TY  - MGZN
AU  - Konstantinou, G.
AU  - Capella, G.
AU  - Pou, J.
AU  - Ceballos, S.
T2  - IEEE transactions on industrial electronics
Y1  - 2017
VL  - 65
IS  - 6
SP  - 4466
EP  - 4474
DO  - 10.1109/TIE.2017.2767541
UR  - http://ieeexplore.ieee.org/document/8086191/
AB  - Interleaved converter legs are typically modulated with individual carriers per leg and phase-shifted PWM (PS-PWM) as it facilitates current balancing amongst the legs. Phase-disposition PWM (PD-PWM), despite the better harmonic performance, cannot be directly used due to the resulting current imbalance that may damage the converter. This paper addresses the current sharing issue and proposes a single-carrier PD-PWM technique for multiple leg two-level converters based on a hierarchy scheme derived from current sorting algorithms. An extension of the proposed algorithm through a switching state feedback loop, limiting the average switching frequency, is also developed. In both cases, the load current is shared amongst the legs and the high-quality of the output voltages and currents is maintained while the circulating currents amongst the converter legs are kept to a minimum. Simulation results demonstrate the method for multiple interleaved legs as well as its current sharing capabilities for high-power applications. Experimental results from a low-power laboratory prototype validate the operation of the proposed approach.
PB  - Institute of Electrical and Electronics Engineers (IEEE)
TI  - Single-carrier phase-disposition PWM techniques for multiple interleaved voltage-source converter legs
ER  -