EE 340 Spring 2011 - UNLV

Power Semiconductor Switching Devices

Classification of power semiconductor switches ... • The MCT is a power switch with a MOS gate for turn- on and turn-off. It

  Switch, Power, Semiconductors, Power semiconductor

Power Semiconductor Switching Devices - …

Ideal controllable Power Semiconductor Switch • When turned on, current can flow only in the direction of the arrow

  Switch, Semiconductors, Semiconductor switch

Induction Machines - Howard R. Hughes College of …

3-Phase induction machine construction • 3 stator windings (uniformly distributed as in a synchronous generator) • Two types of rotor: – Squirrel cage

  Induction

EE 340 – Transmission Lines

Electrical 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

  Line, Transmissions, Ee 340 transmission lines

Mechanics of Materials - University of Nevada, Las Vegas

ME 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

9-12 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

  Converter, Resonant

PowerPoint Presentation

The 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

  Transform, Laplace, The laplace transform

Sunlight and its Properties - Howard R. Hughes College of ...

Types 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.

  Properties, Sunlight, Sunlight and its properties

Magnetic Circuits - UNLV

Ampère 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

  Loops, Magnetic

Obtain the z parameters for the network in Fig. 19.65.

* 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

3-Phase Induction Motors - UNLV

• Motor Slip • R 1 and R 2: stator and rotor winding resistances • X 1 and X 2: stator and rotor winding leakage reactances • X m: magnetizing reactance • R c: core loss resistance • Rotor winding parameters are referred to the stator side s s m n n n s Power flow diagram 3 [ (1 ) / ] 3 3 ( / ) 3 / 3 …

  Resistance, Slip

A Textbook of Electrical Technology Vol. 2 - Theraja - Weebly

Methods of Improving Commutation—Resistance Commuta- or Compoles— Qualising Connections—parallel Operation of Shunt Genera- tors—ParallelingD -C. Generator—Load Sharing—Procedure for paralleling D _C_ Generators— Compound Generators in Parallel—Series Generators in Parallel. 966 25. Elements of Electro-mechanical Energy …

  Resistance

3 4 5 6 7 8 9 10 11 12 13 14 15 - SDP/SI

i r 1 2 3 4 5 6 7 8 9 10 11 12 13 t 14 15 a phone: 516.328.3300 • fax: 516.326.8827 • www.sdp-si.com timing belts, pulleys, chains and sprockets table of contents ...

LADDER SAFETY - University of Washington

fiberglass ladders, which must be able to sustain 3.3 times the maximum intended load. Fixed ladders cannot be readily moved or carried because they are an integral part of a building or structure. Never subject a ladder to a load greater than its duty rating, which is the total load of the person’s weight, equipment, tools and materials.

  Safety, Ladder, Ladder safety

AC Motor Speed Control - University of Alabama

Variable Series Resistance ... Variable Resistor “The traditional way to control the speed of a wound rotor induction motor is to increase the slip by adding resistance in the rotor circuit. ...

  Control, Resistance, Motor, Speed, Slip, Ac motor speed control