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Sve o frekventnim regulatorima

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Na stranici Energetika je postavljena nova stručna knjiga proizvođača opreme DANFOSS: Fact Worth Knowing about Frequency Converters. Knjiga je dostupna za download i potpuno je besplatna. Ova knjiga pruža jednostavan uvod u rad i konstrukciju  frekventnog pretvarača i AC motora spojenog na njega. Osnovni elementi knjige opisani su u četiri glavne celine:

  1. AC Motori
  2. Frekventni pretvarači
  3. Frekventni pretvarači i motori
  4. Zaštita i sigurnost pri korišćenju frekventnih pretvarača

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Sadržaj knjige:

CHAPTER 0: INTRODUCTION
Advantages of infinitely variable speed regulation
Control or regulation?

CHAPTER 1: 3-PHASE AC MOTORS
Asynchronous motors
Stator
Magnetic field
Rotor
Slip, torque and speed
Efficiency and losses
Magnetic field
Equivalent circuit diagram
Speed change
Changing the number of poles
Slip control
Frequency regulation
Motor data
Types of load
Synchronous motors
Reluctance motors

CHAPTER 2: FREQUENCY CONVERTERS

The rectifier
Uncontrolled rectifiers
Controlled rectifiers
The intermediate circuit
The inverter
Transistors
Pulse-Amplitude-Modulation (PAM)
Pulse-Width-Modulation (PWM)
Sinus-controlled PWM
Synchronous PWM
Asynchronous PWM
Control circuit
Danfoss control principle
VVC control principle
VVCplus control principle
Field-oriented (Vector) control
V/f characteristic and flux vector control
VVCplus slip compensation
Automatic Motor Adaptation (AMA)
Automatic Energy Optimisation (AEO)
Operating at the current limit
Protective functions
The microchip in general
Computers for frequency converters
Communication
Serial communication
Manufacturer-independent communication

CHAPTER 3: FREQUENCY CONVERTERS AND MOTORS

Operational conditions of the motor
Compensations
Load-dependent and load-independent compensation parameters
Slip compensation
Motor torque characteristics
Current limit
Requirements from advanced digital frequency converters
Sizing a frequency converter
Load characteristics
Current distribution in the frequency converter (cos j of the motor )
Dynamic brake operation
Reversing
Ramps
Monitoring
Motor load and motor heating
Efficiencies

CHAPTER 4: PROTECTION AND SAFETY

Extra protection
Reset to zero (TN system)
Earthing (TT system)
Protective relay
Electromagnetic compatibility
Basic Standard
Generic Standard
Product Standard
Dispersal of interference
Coupling
Hard-wired dispersal
Mains supply interference
Transients/over-voltage
Radio-frequency interference
Screened/armoured cables
Power Factor compensation units
Selection of a frequency converter for variable speed drives

APPENDIX I: GENERAL MECHANICAL THEORY

Straight-line motion
Rotating motion
Work and power

APPENDIX II: GENERAL AC THEORY

Power factor
3-phase AC current
Star or delta connection

APPENDIX III: GENERALLY USED ABBREVIATIONS

LITERATURE REFERENCES

INDEX

.

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Comments

2 Responses to “Sve o frekventnim regulatorima”
  1. ecsanyi says:

    Knjiga 'Fact Worth Knowing about Frequency Converters' se nalazi na poslednjem mestu dodatih knjiga.

  2. Wilson says:

    Treba mi teorija, radim zavrsni iz frekventnih regulatora (: