Enhanced Torque Control and Reduced Switching Frequency in Direct Torque Control Utilizing Optimal Switching Strategy for Dual-Inverter Supplied Drive
作者： M Khairi Rahim , Auzani Jidin , Tole Sutikno , None
DOI: 10.11591/IJPEDS.V7.I2.PP328-339
关键词:
摘要: Direct Torque Control (DTC) of induction machine has received wide acceptance in many adjustable speed drive applications due to its simplicity and high performance torque control. However, the DTC using a common two-level inverter poses two major problems such as higher switching frequency (or power loss) larger ripple. These are inappropriate voltage vectors which selected among limited number available inverter. The proposed research aims formulate an optimal strategy Dual-Inverter Supplied Drive for performances DTC. By dual-inverter supplied, it provides greater can offer more options select most appropriate vectors. should able produce minimum slope but sufficient satisfy demands. identification is accomplished by equation rate change derived from equations. also introduces block modification error status responsible modify that determine look-up table, according motor operating conditions. improvements obtained follows; 1) minimization (reduce loss), 2) reduction Some were verified via experimentations.
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