ELECTRIC DRIVES

ELECTRIC DRIVES
Author: N. K. DW
Publisher: PHI Learning Pvt. Ltd.
Total Pages: 326
Release: 1999-01-01
Genre: Technology & Engineering
ISBN: 9788120314924

This book provides a comprehensive introduction to the fundamental concepts of electric drives and is eminently suited as a textbook for B.E./B.Tech., AMIE and diploma courses in electrical engineering. It can also be used most effectively by all those preparing for GATE and UPSC competitive examinations, as well as by practising engineers. The topics, which range from principles and techniques to industrial applications, include characteristic features of drives, methods of braking and speed control, electromagnetic and solid state control of motors, motor ratings, transients in drive systems, and operation of stepper motors.

Solid State Drives

Solid State Drives
Author: P. Pugazhendiran
Publisher: Ugam Books
Total Pages: 136
Release: 2021-02-05
Genre: Technology & Engineering
ISBN: 9788194482536

UNIT I - DRIVE CHARACTERISTICS Electric drive - Equations governing motor load dynamics - steady statestability - multi quadrant Dynamics: acceleration, deceleration, starting &stopping - typical load torque characteristics - Selection of motor.UNIT II - CONVERTER / CHOPPER FED DC MOTORDRIVESteady state analysis of the single and three phase converter fed separatelyexcited DC motor drive- continuous conduction -Time ratio and current limitcontrol - 4 quadrant operation of converter / chopper fed drive-Applications.UNIT III - INDUCTION MOTOR DRIVESStator voltage control-V/f control- Rotor Resistance control-qualitativetreatment of slip power recovery drives-closed loop control-- vector control-Applications.UNIT IV - SYNCHRONOUS MOTOR DRIVESV/f control and self-control of synchronous motor: Margin angle control andpower factor control - Three phase voltage/current source fed synchronousmotor- Applications.UNIT V - DESIGN OF CONTROLLERS FOR DRIVESTransfer function for DC motor / load and converter - closed loop controlwith Current and speed feedback-armature voltage control and fieldweakening mode - Design of controllers; current controller and speedcontroller- converter selection and characteristics.

Inside Solid State Drives (SSDs)

Inside Solid State Drives (SSDs)
Author: Rino Micheloni
Publisher: Springer
Total Pages: 495
Release: 2018-07-11
Genre: Science
ISBN: 9811305994

The revised second edition of this respected text provides a state-of-the-art overview of the main topics relating to solid state drives (SSDs), covering NAND flash memories, memory controllers (including booth hardware and software), I/O interfaces (PCIe/SAS/SATA), reliability, error correction codes (BCH and LDPC), encryption, flash signal processing and hybrid storage. Updated throughout to include all recent work in the field, significant changes for the new edition include: A new chapter on flash memory errors and data recovery procedures in SSDs for reliability and lifetime improvement Updated coverage of SSD Architecture and PCI Express Interfaces moving from PCIe Gen3 to PCIe Gen4 and including a section on NVMe over fabric (NVMf) An additional section on 3D flash memories An update on standard reliability procedures for SSDs Expanded coverage of BCH for SSDs, with a specific section on detection A new section on non-binary Low-Density Parity-Check (LDPC) codes, the most recent advancement in the field A description of randomization in the protection of SSD data against attacks, particularly relevant to 3D architectures The SSD market is booming, with many industries placing a huge effort in this space, spending billions of dollars in R&D and product development. Moreover, flash manufacturers are now moving to 3D architectures, thus enabling an even higher level of storage capacity. This book takes the reader through the fundamentals and brings them up to speed with the most recent developments in the field, and is suitable for advanced students, researchers and engineers alike.

Solid-State AC Motor Controls

Solid-State AC Motor Controls
Author: Sylveste Campbell
Publisher: CRC Press
Total Pages: 249
Release: 2020-10-28
Genre: Technology & Engineering
ISBN: 1000105598

This book discusses the current status of the solid-state AC motor controls. It treats most technical phenomena in the empirical sense, with emphasis on input-output characteristics of solid-state controls, oriented at all times to their effect on the performance of the AC motor.