This ppt shows the working principle of dc generator,types of armature winding its designing aspectni. Full wave rectifier with centertapped transformer half wave and full wave rectifiers are used along with an rc filter to convert an ac signal to a dc signal where one or more diodes are used to either prevent one polarity of the ac signal from being applied to the load or to invert one polarity of the ac signal at the load. Computer aided electrical drawing laboratory manual table. The first photo 45deg shows a lap winding while the second photo 0deg shows a distributed winding for sinusoidal wave. Lap winding is the winding in which successive coils overlap each other. Windings are also classified as lap and wave windings. Wave winding is used for high voltage low current machines. Equalizing rings are not required in wave winding where as there are used in lap winding. Dc machine types of windings free download as powerpoint presentation. Difference between lap winding and wave winding polytechnic hub. Wave winding is suitable for high voltage but a low current ge. Aug 03, 2018 armature windings are mainly of two types lap winding and wave winding. The lap winding has many paths and hence it is used for the larger current applications. The sign refers to the direction of progression of the winding.
Wave winding definition is an armature winding in which the coils are laid in two layers and follow each other on the surface of the armature in the form of waves with the coils being so connected in series that there are only two paths for the flow of current whatever the number of poles in the machine called also series winding. Lap winding definition is a drum winding for generator and motor armatures in which each coil or set of windings overlaps the next so that there are as many armature paths as there are fieldmagnet poles. Lap winding wave winding lap winding is suitable for low voltage and high current generator. Wave winding figure from principles of electric machines and power electronics, 2nd edition, p. Dec 02, 2014 there are kinds of winding way when design a motor,there is a wave winding diagram for example slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Bbuild up the layout of a lap winding for a 3 phase ac machine comprising 4 pole and 24 slots. Ac double layer wave winding diagram is one such type of winding where the. Lap winding is further divided as simplex and duplex lap winding. The total power losses in the block wave winding is less than the one resulting from the use of lap winding, since the number of wave winding blocks located in the active region is 3 times less than the number of lap winding blocks. Basic construction of dc machines wave winding cont 17. In a method of wave winding armatures having four or more poles using a flier type armature winding machine, the improvement wherein coils successively wound by a flier are wound by the flier rotating in the same direction for each coil, the armature is rotated through 360 electrical degrees plus or minus the angle between adjacent coil.
One end of coil 1 goes to segment a, and the other end of coil 1 goes to segment b. Twolayer winding and multiplex winding electric equipment. Wave winding is also sometimes known as series winding. The only disadvantage of the lap winding is that it requires many conductors which increase the cost of the winding.
Lap winding simplex and duplex lap winding electrical study. Introduction to double layer simplex wave winding diagram. Since the successive coils overlap each other and hence the name ref. Dc machine types of windings electromagnetic induction. Draw the winding diagram for a 2 pole, 6 slot double layer simplex wave connected dc machine with commutator comprising 12 segments. This winding is known as lap winding because the side of successive coils overlap each. Mar 23, 2014 in the link it says the same thing that in lap winding the number of parallel path are equal to the number of poles, and in wave winding its always two. Coils are laid out in a wave pattern and cross all the poles. Three phase ac double layer wave winding diagram, a simplified method.
Jul 17, 2012 the old grammering armature,now obselete is shown in figure view a. In case of lap winding, the number of parallel path a number of poles p. This winding is suitable for small generators circuit with voltage rating 500600v. Wave winding definition is an armature winding in which the coils are laid in two layers and follow each other on the surface of the armature in the form of waves with the coils being so connected in series that there are only two paths for the flow of current whatever. Design and draw developed simplex armature winding diagram of dc motorgenerator with 4 pole, 14 slots, double layer progressive lap winding. In this type of winding the coil sideab progressforward around the armature to another coil side and goes on successively passing through n and s pole till it returns.
Most popular documents from defence degree college for boys, lahore. Computer aided electrical drawing laboratory manual table of contents sl no name of the drawing page number 1. For a given number of poles and armature conductors it gives more emf than that of lap winding. International journal of engineering research and applications ijera, vol. Lap winding simplex and duplex lap winding electrical4u. In wave winding number of parallel paths is two a2. In armature winding, the conversion of power takes places, i. Figure represents an unrolled lap winding of a dc armature, along with the commutator segments. F equation numerical problems parallel pathsarmature reaction cross magnetizing and. Single layer wave winding fig 18 double layer wave winding the above figures show the details of lap and wave windings for one phase emf equation of an alternator. In lap winding a coil side under one pole is connected directly to a coil side which occupies a nearly corresponding position under the next pole by means of back connections, and this second coil is then connections, and this second coil is then connected back through the commutator segment, to a coil side under the original pole, but.
