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Electronically commutated motor
Vykopal, Petr ; Melichar, Petr (referee) ; Vítek, Ondřej (advisor)
The main idea that lead to the development of EC (electronic commutation) motors is to remove from commutation motors, called DC (direct current) motors, the mechanical commutation system i.e. the cylinder brushes and the commutator that limits in most of the applications the longevity of direct current motors. The commutator is the source of electromagnetic interference and it limits the motor speed. At the same time it is required to keep the outstanding features of DC motors, mainly the multiple overload capacity, high starting torque, low time constant and small dimensions. Thesis introduces the problematic of electrically switched machines and their possible construction versions. Based on obtained findings there is performed an analytical calculation of EC-machine with classical stator (made with two grooves on pole and phase) and with segmental stator for given parameters. With the known parameters of the machines from personal design there were created models of both machine types, and the results obtained from the program FEMM were compared to those of analytical calculations.
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Programming of the two-axle drive with Maxon EC motors
Toman, Jiří ; Pazdera, Ivo (referee) ; Koláčný, Josef (advisor)
This work describes direction of the two-axle drive with EC motors type MAXON by means of control unit EPOS. Except own direction of EC motors it contains various types progress for proposal parameters of the continuous and discrete regulator with consequence verification and character comparison by means of programming surroundings MATLAB. After the successful simulation verification is introduced most suitable regulator for positional direction of the two-axle drive into the real control units EPOS which they are connected to EC motors MAXON with making sign EC- max 22. Further is realized communication setting among control unit type EPOS P and her subjection unit EPOS. Unit EPOS P is further connected with steering computer by means of serial bus RS 232. Other part these work is program for direction of the two-axle drive copying the inscription MAXON with use linear and circular interpolation. To creation of the program source code is used standard programming language ST. This program is realized in programming surroundings EPOS STUDIO which is added by the producer to control units EPOS.
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Design of permanent magnet synchronous machine
Blaha, Jan ; Ondrůšek, Čestmír (referee) ; Vítek, Ondřej (advisor)
Nowadays in the area of drives, classical direct current machines are replaced for reason of low efficiency and low service life their frictional part by synchronous permanent magnet machines, among that belongs brushless or electronically commutated machines. This machines provide benefits of fine and effective regulation with no limits incurrenced by mechanical parts. Within this work, introduction with properties and construction of various types synchronous machines witch permanent magnets are performed, further the analytical calculation of design are made with effort to the best configuration for requisite characteristics. This design is compared with simulation made by computer technique and in the next step modifications of individual parts and choosen parameters for maximizing efficiency and minimizing volume are made. Comparison of success changes in design is made by simulation in program RMXprt again and the final machine is compared with original design, benefits of changes within efficiency and with considering of quantity used material are evaluated and his charakteristics are checked by Finite Element Method.
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Design of permanent magnet synchronous machine
Blaha, Jan ; Ondrůšek, Čestmír (referee) ; Vítek, Ondřej (advisor)
Nowadays in the area of drives, classical direct current machines are replaced for reason of low efficiency and low service life their frictional part by synchronous permanent magnet machines, among that belongs brushless or electronically commutated machines. This machines provide benefits of fine and effective regulation with no limits incurrenced by mechanical parts. Within this work, introduction with properties and construction of various types synchronous machines witch permanent magnets are performed, further the analytical calculation of design are made with effort to the best configuration for requisite characteristics. This design is compared with simulation made by computer technique and in the next step modifications of individual parts and choosen parameters for maximizing efficiency and minimizing volume are made. Comparison of success changes in design is made by simulation in program RMXprt again and the final machine is compared with original design, benefits of changes within efficiency and with considering of quantity used material are evaluated and his charakteristics are checked by Finite Element Method.
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Programming of the two-axle drive with Maxon EC motors
Toman, Jiří ; Pazdera, Ivo (referee) ; Koláčný, Josef (advisor)
This work describes direction of the two-axle drive with EC motors type MAXON by means of control unit EPOS. Except own direction of EC motors it contains various types progress for proposal parameters of the continuous and discrete regulator with consequence verification and character comparison by means of programming surroundings MATLAB. After the successful simulation verification is introduced most suitable regulator for positional direction of the two-axle drive into the real control units EPOS which they are connected to EC motors MAXON with making sign EC- max 22. Further is realized communication setting among control unit type EPOS P and her subjection unit EPOS. Unit EPOS P is further connected with steering computer by means of serial bus RS 232. Other part these work is program for direction of the two-axle drive copying the inscription MAXON with use linear and circular interpolation. To creation of the program source code is used standard programming language ST. This program is realized in programming surroundings EPOS STUDIO which is added by the producer to control units EPOS.
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|
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Electronically commutated motor
Vykopal, Petr ; Melichar, Petr (referee) ; Vítek, Ondřej (advisor)
The main idea that lead to the development of EC (electronic commutation) motors is to remove from commutation motors, called DC (direct current) motors, the mechanical commutation system i.e. the cylinder brushes and the commutator that limits in most of the applications the longevity of direct current motors. The commutator is the source of electromagnetic interference and it limits the motor speed. At the same time it is required to keep the outstanding features of DC motors, mainly the multiple overload capacity, high starting torque, low time constant and small dimensions. Thesis introduces the problematic of electrically switched machines and their possible construction versions. Based on obtained findings there is performed an analytical calculation of EC-machine with classical stator (made with two grooves on pole and phase) and with segmental stator for given parameters. With the known parameters of the machines from personal design there were created models of both machine types, and the results obtained from the program FEMM were compared to those of analytical calculations.
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