Introduction: The brushless DC motor is a very common and unique piece of machinery that we take advantage of in everyday life. For example the Brushless DC motor is commonly found in computers. This essay will prove how a brushless DC motor works, its advantage and disadvantages also the difference between a brushless DC motor and a brushed DC motor. Throughout this essay multiple physics concepts and equations will be discussed.
Motor Effect: To summarise the motor effect it is the idea that the force caused by current flowing through a wire and causing a magnetic field around it. When this created magnetic field interacts with a magnetic field from a fixed magnet, it causes a force which moves the wire in relation to the right hand…
Brushless DC Motor Physics Report.
Motor: A machine powered by electrical current or the explosion of gases inside chambers that will provide movement for a vehicle.
When an electric current, magnetic field or external force acts on a coil found inside of the motor, it will provide force to it, thus causing the coil to move, the coil rotates on a half turn basis otherwise the motor is forced to stop and will not move.
The Motor Effect
Motor effect refers to a current carrying…
Business-to-Business Orthopedic Motor Market
generated approximately 33% of its dollar revenue from this segment (see Exhibits 1A and 1B) and
held a 19% share of the market in this segment.
Segment B placed a premium on the motor’s thermal resistance performance and also highly valued
the market and technical knowledge of a manufacturer’s sales representatives. This segment
represented just under 8% of the company’s revenue and MM’s market share in this segment was 4%.
A high thermal…
Direct Current (DC) motors
A Direct Current (DC) motor is one of the broader classification of electric motors which operate from a direct current. Nearly all mechanical devices applied in daily life activities are powered by electric motors. Motors transform electrical energy to mechanical energy, hence they are essential for energy conversions in electrical machines.
All types of electrical motors are made up of a stationary field referred to a stator and…
industrial drives) three-level inverters are used extensively -, and recently, their application in low-voltage, high-power traction applications have been introduced -. In these applications, the three-level inverters often need to operate with modulation indices (m) lower than 0.5 - . Additionally, at lower modulation indices, traction drives operating with induction motors (IMs), interior permanent magnet motors (IPMs) or synchronous reluctance motors (SynRMs) may need to…
2.1 OVERVIEW OF PROJECT
The project consists of a module that is being used for image processing. This is done by employing a Raspberry Pi development board and the convex hull method. The power source is a 230 V AC supply which is being converted to 12 V AC and then to DC using a rectifier circuit. This is powering the relay circuit that is being employed. A robotic arm with 2 active motors has been used to demonstrate the plenty applications that this technology could be used for.
prefferable to use the straight core. The logic behind it is given as follows. When the magnetic flux drops with the current, it will not become zero as the current drops to zero, but it will be dependant on the residual magnetic field. The residual magnetic field of an open circuit is much less than with the closed circuit of iron (Haller and Cunningham 4). Given that the electromotive force in the secondary winding is directly proportional to the drop in the magnetic field, it follows that…
Interleaved Buck Converter System
Interleaved Buck Converter has lots of concentration due to its simple and low control complexity in application. where no isolation and high output current with low ripple. An No isolation DC/DC converter Fig.1.1 shows the step-down DC/DC converter. When switch M is on for the duration of dTs, power is transferred from source to load and filter inductor L is charged. When switch M is off for a duration (1-d)Ts, the diode D…
Rotor and touchdown bearing models
Fig. 1 features the case study of the high-speed rotor. The photo was taken after manufacturing of the electric motor part, when the rotor was carried to the laboratory for an experimental modal analysis. During normal operation, the rotor is supported by AMBs. In the dropdown event, the rotor is in contact with touchdown bearings at both ends of the rotor.
Fig. 1. Rotor under investigation.
In this work, the finite element model of the rotor employs…
Microhardness and microstructural analysis of friction stir welded AA5052-H34 joints
B. Magamai Radja,* and T. Senthilvelana
aDepartment of Mechanical Engineering, Pondicherry Engineering College, Pondicherry University, Puducherry 605 014, India
Friction stir welding a novel solid state welding which gains momentum in versatile applications viz., aerospace, marine, defense equipments and automobile industries. In the present work, AA 5052-H34 weldments have been prepared by FSW…