By Jens Weidauer, Richard Messer
From the perspective of a consumer this e-book covers all points of contemporary electric drives. it's geared toward either clients, who desire to comprehend, layout, use, and retain electric drives, in addition to experts, technicians, engineers, and scholars, who desire to achieve a accomplished evaluation of electric drives.
Jens Weidauer and Richard Messer describe the rules of electric drives, their layout, and alertness, via to complicated automation options. within the procedure, they introduce the complete spectrum of force recommendations on hand and their major purposes. a distinct point is the combo of a number of drives to shape a force process, in addition to the combination of drives into automation solutions.
In basic and transparent language, and supported with many diagrams, advanced relationships are defined and awarded in an easy-to-understand approach. The authors intentionally keep away from a complete mathematical therapy in their topic and as an alternative concentrate on a coherent description of the lively rules and relationships. hence, the reader should be capable of comprehend electric drives as an entire and to unravel drive-related difficulties in daily specialist lifestyles.
Read or Download Electrical Drives: Principles, Planning, Applications, Solutions PDF
Best engineering books
Be aware: high quality local PDF. info refers back to the textbook that accompanies this resolution guide.
The new version of energy process research AND layout presents scholars with an advent to the elemental innovations of strength structures in addition to instruments to assist them in utilizing those abilities to genuine global events. actual thoughts are highlighted whereas additionally giving beneficial cognizance to mathematical thoughts. either idea and modeling are built from basic beginnings as a way to be effortlessly prolonged to new and complicated occasions. The authors comprise new instruments and fabric to help scholars with layout matters and replicate fresh tendencies within the box.
KurzbeschreibungAn In-Depth advisor to Water and Wastewater Engineering This authoritative quantity bargains finished assurance of the layout and building of municipal water and wastewater amenities. The booklet addresses water remedy intimately, following the movement of water throughout the unit tactics and coagulation, flocculation, softening, sedimentation, filtration, disinfection, and residuals administration.
The overseas Council on platforms Engineering (INCOSE) defines platforms Engineering as an interdisciplinary procedure and capacity to permit the belief of profitable platforms. Researchers are utilizing intelligence-based thoughts to help the practices of platforms engineering in an cutting edge approach. This study quantity encompasses a number of contributions by means of topic specialists to layout greater platforms.
This ebook constitutes the lawsuits of the 3rd firm Engineering operating convention (EEWC), held in Luxembourg in the course of might 13-14, 2013. EEWC goals at addressing the demanding situations that sleek and intricate organisations are dealing with in a speedily altering global. The members of the operating convention percentage a trust that facing those demanding situations calls for rigorous and clinical suggestions, concentrating on the layout and engineering of firms.
- USPAS Accelerator Power Systems Engineering [presentation slides]
- Advances in Bioprocess Engineering
- Wide-Area Data Network Performance Engineering by Robert Cole (1999-12-30)
- Surface Tension in Microsystems: Engineering Below the Capillary Length
- Advances in Enterprise Engineering V: First Enterprise Engineering Working Conference, EEWC 2011, Antwerp, Belgium, May 16-17, 2011. Proceedings
- Engineering Quantum Mechanics
Extra info for Electrical Drives: Principles, Planning, Applications, Solutions
As thyristors can only conduct current in one direction, the current flow is 1. starting from a supply phase (in the Figure L1) 2. e. conducting, thyristor in the upper half-bridge (in the Figure T1) 3. continuing via the motor 4. continuing via a triggered thyristor in the lower half-bridge (in the Figure T6) 5. and back to another supply phase (in the Figure L3). Two supply phases and each one thyristor from the upper half-bridge and lower half bridge are therefore always participating in the current flow.
4 Variable-speed drives using DC motors The following rule applies: A positive excitation current and a positive armature current generate a positive torque and accelerate an unloaded motor in the positive direction (clockwise when looking at the motor shaft). A negative excitation current and a negative armature current also generate a positive torque and also accelerate an unloaded motor in the positive direction. If the polarities of the excitation and armature currents are different, then an unloaded motor will accelerate in the negative direction.
18 Circuit configuration of a DC motor with series-wound characteristic Of particular interest here is that the armature current flows through the excitation winding. The resulting magnetic field in the motor is no longer constant, but dependent on the motor load. This leads to the characteristic operating behaviour of the series-wound motor. 19). Series-wounds motors respond very “soft” to changes in load. Under no-load conditions, only the remanent flux of the motor is active. The air-gap flux is very small, and not until the motor speed is very high does it induce a motor voltage Vm large enough to compensate the armature voltage Va.