Power Supply in Telecommunications de Hans Gumhalter

Power Supply in Telecommunications

Hans Gumhalter

en Limba Engleză Paperback – 22 ian 2012

An important part of any communication system is its power supply system. The smooth operation of all communications depends on the quality of the power supply and on the operational reliability of the increasingly complex equipment and devices used for this purpose.
This book describes current power supply technologies, it explains the circuit techniques using easy-to-understand examples and illustrations. Also covered are automatic control, grounding and protection techniques as well as the design of battery and grounding installations.
The book is conceived as a practical guide for those involved in planning installing, comissioning and servicing telecommunication systems, but it is also useful as an introduction to the subject.

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Cuprins

1 General and Introduction.- 1.1 Functions and Requirements.- 1.2 Basic Types of Power Converter.- 1.3 Elements of a Power Converter.- 1.4 Energy Storage.- 1.5 Primary Power Sources.- 1.6 Power Supply Systems.- 1.7 UPS Systems.- 1.8 Mains-independent Hybrid Power Supply Systems.- 1.9 Historical Review.- 2 Requirements of Telecommunications Systems on the Power Supply.- 2.1 D.C. Power Supplies.- 2.2 A.C. Power Supplies.- 3 Operating Modes of a Direct Current Power Supply System.- 3.1 Rectifier Mode.- 3.2 Battery (Charge-Discharge) Mode.- 3.3 Standby Parallel Mode.- 3.4 Changeover Mode.- 3.5 Combined Standby Parallel and Changeover Mode with Compensator for Additional Voltage.- 3.6 Assignment of Operating Modes to Communications Systems.- 3.7 Further Modes.- 4 Operating Modes of an Alternating Current Power Supply System.- 4.1 Mains Mode.- 4.2 A.C. Changeover Mode.- 4.3 Uninterruptible a.c. Changeover Mode.- 5 Public Mains.- 5.1 Type of Voltage.- 5.2 Tolerances of the a.c. Supply Voltageand Supply Frequency.- 5.3 Wave Shape and Distortion Factor of the a.c. Supply Voltage.- 5.4 Power Failures.- 6 Energy Storage.- 6.1 Stationary Lead-Acid Batteries.- 6.2 Stationary Alkaline Batteries.- 6.3 Lithium Primary Batteries.- 6.4 Design Pointers.- 6.5 Maintenance.- 6.6 Installation of Batteries.- 7 Basic Circuits and Process Control.- 7.1 Rectifier Circuits.- 7.2 Stabilizing and Control Procedures.- 7.3 Rectifying with Stabilization.- 7.4 D.C./D.C. Conversion with Stabilization.- 7.5 Inverting with Stabilization.- 8 Applications of Control Systems in Power Supply Devices.- 8.1 General.- 8.2 The Operation of Open- and Closed-loop Control Systems.- 8.3 Components of the Closed-loop Control System.- 8.4 Operational Amplifiers in the Regulator.- 8.5 Controlled Rectifiers with Thyristor Power Section.- 8.6 Controlled Power Supply Equipment with Transistor Power Section.- 9 Switching Mode Power Supplies.- 9.1 Type 48 V/12 A (60 V/10 A).- 9.2 Type 48 V (60 V)/30 A and 100 A.- 9.3 Type 48 V/120 A (60 V/100 A).- 9.4 Type 48 V (60 V, 67 V)/50 A and 100 A.- 9.5 Power Supply Controller.- 10 Thyristor Controlled Rectifiers.- 10.1 Type 48 V (60 V)/200 A.- 10.2 Type 48 V (60 V)/1000 A.- 10.3 Assemblies.- 10.4 Technical Data.- 11 Magnetically Controlled Rectifiers.- 11.1 Types 24 V to 220 V/10 A to 400 A.- 12 D.C./D.C. Converter.- 12.1 Type 50 W to 200 W.- 12.2 Type 750 W.- 13 D.C./A.C. Inverters.- 13.1 Type 2.5 kVA.- 13.2 Type 15 kVA (3x5 kVA).- 14 Static UPS Systems.- 14.1 Type 10 to 500 kVA.- 15 Diesel Generating Sets.- 15.1 Standby Power Supply System with Fully Automatic Mains Failure Control.- 15.2 Mains Independent Island Power Supply System with Fully Automatic Alternating Operation.- 15.3 Fully Automatic Electronic Control System.- 15.4 Fuel Distribution System.- 15.5 Lubrication Oil Distribution System.- 16 Special Features for Transmission System Power Supplies.- 16.1 Power Supply for Radio Link Apparatus.- 16.2 Power Supply for Ground Communication Stations forTelecommunications Satellites.- 16.3 Mains-Independent Power Supply Systems.- 17 Grounding and Potential Equalization.- 17.1 Protective Grounding.- 17.2 Functional Grounding.- 17.3 Functional and Protective Grounding.- 17.4 Selection and Design of Grounds and Grounding Systems.- 17.6 Protection against Overvoltage and Interference.- 18 Protective Measures.- 18.1 Protection by Disconnection or Indication.- 18.2 Protection without Disconnection or Indication.