BLDC motor control with Hall sensor based on FRDM-KE02Z
... and runs out of C. When the rotor runs to the area of 011, the Hall sensor status changes to 011 and at the same time, the commutator changes from AC to BC, to keep the rotor running after the rotating magnet. Thus, the power sequence is AC -> BC -> BA -> CA -> CB -> AB -> AC. Here is the summary of ...
... and runs out of C. When the rotor runs to the area of 011, the Hall sensor status changes to 011 and at the same time, the commutator changes from AC to BC, to keep the rotor running after the rotating magnet. Thus, the power sequence is AC -> BC -> BA -> CA -> CB -> AB -> AC. Here is the summary of ...
November 2009
... 1. Decrease current density 2. Increase axial length, decrease stator turn 3. Increase insulation level ...
... 1. Decrease current density 2. Increase axial length, decrease stator turn 3. Increase insulation level ...
Electric Traction System.ppt
... 5. In case of dc series motor , upto the point of magnetic saturation, torque developed in proportional to the square of the current. Therefore, dc series motor requires comparatively less increased power input with the increase in load torque. Thus the series motor are capable of withstanding exces ...
... 5. In case of dc series motor , upto the point of magnetic saturation, torque developed in proportional to the square of the current. Therefore, dc series motor requires comparatively less increased power input with the increase in load torque. Thus the series motor are capable of withstanding exces ...
Experiment7
... increases to a very-high value which can damage the motor (motor runaway.) Today, series motors can operate with fixed-voltage power sources, for example, automobile starting motors; or with variable-voltage power sources, for example, traction systems. The main advantage of a shunt motor is the fac ...
... increases to a very-high value which can damage the motor (motor runaway.) Today, series motors can operate with fixed-voltage power sources, for example, automobile starting motors; or with variable-voltage power sources, for example, traction systems. The main advantage of a shunt motor is the fac ...
DC-AC-Motors-Control
... and light blue “fingers” around the rotor in Fig. 1) remains stationary during operation, relative to the motor’s casing and mounting [3]. The stator is made up of either a winding or a magnet, which creates magnetic flux in the magnetic field formed between the stator and the rotor [3]. For the sim ...
... and light blue “fingers” around the rotor in Fig. 1) remains stationary during operation, relative to the motor’s casing and mounting [3]. The stator is made up of either a winding or a magnet, which creates magnetic flux in the magnetic field formed between the stator and the rotor [3]. For the sim ...
multiplexing 7 segment display using pic microcontroller
... additional decimal point (dp) which is also a LED. Each these segments are marked as a,b,c,d,e,f,g and dp. ...
... additional decimal point (dp) which is also a LED. Each these segments are marked as a,b,c,d,e,f,g and dp. ...
Controlling DC and Servo Motors
... Varies with the design of the motor The step size is selected Based upon the precision of the positioning required The simple motor given above has a step angle of 90 degrees Based upon the spacing of the poles Connections are made to the electromagnets Through the signals marked X1, X2, Y1, and Y2 ...
... Varies with the design of the motor The step size is selected Based upon the precision of the positioning required The simple motor given above has a step angle of 90 degrees Based upon the spacing of the poles Connections are made to the electromagnets Through the signals marked X1, X2, Y1, and Y2 ...
Speed Control of Induction Machines
... starting torque. whether the load is of constant torque type or fan-type, it is evident that the speed control range is more with this method. Further, rotor resistance control could also be used as a means of generating high starting torque. For all its advantages, the scheme has two serious drawba ...
... starting torque. whether the load is of constant torque type or fan-type, it is evident that the speed control range is more with this method. Further, rotor resistance control could also be used as a means of generating high starting torque. For all its advantages, the scheme has two serious drawba ...
ELEC34 - aes journals
... severe and objectionable motor vibrations, oscillating torque, and unsymmetrical phase currents. The phase unbalanced condition causes increase in current in one or more phases and might result in blown fuse in affected phase circuit. This subsequently turns up into single phasing of the motor which ...
