TY - MGZN
DO - 10.1109/TIE.2017.2767541
TI - Single-carrier phase-disposition PWM techniques for multiple interleaved voltage-source converter legs
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.
AB - Peer Reviewed
AB - Postprint (published version)
Y1 - 2017
UR - http://ieeexplore.ieee.org/document/8086191/
UR - http://hdl.handle.net/2117/114230
VL - 65
IS - 6
EP - 4466
SP - 4474
T2 - IEEE transactions on industrial electronics
PB - Institute of Electrical and Electronics Engineers (IEEE)
AU - Konstantinou, G.
AU - Capella, G.
AU - Pou, J.
AU - Ceballos, S.