How the design problems of electrical machines can be classified? … The major considerations to evolve a good electrical machine are the specific magnetic loading, specific electric loading, temperature rise, efficiency, length of air gap and power factor. 11.
What are the classification of electrical machines?
The electric machines are of three main types, transformer, generator, and motor.
What are the affecting the design of electrical machines?
Major considerations in Electrical Machine Design – Electrical Engineering Materials – Space factor – Choice of Specific Electrical and Magnetic loadings – Thermal considerations – Heat flow – Temperature rise – Rating of machines – Standard specifications.
What are the different methods of electrical machine design?
There are some general design methods, which can be applied in terms of different disciplines/domains: electromagnetic design, thermal design, structural design, multi-physics design, material design, and manufacturing process design.
What are the main design parts of an electric machine?
The two main parts of an electrical machine can be described in either mechanical or electrical terms. In mechanical terms, the rotor is the rotating part, and the stator is the stationary part of an electrical machine.
What is electric machine design?
The basic design of an electrical machine involves the dimensioning of the magnetic circuit, electrical circuit, insulation system etc., and is carried out by applying analytical equations. A designer is generally confronted with a number of problems for which there may not be one. solution, but many solutions.
What is machine and types of machine?
Thus defined, such simple devices as the lever, the pulley, the inclined plane, the screw, and the wheel and axle are machines. They are called simple machines; more complicated machines are merely combinations of them.
What are the design constraint while designing any electrical machine?
Limitations in design: The materials used for the machine and others such as cooling etc., imposes a limitation in design. The limitations stem from saturation of iron, current density in conductors, temperature, insulation, mechanical properties, efficiency, power factor etc.
What are the limitations in machine design?
LIMITATIONS IN ELECTRICAL MACHINE DESIGN
- LIMITATIONS IN ELECTRICAL MACHINE DESIGN. …
- SATURATION: …
- TEMPERATURE RISE: …
- INSULATION: …
- EFFICIENCY: …
- COMMUTATION: …
- POWER FACTOR: …
- CONSUMER SPECIFICATION:
What are the limitations in design?
Design constraints are limitations on a design. These include imposed limitations that you don’t control and limitations that are self-imposed as a way to improve a design. The following are common types of design constraint.
What is the important of magnetizing current in machine design considerations?
In induction motors, the consideration of magnetising current is very important as an increased value of magnetising current means a low operating power factor. Therefore the specific magnetic loading in the case of induction motors is lower than that in d.c. machines.
What are the consideration for design of armature?
Explanation: There are 5 factors that decide the design of the armature of synchronous machines. They are i) single or double layer winding, ii) number of armature slots, iii) coil span, iv) turns per phase, v) conductor section.
In what way is the design of synchronous machines different from the design of induction machines briefly explain why?
The induction motor has self-starting torque whereas the synchronous motor is not self starting. It has to be run up to synchronous speed by any means before it can be synchronized to AC supply. A synchronous motor can be operated with lagging and leading power by changing its excitation.
What is the condition of the good design?
A good design is intuitive
A design makes how to use, perceive, and understand a product obvious. A good design explains its function. “It clarifies the product’s structure. Better still, it can make the product clearly express its function by making use of the user’s intuition.