Keyhani PowerPoint PPT Presentations

Lecture #2. 3-Phase Transformer. 2. 3-phase Transformers ... Problem 2. Three single-phase transformers each rated at 4.4 kVA, 220 volts ...

1. EE 740. Professor Ali Keyhani. Lecture #1. Introduction to Power System. Analysis and design. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12 ...

EE 740. Professor Ali Keyhani. Lecture #9. Z Bus Matrices. z12 ... I1=(Z2/Z1 Z2)IS. Current Divisor Principal. z12=1. z13=1. z23=1. z3=1. 1. 2. 3. 2/3. 1/3. V3 ...

EE 740. Professor Ali Keyhani. Lecture #3. Ideal Transformers. I1. I2. I1. I2. V1. V2. V1. V2 ... I2 pu. Sb. Zpu2 = Rs/a2 jXs/a2 =1/a2(Rs jXs)(1/Zb2) = 1/a2 ...

Pulse-Width Modulation (PWM) Techniques Lecture 25 Instructor: Prof. Ali Keyhani Contact Person: E-mail: keyhani.1@osu.edu Tel.: 614-292-4430 Department of Electrical ...

Pulse-Width Modulation (PWM) Techniques Lecture 25 Instructor: Prof. Ali Keyhani Contact Person: E-mail: keyhani.1@osu.edu Tel.: 614-292-4430 Department of Electrical ...

Ali Keyhani. Professor of Electrical and Computer Engineering ... Jin-Woo Jung and Ali Keyhani, 'Control of a Fuel Cell Based Z-Source Converter' ...

EE341 Energy Conversion. Ali Keyhani. Synchronous Machines. lecture #3 ... rated at 220 volts ... Electrical power supplied. Tem produced to support ...

Collection of artworks in shades of blue by Michael de Bono, Mostafa Keyhani and Oleg Zaharevich The assigning of symbolic meanings to colors is probably as old as symbolism itself. In fact, words are well adapted for description and the arousing of emotion, but for many kinds of precise thought other symbols are much better. (John B. S. Haldane).

MAN AND ENERGY A case for Sustainable Living through Renewable and Green Energy Ali Keyhani Professor of Electrical and Computer Engineering The Ohio State University

Lecture 4. Synchronous Machine Modeling. Professor: Ali Keyhani ... Summary of Dynamic Equations of Three-Phase Synchronous Machine. 2 ...

... Controlled Smart Grid of the Future with High Renewable and Green Energy ... Development of control technology for operation of renewable sources as steam units ...

modeling and simulation of hydraulic power steering system with matlab mohammad akteruzzaman advisor: dr. shuvra das modeling and simulation of hydraulic power ...

Suppose the rotor is at standstill (that is rotor is stationary, m=0) ... b) Rotor is free to rotate. Relationship between I1 and I2, and E1 and E2. Define ...

Peak Clipping. Smart Grid Load Management Techniques. 74. Peak Clipping: Peak clipping method seeks to reduce. the peak load demand and match it ...

This program is open to immigrants with skills that are in demand in the economy and who are also assessed to have the ability to integrate themselves in the country. A new program, Express Entry (implemented starting January 2015), assesses applicants based on an online profile they complete, putting them into a pool and inviting top candidates to apply for permanent resident status.

Considering a R-L circuit: If at t=0, the switch is closed. ... After some time (transient state), the current reaches steady state as shown in the figure. ...

Using Ohm's law the voltage across each resistor is found: Voltage Division ... Using Ohm's law the current through each resistor is found: Current Division ...

EE 647. Digital Signal Processor (DSP) Based Control of Electric ... 1) Perform A/D and D/A Conversions. 2) Use Real-Time Monitor feature of Code Composer ...

that is mechanical power supplied by the prime mover. m and sync are rotating in ... of a 400 V, 3-phase WYE-connected, four-pole, 60Hz induction motor running ...

Phasor is a complex number representing the amplitude and phase ... A complex number times its conjugate the square of its magnitude. Complex Numbers Operation ...

