Losses, Efficiency, and Power Factor

Slides:

Advertisements

Similar presentations

3. Slip and Rotor frequency of IM

Advertisements

The stator winding are supplied with balanced three-phase AC voltage, which produce induced voltage in the rotor windings. It is possible to arrange the.

Chapter 4 Three-Phase Motors

ELECTRICAL POWER AC MOTOR & DC MOTOR.

Induction Motor •Why induction motor (IM)?

ENERGY EFFICIENT INDUCTION MOTORS By JINTU GEORGE Edited By Sarath S Nair

ECE 4411 Dynamic Braking of Induction Motors Slow down a machine by converting kinetic energy stored in the rotating mass to heat energy in the rotor and/or.

1 Institute of Mechatronics and Information Systems Induction (asynchronous) machine.

Electro Mechanical System

ECE 4411 Quadrature-Field Theory and Induction-Motor Action Single-phase induction motor cannot develop a rotating magnetic field Needs an “auxiliary”

ECE 4411 Induction Generators Same basic construction as squirrel-cage induction motors Drive at a speed greater than the synchronous speed Not started.

ECE 4411 Mechanical Power and Developed Torque Total power across the air gap is mechanical power plus power lost in the rotor conductors.

ECE 4411 Interpreting the Circle Diagram. ECE 4412 Graphical Interpretation The blocked rotor voltage, E BR, is assumed constant. P gap =E BR I r cosθ.

ECE 4411 Air-Gap Power The power transferred electromagnetically across the air gap between the stator and rotor is called the “air-gap power”, or “gap.

Hysteresis Motors Stator Rotor same as for induction motor

Complete Equivalent Circuit for the Shunt Motor

Transformer Losses & Efficiency

Chapter 15 DC Machines.

PMSM Design and Loss Analysis Liping Zheng 07/23/2003.

PMSM Design Liping Zheng 06/06/2003.

PMSM at the Cryogenic Temperature

Example 1 A 9375 kVA, 13,800 kV, 60 Hz, two pole, Y-connected synchronous generator is delivering rated current at rated voltage and unity PF. Find the.

Energy Efficient Motors. Upgrading even one, 0.75 kW motor to a Premium Efficient motor gives double benefit of Energy Savings and Carbon credits....

Radial Flux PMSM Design and Optimization Liping Zheng 02/21/2003.

AUTOMOTIVE CHARGING SYSTEMS CHAPTER 7 PURPOSE OF CHARGING SYSTEM b CONVERT MECHANICAL ENERGY INTO ELECTRICAL ENERGY b RECHARGE BATTERY b PROVIDE POWER.

Dr. Longya Xu The Ohio State University April, 2010.

FINAL EXAM WILL BE WEDNESDAY APRIL 29 FROM 10:00AM – 12:00PM IN THIS ROOM DISREGARD THE SATURDAY DATE ON THE FINAL EXAM MATRIX.

Inductance and Inductive Reactance Inductance - the characteristic of an electrical ckt that oppose any change in current Symbol is “L” measured in a Henry.

EET 306 ELECTRIC MACHINES Syafruddin Hasan.

Transformer Transformer is used to increase or decrease AC Voltage (potential difference). Transformer is consisted of a soft iron core, a primary coil,

Motors and Generators.

Induction Motors Equations, Performance, Electrical Equivalent Circuits.

Magnetic field due to an electric current

ELEN 3441 Fundamentals of Power Engineering Spring Lecture 6: AC machinery fundamentals Instructor: Contact: Office Hours: Class web site:

A Presentation On Construction Of Turbo Generator

Problem # 5-7 A 3-phase, 8-pole, induction motor, rated at 874rpm, 30hp, 60Hz, 460V, operating at reduced load, has a shaft speed of 880 rpm. The combined.

A Presentation on construction of Turbo Generator.

SMJE 2103 Induction Motor.

1 Figure 17.1 A Rotating Electric Machine. 2 Configurations of the three types of electric machines Table 17.1.

Induction Motor (Asynchronous Motor)

SMJE 2103 Induction Motor.

Lesson 12a: Three Phase Induction Motors

INDUCTION MOTORS Output Equation Q(kVA) = m Eph Iph 10-3 = m (4.44f Φm Tph Kw ) {(ac πD)/( m 2Tph )} = 4.44 (pNs/120) (Bave π DL/p) Kw (ac πD/ 2) x 10-3.

Equations, Performance, Electrical Equivalent Circuits

DC and AC Charging System Principles

Unit – III Three phase Induction Motor

EMT462 Electrical System Technology

Stepper Motors BJ Furman 23MAR2011.

Induction motor control

Three Phase Induction Motors

SPEED TORQUE CHARACTERSTICS OF 3 PHASE INDUCTION MOTOR

INDUCTION MOTOR.

Dr. Zainal salam; Power Electronics and Drives (Version 2),2002, UTMJB

Induction Motor. Induction motor Main parts are Stator Rotor.

Energy Conversion and Transport George G. Karady & Keith Holbert

Three Phase Induction Motors

בטיחות בתעשייה בהיבט חברות הביטוח

DC MACHINES 15/11/2016.

Motors 3 phase Induction Motor.

Permanent Magnet Synchronous Motors

SINGLE PHASE INDUCTION MOTOR.

Air-Gap Power The power transferred electromagnetically across the air gap between the stator and rotor is called the “air-gap power”, or “gap power”.

INTRODUCTION OF ELECTRICAL MACHINES

Electrical Machines (EELE 3351)

Unit-1 Transformer.

Electric Machine Design Course

By Ashvani Shukla Manager(C&I) BGR ENERGY

Presentation transcript:

Losses, Efficiency, and Power Factor Core losses hysteresis and eddy-current losses in the stator and the rotor power losses (I2R losses) in the stator windings stator copper losses, also called stator conductor losses ECE 441

Net Power Crossing the Air Gap Power-Flow Diagram ECE 441

Look at Total Power Loss ECE 441

Useful Shaft Power Output ECE 441

Efficiency and Power Factor Efficiency is the ratio of useful power out to the total power in. Power Factor is the ratio of active power to apparent power. ECE 441