Research of IMC-Fed BLDCM Servo System Based on Fuzzy Control - Intelligent Computing for Sustainable Energy and Environment - page 19

Research of IMC-Fed BLDCM Servo System
Based on Fuzzy Control
Hongchen Liu, Lei Liu, and Lishan Sun
School of Electrical Engineering and Automation, Harbin Institute of Technology,
Harbin, HLJ 150001, P.R. China
{ fenmiao,sunlishan } @hit.edu.cn, [e-mail]
Abstract. This paper presents a control scheme designed for Brushless
DC Motor (BLDCM) drive. The proposed scheme is fed by Indirect Ma-
trix Converter (IMC). The IMC works as an AC-AC power supply for
BLDCM. The scheme includes speed servo system and position servo
system. Firstly, the advantages and working principles of IMC are intro-
duced, showing that IMC is a superior power converter. Then, the IMC-
fed BLDCM servo system is designed. The command speed or command
position for BLDCM could be tracked accurately and respectively. In
the position servo system, a fuzzy P controller is employed as the posi-
tion regulator. From the simulation results, it is illustrated that IMC-fed
BLDCM servo system has satisfed performance of tracking the command
speed or command position.
Keywords: IMC, BLDCM, servo, fuzzy P controller.
1 Introduction
The concept of Two Stage Matrix Converter, which is also called Indirect Ma-
trix Converter (IMC), was first proposed in 2001 [1]. IMC contains rectifier stage
and inverter stage. It has the similar configuration compared with traditional fre-
quency converter except that the IMC's rectifier stage contains six bidirectional
switches and there is no energy storage element. We can utilize the matured
control strategy in IMC. Therefore, IMC is a promising matrix converter in the
future.Most papers on MC-fed variable speed drive system are about IM drive.
In paper [2], a vector-controlled closed-loop for MC-fed IM drive is proposed
in electric vehicle applications. In paper [3], direct torque control of six-phase
IM drive based on MC is proposed. Some papers focus on the improvement of
MC-fed IM drive. Paper [4] presented predictive torque control for MC-fed IM
drive. Papers on MC-fed PMSM drive system could also be seen. Paper [5] pre-
sented MC-fed PMSM drive system using vector control technique. Besides, more
advanced control strategies were usedinMC-fedPMSMdrivesystem,suchas
speed anti-windup PI strategies [6], nonlinear adaptive back-stepping controller
[7], sliding-mode controller [8]. Paper [9] designed a sensorless scheme for MC-fed
PMSM drive system. In addition, MC could also be applied in three-phase util-
ity power supply [10], PMSG wind turbine generation [11], unified power-flow