EE 340 Spring 2011 - UNLV
• A brushless exciter is a small AC generator whose field circuits are mounted on the stator and armature circuits are mounted on the rotor shaft. • The exciter generator’s 3-phase output is rectified to DC by a 3-phase rectifier (mounted on the shaft) and fed into the main DC field circuit.
Download EE 340 Spring 2011 - UNLV
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document:
Advertisement
Documents from same domain
Power Semiconductor Switching Devices
www.egr.unlv.eduClassification of power semiconductor switches ... • The MCT is a power switch with a MOS gate for turn- on and turn-off. It
Power Semiconductor Switching Devices - …
www.egr.unlv.eduIdeal controllable Power Semiconductor Switch • When turned on, current can flow only in the direction of the arrow
Induction Machines - Howard R. Hughes College of …
www.egr.unlv.edu3-Phase induction machine construction • 3 stator windings (uniformly distributed as in a synchronous generator) • Two types of rotor: – Squirrel cage
EE 340 – Transmission Lines
www.egr.unlv.eduElectrical Characteristics • Transmission lines are characterized by a series resistance, inductance, and shunt capacitance per unit length. • These values determine the power-carrying capacity of the
Mechanics of Materials - University of Nevada, Las Vegas
www.egr.unlv.eduME 302 Materials Mechanics Introduction and Overview This is a fundamental course in all Civil and Mechanical Engineering Programs. Sometimes it is called:
Material, Mechanics, Mechanics of materials, Materials mechanics
Resonant Converters - University of Nevada, Las Vegas
www.egr.unlv.edu9-12 ZCS Resonant-Switch Converter By controlling the switch-off time (t 4 - t 3), i.e., the switching frequency, the average value of v oi, hence the average power supplied to the load
PowerPoint Presentation
www.egr.unlv.eduThe Laplace Transform Theorem: Initial Value If the function f(t) and its first derivative are Laplace transformable and f(t) Has the Laplace transform F(s), and the exists, then
Sunlight and its Properties - Howard R. Hughes College of ...
www.egr.unlv.eduTypes of Radiations • Scattered sunlight (what makes the sky blue) is responsible for the light entering the north-facing windows. It is referred to as diffuse radiation.
Magnetic Circuits - UNLV
www.egr.unlv.eduAmpère in 1826) relates the integrated magnetic field around a closed loop to the electric current passing through the loop. where H is the magnetic field intensity (measured in At/m) • At a distance r from the wire, ³ H .dl I ³ H .dl H .( 2Sr ) I
Obtain the z parameters for the network in Fig. 19.65.
www.egr.unlv.edu* Find the impedance parameter equivalent of the network in Fig. 19.66. Figure 19.66 For Prob. 19.2. * An asterisk indicates a challenging problem. Chapter 19, Solution 2. Consider the circuit in Fig. (a) to get z11 and z21. 1 Ω I2 = 0 + V1 − 1 Ω I1 (a) Io + V2 − Io' 1 Ω 1 Ω 1 Ω 1 Ω 1 Ω 1 Ω
Related documents
AN885, Brushless DC (BLDC) Motor Fundamentals
electrathonoftampabay.orgCompared to brushed DC motors and induction motors, BLDC motors have many advantages and few disadvantages. Brushless motors require less mainte-nance, so they have a longer life compared with brushed DC motors. BLDC motors produce more out-put power per frame size than brushed DC motors and induction motors. Because the rotor is made of perma-
AN885, Brushless DC (BLDC) Motor Fundamentals
ww1.microchip.comCompared to brushed DC motors and induction motors, BLDC motors have many advantages and few disadvantages. Brushless motors require less mainte-nance, so they have a longer life compared with brushed DC motors. BLDC motors produce more out-put power per frame size than brushed DC motors and induction motors. Because the rotor is made of perma-
Sensorless Field Oriented Control (FOC) of a Permanent ...
ww1.microchip.comJan 05, 2010 · like DC values using standard control loops. Vector Control Summary The indirect vector control process can be summarized as follows: 1. The 3-phase stator currents are measured. These measurements provide values i a and i b. Ic is calculated by the following equation: ia + ib + ic = 0. 2. The 3-phase currents are converted to a two-axis system.
Phases, Control, Field, Oriented, Sensorless, Sensorless field oriented control
Electric Motors and Drives
www.emic-bg.orgSingle-phase fully controlled converter – output voltage and control 57 3-phase fully controlled converter 62 Output voltage range 64 ... Brushless D.C. Motors 357 Contents xiii. Switched Reluctance Motor Drives 358 Principle of operation 359 Torque prediction and control 360
Simple Analysis for Brushless DC Motors Case Study: Razor ...
web.mit.eduSimple Analysis for Brushless DC Motors Case Study: Razor Scooter Wheel Motor At first glance, a brushless direct-current (BLDC) motor might seem more complicated than a permanent magnet brushed DC motor, but the purpose of the following is to emphasize the simple analytical techniques that can be used to understand the operation of a BLDC ...
Direct, Current, Motor, Brushless, Brushless dc, Dc motor, Brushless direct current
Types of Electric Motors - UAH - Engineering
www.ece.uah.edu4. BhlBrushless DC motor: a close cousin of a permanent magnet stepper motor with electronic controllers 5. Universal motor: If a seried dc motor has a laminated stator frame, it can run effectively htt // l d iki di / iki di / /6/67 from an ac supply as well as dc, this is the universla motor.
Brushless DC Motors - New York University
engineering.nyu.eduBrushless DC Motors K. Craig 4 – In rotational electromechanical devices other than dc machines, torque is produced as a result of one or more magnetic fields which rotate about the air gap of the device. – Reluctance machines, induction machines, synchronous machines, stepper motors, and brushless dc motors
Brushless DC Motor Speed Controller
rm-static.djicdn.comC620 Brushless DC Motor Speed Controller. 5 6 [1] 7-Pin Port Connects to M3508 for data exchange. [2] 3-Phase Power Cable Connects to the 3-phase cable of the M3508. Ensure the cables are securely connected with the corresponding colors correctly matched. [3] Termination Resistance Switch
Brushless DC Motor Control Made Easy
ww1.microchip.comand optimized for a Pittman N2311A011 brushless DC motor. Other motors were also tested to assure that the code was generally useful. Anatomy of a BLDC Figure 1 is a simplified illustration of BLDC motor con-struction. A brushless motor is constructed with a per-manent magnet rotor and wire wound stator poles.
AN885, Brushless DC (BLDC) Motor Fundamentals
ww1.microchip.comCompared to brushed DC motors and induction motors, BLDC motors have many advantages and few disadvantages. Brushless motors require less mainte-nance, so they have a longer life compared with brushed DC motors. BLDC motors produce more out-put power per frame size than brushed DC motors and induction motors. Because the rotor is made of perma-