SPWM Variable Frequency Speed Regulation Application Technology (3rd Edition)

Author: Zhang Yanbin
Publisher:
Publish Date: 2005-07-01
Features: This book aims to assist electrical workers on production lines in selecting and using frequency converters, making it easy to understand. It first explains in depth the working requirements of power driving systems, the main theories of asynchronous motors, and the basic principles of AC-DC and AC-AC frequency converters. It also provides detailed explanations of the meanings of various functions in frequency converters, the basis and methods for pre-setting, the design and installation of frequency conversion speed control driving systems, and the applications of frequency converters in water pumps and fans, hoisting machinery and elevators, metal cutting machine tools and other machinery. It also delves into some issues encountered during use. This revision thoroughly rewrites Chapter 8, "Frequency Conversion Speed Control for Fans and Pumps," making it more practical; adds Chapter 12, which explores in depth the regeneration braking, power factor, torque control functions and their applications of frequency conversion speed control, the switching between frequency conversion and power frequency in constant pressure water supply systems, energy saving analysis of water pump units, handling of voltage and frequency mismatches, and the economic benefits of frequency conversion speed control; and enriches the content of other chapters. This book is suitable for frequency converter users and maintenance personnel, as well as for training purposes for frequency converter users.