A Simple Analog BLDC Drive Control for Electro-Mechanical Energy Storage System

Electro-Mechanical Batteries have important advantages compared with chemical batteries. High speed, slotless, external rotor, BLDC machines are used in these systems as Motor/Generator. It is used for converting the electrical energy to the rotational kinetic energy and vice versa. A bidirectional, variable frequency, variable amplitude, three phase BLDC drive needs for its operation in charge and discharge state. Generally, microprocessors are used for their control. But they are complex and expensive. In this paper, limitations, considerations, design and construction of a simple analog control circuit presents. Experimental results are verifying the design proses. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of University of Electronic Science and Technology of China (UESTC).