Abstract
Dual inverter fed induction motor drive-in open-end winding gives more advantages than multilevel inverter fed induction motor drives. For better quality of output voltage with low common mode voltage (CMV), in this paper analysis of coupled and decoupled PWM techniques for open end winding induction motor are carried. The analysis is carried in MATLAB/simulink environment for vector controlled open end winding induction motor drive. The performance of drive and PWM techniques are evaluated both in transient, steady state and loaded conditions.
Highlights
Multilevel inverter fed induction motor drives are popular for hybrid electric vehicles and ship propulsion applications [1]-[6]
The dual inverters are operated from the isolated individual DC sources which are readily available in electric vehicles and ship propulsion applications
PWM techniques for dual inverter fed open end winding induction motor drive were evaluated in vectorcontrolled environment
Summary
Multilevel inverter fed induction motor drives are popular for hybrid electric vehicles and ship propulsion applications [1]-[6]. Because of presence of two 2level inverters, the PWM techniques can be derived either by treating both the inverters as a single unit or each independently as a separate unit. Based on this the PWM techniques for dual inverters are classified as coupled and decoupled PWM techniques. The drives are employed with vector or direct torque control techniques [14]-[20] In both the techniques torque and flux are independently controlled as of a DC motor. PWM techniques for dual inverter fed open end winding induction motor drive were evaluated in vectorcontrolled environment
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