MANUFACTURING OF A TRANSFORMER FOR CONVERTING 3-PHASE TO 6-PHASE ELECTRIC POWER SOURCE CHẾ TẠO MÁY BIẾN ÁP TẠO NGUỒN ĐIỆN 6 PHA

Abstract

Nowadays, due to its advantages such as better fault-tolerant performance, improved system reliability, better efficiency, lower power per phase, lower torque oscillation with better torque density, multiphase AC machine (with the phase-number is higher than 3) has been widely accepted and adopted for electric drive applications. However, multi-phase machine applications required to be powered from multiphase power source or drive system. Unfortunately, multi-phase power supply or drive system still has not been offered in commercial market. Thus, a 3 kVA transformer with a novel winding arrangement to have the ability to convert conventional 3-phase power supply input to 6-phase power source output for multiphase machine application has been investigated and manufactured at the Faculty of Electrical Engineering Technology, IUH, Vietnam. Testing on the transformer shows that it could supply a 6-phase output power with low high-order harmonics. Therefore, the multiphase transformer prototype is essential for testing multiphase machine application.