The paper presents an analytical design of a permanent magnet claw pole machine operating in alternator regime. Ig is the ignition input that turns on the alternatorregulator assembly. Claw pole turning machines smt special machine tool. A clawpole alternator computer design strategy is presented in.
Basic principles of the homebrew axial flux alternator if. Three phasesingle phase reconnectable avr regulation 14 to 44 kva. What do you mean by 2 pole or 4 pole power generators. Analysis and characteristics improvement of clawpole alternators.
The different alternator sizes are identified by a letter of the alphabet, and increase in alphabetical order. One way to retain the costeffectiveness of the claw pole alternator while achieving higher output power is to place two claw pole rotors backtoback on a common shaft inside a common stator 40. When the engine is running the alternator supplies the electrical power required by the vehicle electrical system. When the alternator was under highspeed operation, taking it into consideration that the claws getting deformation for rotating centrifugal force and electromagnetic exciting force, the alternators changing air gap permeance model was established. This was due to rotor claw pole deformation and field coil fusing point resin crack. Abstractsynchronizing a generator to the power system must be done carefully to prevent damage to the machine and disturbances to. The paper presents also the design sheet for the studied machine. Basic principles of the homebrew axial flux alternator.
Two pole ac alternators are applied to generate 50 hz at 3000 rpm or 60 hz at 3600 rpm. Power requirements for automotive applications are. Keywords alternators, numerical analysis, numerical. Clearer drawing of the 10pole 12 coil design hugh piggott. One advantage of using stranded core is to reduce power loss or enhance transformer efficiency.
Identification of a 7phase clawpole starteralternator. There is even a section on how to design the alternator near the end of the book, but you should not need it. This thesis consists of two parts, the first dealing with the design of ironpowder. Retighten the pivot assembly and tension arm bolts. Parameter analysis and optimal design for mobile clawpole. Optimal rotor structure design of clawpole alternator for. Claw pole turning smt special machine tool brescia srl. Understanding the alternator four wires connect the alternator to the rest of the charging system. The paper presents an analytical design of a permanent magnet clawpole machine operating in alternator regime. Fundamentals and advancements in generator synchronizing.
If you have a specific cutin rpm in mind for 12volt battery charging them i can help you design a suitable alternator based on one of my standard designs or using magnets of your choice. Permanent magnet stepper motor claw pole stepper motor fig. This effectively increases the length of the clawpole alternator without changing its diameter. Tyler borysiak, myles moore, alex sklar, joshua lamb, stephen. Feb 28, 2014 this video gives an elaborated explanation on working of alternators ac generators with help of animation. Pdf analytic modelling of automotive clawpole alternator for. Tools to do service on mastervolt alternators the following tools are recommended. This paper will calculate the basic mathematical claw alternator model of the 14v machine. Mar 29, 2014 a 3phase permanent magnet alternator design using two separate stators, one on either side of a flat discshaped rotor. Design the alternator is a threephase, 12 pole synchronous selfexcited generator with builtin rectifier and regulator and cooled by an external fan. At the turning station, the workpiece is rotated by a belt acting on the claw pole.
The alternator shall be designed for operation of 10% engine overload at any power factor between. It belongs to the hybrid motors kind, the rotor uses permanent magnets. I dont really have time to do a complete alternator design for a single phase machine that i am unfamiliar with, but if you can send me drawings of of the magnet and coil shapes then i can quickly predict the output. This structure aims to establish lower levels of saturation in the clawpole of lundell alternator. Design, modelling and control of electrical machines with. In an alternator producing 3phase power, then one group of coils is at peak current while the others are not. Electromagnetic performance analysis of clawpole alternator. To test tension, place a 1516 wrench on the alternator shaft nut and apply pressure.
Brand xs alternator electrically failed after 1,227 cycles due to rotor coil wire breakage. An alternator differs from a dynamo in that it has a rotating field coil rotor and stationary generating winding stator. Identification of a 7phase clawpole starteralternator for. The rotor is of the clawpole type with the field windings fed across two slip rings, since the alternator is selflimiting with regard to current max. If we have a 30 amp alternator and weve revved it up to get 120 volts we can calculate the power available. Design and analysis of a claw pole permanent magnet motor.