... power is delivered to the load at a specified interface voltage magnitude ... sum of the complex power absorbed by each two-terminal element in the circuit. ...

The frequency of induced current in the rotor winding. A) Rotor at stand still ... voltage in short circuited rotor winding. Note: (When the rotor is stationary) ...

The concepts of series/parallel equivalence, voltage/current division and source ... The voltage source is transformed to a current. Source by breaking the ...

Purpose: Used to separate the power supplies of the microcontroller and the relays ... fluctuation in the relay circuit that may get linked to the logic power supply ...

Voltage Equations in Arbitrary Reference Frame Variables ... variables may be obtained by substituting the equations of transformation in ...

EE 647. Digital Signal Processor (DSP) Based Control of Electric Machines ... 1)To learn the basic operation of stepper motor and ... center taped winding ...

... Rotating Magnetic Field ... Magnetic field waves are rotating in a counterclockwise direction. ... Machine acting as generator. For the previous figure: ...

Rotor has armature windings. DC voltage is applied to the rotor ... How can we vary armature (applied) voltage ? Ans: PWM Technique ...

speed of rotor rotating ... (x,t) of the stator rotates at sync mech speed with respect ... Let's define the slip as. or fr=sf. Note: sync in rad/sec. m in rad/sec ...

Symbols in Electrical Engineering: Numerical values in engineering range over many orders of magnitude. ... Power dissipation of an electrical device is 200W. ...

2.) and are rotating in the same direction. ... Calculate the efficiency of the motor. 7-8 Example ind-3. n. m. P. 0. s=.06. 15. Solution ...

Fig.2 Axis of 2-pole, 3-phase symmetrical induction. 7 ... a reference frame with an angular speed of rotating q-d axis can be written as ... Axes Transformation ...

q-d Axis Voltage Equations. q-d axis voltage equations can be written by ... q-d Axis Voltage Equations. Fig. 2. A 2-pole 3-phase symmetrical ... Axis ...

Formulate node-voltage equations by inspection. Example 3. Solving Linear Algebraic Equations. Assume the node-voltage equations as: ...

Delta connected. Resistive load. R- 4.5 ohms. Load #1 ... Air Gap. Note: If R || X. c. m. Very Large (open circuit), then I is approximately equal to zero. ...

Active Device: Device that are dependent on an external power supply to operate ... (CCCS) Voltage Controlled Current Source (VCCS) Dependent Sources ...

In active mode collector current is controlled by base current and base-emitter ... The device acts like an open circuit between collector and emitter: Circuit model: ...

If voltmeter measures (v1-v2) then H2 is positive i.e. dotted terminal, and x2 ... If voltmeter reads, VM =V1 V2=480 120 =600V. Then H2 and X1 are the dotted terminals ...

Compute the per-unit and percent impedance of the lamp. Give the p.u. ... When performing calculations in a power system, every per-unit value must be ...

Figure 2 shows the plot of equation (3) for the values of slip from zero to unity. ... Equation (5) shows that the slip at which the maximum torque occurs is ...

Arbitrary Reference Frame. Consider stator winding of a 3-phase machine ... synchronoulsy rotaing reference frame. ... to the arbitrary reference frame. ...

Stator windings are assumed to be sinusoidally distributed ... rotating mmfs (These motors are used in clocks and some other turntables) ...

Digital Signal Processor (DSP) Based Control of Electric Machines and Drives Laboratory ... in noisy environments - automobile or industrial environments (as ...

... from a north pole of a magnet into the air toward the south pole (stator winding ... enters the air gap from the north pole of the magnetic system of the rotor. ...

The Variations and Deviations in the Use of Tympanostomy Tubes for Children with Otitis Media ... bilateral otitis media with effusion that has lasted a ...

... the direction of maximum positive mmf produced by each winding taken individually. Positive mmf is assumed to be directed across the gap from rotor to stator. ...

EE 647. Digital Signal Processor (DSP) Based Control of Electric Machines and Drives ... EV registers occupy a range of 16-bit memory addresses in data memory space ...