ABSTRACT A Study on the New Current Sharing Control of PWM Converters in Parallel Operation By Nam-Ju Park Under the supervision of Prof. Dong-Seok Hyun, Ph.D.
Dept. of Electrical Engineering The Graduate School of Hanyang University
Recently, modern electrical equipment consumes more and more power because they have various functions and complexity in systems. In order to cope with high power consumption, usually PWM converters are operated in parallel instead of using one PWM converter having a big power capability. Parallel operation of PWM converter has many advantages over single operation of PWM converter such as various combination of output voltage, distribution of power, standardization of design, and easiness of heat dissipation. With the increment of power consumption, problems caused by unbalance between PWM converters become severe due to the parasitic components in the converter circuit, which considerably deteriorates the reliability of the system. Hence, it is highly demanded that the currents in each converter should be shared in accordance with the power capability of each converter.
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