Today, the standard output voltage of the claw alternator in the mobile is 12v or 24v. Improved design walkways allow easy access into the cab. One way to retain the costeffectiveness of the clawpole alternator while achieving higher output power is to place two clawpole rotors backtoback on a common shaft inside a common stator 40. New topology of direct current clawpole machines for stopstart. In order to increase the torque density necessary for the starter mode, magnets are inserted between the claws of the rotor figure 1.
Various design solutions are available depending upon the application. Pdf most of car alternators are clawpole synchronous machines with poor efficiency. Abstract the paper presents a procedure for the design of claw pole alternators for small scale wind power applications. Design the alternator is a threephase, 12pole synchronous selfexcited generator with builtin rectifier and regulator and cooled by an external fan.
Fundamentals and advancements in generator synchronizing systems michael j. The mastervolt single phase synchronous ac alternator is a brushless, rotating field design, selfexcited alternator. The alternator shall be synchronous, four pole and brushless excitation type and shall comply with the relevant requirements of specification iec 60034 or an equivalent international standard. A 3phase permanent magnet alternator design using two separate stators, one on either side of a flat discshaped rotor. Unlike most automotivetype alternators found standard on the majority of pleasure craft and marketed as lower. Control of a singlephase clawpole machine iea lund university. Clawpole alternator with sliprings 12 drive connection 35. Wind generator, permanent magnet machine, optimal design. The rotor may be configured as a cylindrical ferrite rod with multipole magnetisation along its circumference. Thompson, schweitzer engineering laboratories, inc. As introduction generalities about the claw pole machines and its application are presented. Table 1 parameters of clawpole generator power kw voltage v stator outer diametermm stator inner diametermm rotor outer. Claw pole synchronous generator for small electric systems. Alternators are also referred as synchronous generators.
You can also contact our technical support hot line at 18662889853. Rmxprt for analytical machine design or ece maxwell 2d3d for static or. To do this, some of the magnets align with only one phase at a time. Daimlerchrysler corporation battery produces about 2. Optimal design of a small permanent magnet wind generator for. If you are new to the topic of building permanent magnet alternators, then this is for you.
In a pm based claw pole machine, the pms are placed in the inter claw region i. Interest of the sevenphase clawpole drive basically the machine is a claw pole machine, also called lundell alternator, widely used in vehicles 12 because of its low costs of production. However, according to the sysnoise manual, impedance elements should not. It is in this prospective that a deep research on single phase claw pole motor has been. Design and analysis of a multipole ring magnet for sensing speed of the rotor on a claw pole alternator. Permanent magnet dc universal, clawpole alternator. Basic principles of the homebrew axial flux alternator if you. This effectively increases the length of the claw pole alternator without changing its diameter. Along with the increasing electric load in the mobile, the request of the mobile electric system is increasing as well. The rotor may be configured as a cylindrical ferrite rod with multi pole magnetisation along its circumference. Loosen the adjustment arm bolt and alternator pivot assembly bolt. Mar 14, 2011 abstract the paper presents a procedure for the design of claw pole alternators for small scale wind power applications.
The alternator, by design, generates a threephase alternating current but this is ultimately converted into direct current. In this paper, a novel rotor design of clawpole alternators for characteristics improvement is proposed from the results of both. S is used by the regulator to monitor charging voltage at the battery. Prototyping of a claw pole machine using 3d modeling. The rotating motion is conveyed by the engine through a v belt and sheave. This paper presents a study on static 3d finite element method fem coupledcircuit model of a 3kw clawpole alternator. Permanent magnet stepper motorclawpole stepper motor fig. Voltage at alternator engine off load off same as voltage at battery. Tyler borysiak, myles moore, alex sklar, joshua lamb. Enter voltage 5 voltage at alternator engine on load on voltage with 75% load applied enter. The stator phases are shifted 120 electrical degrees and the middle phase of the rotor is turned upside down to generate a higher torque.