... severe and objectionable motor vibrations, oscillating torque, and unsymmetrical phase currents. The phase unbalanced condition causes increase in current in one or more phases and might result in blown fuse in affected phase circuit. This subsequently turns up into single phasing of the motor which ...
Starting system
... • The starting system consists of the starter motor, relay, wiring , ignition switch, battery and the starter motor. • In some Suzuki models, the ECM monitors the condition of the starting system and outputs a DTC in the event of faults • Modern starter motors are of the reduction gear type, which i ...
... • The starting system consists of the starter motor, relay, wiring , ignition switch, battery and the starter motor. • In some Suzuki models, the ECM monitors the condition of the starting system and outputs a DTC in the event of faults • Modern starter motors are of the reduction gear type, which i ...
Part I - Indian Navy
... 1.1.4. Electrical machine is the generic name for a device that converts mechanical energy to electrical energy, converts electrical energy to mechanical energy, or changes alternating current from one voltage level to a different voltage level.Electrical machines are divided into three main categor ...
... 1.1.4. Electrical machine is the generic name for a device that converts mechanical energy to electrical energy, converts electrical energy to mechanical energy, or changes alternating current from one voltage level to a different voltage level.Electrical machines are divided into three main categor ...
How to use STP Calculator
... All of the calculations within STP are accurate, however, there can be a number of estimations required to approximate the unknowns in your application. In general, these estimates and results can give valuable direction during project development. Additional complications arise when relating a moto ...
... All of the calculations within STP are accurate, however, there can be a number of estimations required to approximate the unknowns in your application. In general, these estimates and results can give valuable direction during project development. Additional complications arise when relating a moto ...
A Motor Designer Looks at Positive Temperature - Purdue e-Pubs
... induction run motors are now used, and where start·· ing torque requirements are high. A permanent split capacitor motor designed to produce sufficient starting torque would not be more efficient than the induction run motor, because of the high rotor resistance needed to develop the starting torque ...
... induction run motors are now used, and where start·· ing torque requirements are high. A permanent split capacitor motor designed to produce sufficient starting torque would not be more efficient than the induction run motor, because of the high rotor resistance needed to develop the starting torque ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... Brush Less DC motors or electronically commutated motors are electric motors powered by direct current electricity and having electronically commutation systems, rather than mechanical commentators and brushes. A BLDC motor has rotating permanent magnets and a fixed armature. An electronic controlle ...
... Brush Less DC motors or electronically commutated motors are electric motors powered by direct current electricity and having electronically commutation systems, rather than mechanical commentators and brushes. A BLDC motor has rotating permanent magnets and a fixed armature. An electronic controlle ...
Commutator (electric)
A commutator is the moving part of a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit. It consists of a cylinder composed of multiple metal contact segments on the rotating armature of the machine. The commutator is one component of a motor; there are also two or more stationary electrical contacts called ""brushes"" made of a soft conductor like carbon press against the commutator, making sliding contact with successive segments of the commutator as it rotates. The windings (coils of wire) on the armature are connected to the commutator segments. Commutators are used in direct current (DC) machines: dynamos (DC generators) and many DC motors as well as universal motors. In a motor the commutator applies electric current to the windings. By reversing the current direction in the rotating windings each half turn, a steady rotating force (torque) is produced. In a generator the commutator picks off the current generated in the windings, reversing the direction of the current with each half turn, serving as a mechanical rectifier to convert the alternating current from the windings to unidirectional direct current in the external load circuit. The first direct current commutator-type machine, the dynamo, was built by Hippolyte Pixii in 1832, based on a suggestion by André-Marie Ampère. Commutators are relatively inefficient, and also require periodic maintenance such as brush replacement. Therefore, commutated machines are declining in use, being replaced by alternating current (AC) machines, and in recent years by brushless DC motors which use semiconductor switches.