dealing with multiple drive units.
What are the benefits of a VFD Multidrive?
VFD multidrive allows a combination of different types of motors (induction machines, synchronous electrically excited machines, permanent magnet synchronous machines). Compared to multiple single drive units a multidrive solution offers long list of benefits.
What are the advantages and disadvantages of multiprocessor systems?
While multiprocessor is ideal if you want to execute multiple processes at the same time. Multicore CPU consumes more electricity than a multiprocessor system because a multicore CPU has a higher performance load than the multiprocessor system. Multiprocessor System Advantages of multiprocessor systems:-
What are the advantages of variable frequency drive?
1. Stepless speed control up to 100 Hz (Twice the motor rated speed) 2. Synchronization of multi-motor operations. 3. Constant surface speed for winding application. … … Electrical AC motor speed if a fixed value determined by the grid frequency and the number of poles in the stator winding.
What are the advantages and disadvantages of multi user operating system?
Types of multiprocessor operating system What is local area network (LAN) in computer What is client server network with example Advantages and disadvantages of peer to peer network What is boot sequence What are advantages and disadvantages of UNIX operating… What is job shop with example What is shareware with example Home Computers
What are the disadvantages of using multiple processors?
Communication:As multiple processors are communicating with each other so the operating system implementation is complex to handle. More memory required:As there are multiprocessors working with each other so each processor needs memory space.
1. Stepless speed control up to 100 Hz (Twice the motor rated speed) 2. Synchronization of multi-motor operations. 3. Constant surface speed for winding application. … … Electrical AC motor speed if a fixed value determined by the grid frequency and the number of poles in the stator winding.
What are the advantages and disadvantages of a multi party system?
Advantages and disadvantages of multi party system: Multi-party system is a political system in which more than two political parties are allowed to exist and compete for gaining of political power and governing the country.