When on our web site, look up the alternator model you have questions on and you will find hyperlinks that will take you to information pertaining to that model. The performance and efficiency of the traditional claw alternator in the mobile cannot meet with the increasing request of them anymore. For this purpose, the poles of the permanent magnets have the same polarisation as the rotor segments. After disassembly, interference between the rotor od and stator id was noted. Analytical machine design electrical machines design suite maxwell 2d3d electromagnetic fields static, dynamic t, f, motion, circuits multiphysics stresses, heat, cfd simplorer multidomain systems circuits, blocks, states, vhdlams stateoftheart design.
Modeling and control of a sevenphase clawpole integrated. Design and analysis of a multipole ring magnet for sensing. Fit a new, highquality belt over the appropriate pulleys. This video gives an elaborated explanation on working of alternators ac generators with help of animation. This alternator is uniquely designed and engineered to provide the finest performance and durability for your vessel. The removal of machining chips from the turned parts is executed by means of brushes and by a powerful suction system that facilitates the almost total elimination of residues. The design process of this motor for high speed application is introduced, and the method of structure design is analyzed, then a 5kw 40000rmin claw pole motor with outer pm rotor is designed.
The method involves a preliminary design stage by means of the classical magnetic circuit analysis and a detailed design stage involving a 3d finite element model. With appropriate gearing through the use of pulleys an alternator may operate within a speed range of 1500rpm to. Hugh piggotts popular design manual my own turbine project. The rotor pole width according to bibliographical indications p1, m1, it is recommended. Figure 2 and 3 shows the phase view of a claw pole. In addition to actively develop the new claw pole alternator, try hard to improve the performance and efficiency of the traditional motor by optimizing the parameters is a solution to the problem of efficient and economic means. Table 1 parameters of claw pole generator power kw voltage v stator outer diametermm stator inner diametermm rotor outer. Grenoble alpes, cnrs, grenoble inp, g2elab, f38000 grenoble, france, email.
Claw pole turning this is a special machine for the machining of the alternator claw pole. B is the alternator output wire that supplies current to the battery. International congress on electrical machines, sep 2008, vilamoura, portugal. Stranded core transformer loss analysis semantic scholar.
The bosch alternators service manual fits the bosch. In automotive applications, emission performance standards and. Good information to reference would be our training manual pp1127 or our training cd pp1216. Tyler borysiak, myles moore, alex sklar, joshua lamb, stephen dunn. Model based design of robust vehicle power networks. A changing air gap permeance model of the alternator and its influence were discussed in this paper. An ac generator alternator is based on the rotation of a magnet inside a fixedloop conductor. The permanent magnets are relatively weak so as to minimise selfexcitation and to permit regulation of the alternator voltage. This alternator is uniquely engineered to provide the finest performance and durability for your vessel.
One difficulty in the modeling of this type of transformer is that the core is not solid there are small gaps between core wires due to circular. Vhdlams is a format which can be read by many circuit and system simulators, including systemvision from mentor graphics. Electric system alternator type bosch g1 14 v, 33 a the alternator is ot the clawpole rotor type with builtin voltage re guiator. A further important feature is the alternator or rotor system e. The formula for the width of the pole base is determined using the formula 2. Fundamentals and advancements in generator synchronizing systems. A vhdlams model of a clawpole alternator is created using the system model generator. The advantages of numerical analysis for claw pole alternator. The system model generator creates a response surface model rsm of the clawpole by driving magnet to execute a number of static.
Includes hydraulic valves, incab control pendant, and quick coupler panel. The alternator generates a stronger voltage that builds up. Telescopic boom crawler crane 15010 tadano mantis cranes. The paper presents the tridimensional analysis of electromagnetic field of an claw poles alternator, in whose construction has been used nonmagnetic material, such aluminum, that form the rings in the rotors structure. Designmethodologyapproach the design of the claw pole machine is. Technical specification for supply, installation and. As much as we rotate manually the machine, the location 3 does not. Design and analysis of reverse claw pole alternator structure.