Simple wave wound generator numbers of parallel paths are only 2 a therefore, induced emf for wave type of winding generator is simple lapwound generator here, number of parallel paths is equal to number of conductors in one path i. The armature conductor parallel paths are equals to the number of poles. In this winding end of one coil is connected to the commutator segment and start of the adjacent coil situated under the same pole as shown in fig. Lap winding definition of lap winding by merriamwebster. Pdf winding diagrams are an integral part of electrical machine design. It is named lap winding because it doubles or laps back with its succeeding coils. Figure represents an unrolled wave winding of a dc armature, along with the commutator segments bars and stationary brushes. Each coil is connected to two commutator segments as shown. Simple wave wound generator numbers of parallel paths are only 2 a therefore, induced emf for wave type of winding generator is simple lap wound generator here, number of parallel paths is equal to number of conductors in one path i. Wave winding definition of wave winding by merriamwebster. In this video, you will learn about armature windings, lap and wave type of armature windings, equalizer rings and dummy coils.
Usually, one side of every coil lies in the upper half of one slot and other side lies in the lower half of some other slot at a distance of approximately one pitch away fig. The winding in which successive coils overlap each other hence it is called lap winding. May 24, 2018 in this video, i describe about lap and wave winding in dc machine. Lap and wave winding winding concept latest update 2018. This application applies piotr wach algorithmic method and extends it to calculate symmetrical components of slot fem. In this winding the end of one coil is connected to the starting of another coil of the same polarity as that of the first coil. Parallel path in lap and wave winding physics forums. Double layer lap winding development of winding ac machine.
There are kinds of winding way when design a motor,there is a wave winding diagram for example slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Mar 06, 2017 in this video, you will learn about armature windings, lap and wave type of armature windings, equalizer rings and dummy coils. The purpose in using one over the other has a lot to do with ease of manufacture and application. In lap winding finish end of one coil is connected to a commutator segment and to. Because wave windings have only two parallel paths, this winding is more suited for high. In this winding the finishing end of one coil is connected to one commutator segment and the starting end of the next coil situated under the same pole and connected with same commutator. Generators 889 proportional to the rate of change of flux linkages e nd. Two types of double layer winding are simplex lap winding finish of a coil is connected to start of next coil. In this video, i describe about lap and wave winding in dc machine. In wave winding the emf produced is high when compared to lap winding with same poles and conductors and also the number of conductors, slots used should be more when compare to lap so, for more emf and small generators we use wave winding. What is the difference between lap winding and wave winding. In lap winding finish end of one coil is connected to a commutator. Hence wave winding is used in high voltage and low current machines.
After seeing this video your all doubt will be clear about this topic. Lap winding is suitable for low voltage heavy current applications, while wave winding is used in high voltage low current applications. Lap and wave winding engineering tutorials free download. When two adjacent commutator bars make contact with a brush, p2 coils are shorted by the brush in the wave winding. In wave winding, only two parallel paths are provided between the positive and negative brushes. Lap winding in lap winding, the finishing end of one coil is connected to a commutator segment and to the starting end of the adjacent coil situated under the same pole and so on, till all the coils have been connected. Lap winding article about lap winding by the free dictionary. Armature windings are mainly of two types lap winding and wave winding. Lap winding is suitable for low voltage high current machines because of more number of parallel paths. In this winding, the conductors per pair of poles are in series connection. Difference between lap winding and wave winding table format.
Armature windings lap and wave windings year 2 youtube. Most windings process tries to make it easier to automate the insertion of the coils into the slots of the stator. In this type of winding, there are two conductors or coil sides per slot arranged in two layers. For m 1 we get a simple lap winding, m 2 gives duplex lap winding etc. No parameters lap winding wave winding 1 number of parallel paths in the winding. Single phase windings lap winding wave winding concentric winding three. Pdf three phase ac double layer wave winding diagram, a. In wave windings, the number of parallel paths, a,is always two 2, and there may be two or more brush positions.
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