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The photovoltaic (PV) source simulators are widely used to test solar inverters, evaluate their control algorithms and study their grid integration issues in the laboratory settings. Many commercial programmable dc power supplies can be re-programed to be PV simulators. Due to the bulky output dc capacitors, the dynamic response and the bandwidth of these PV simulators are significantly limited, which,...
In this paper, a new space vector modulation (SVM) strategy is presented to reduce the output common-mode voltage (CMV) for direct matrix converters. This method modifies the traditional singular value decomposition modulation to enable the usage of switch vectors with 120° phase shift, then substitutes two of the corresponding switch states by an orientation switch state which connects every input...
Based on Matrix Converter-Permanent Magnet Synchronous Machine (MC-PMSM) speed regulator system simulation platform, this paper investigates the behavior and characteristics of MC-PMSM drive system under the condition of MC switch short-circuit faults. Two isolation strategies by utilizing semiconductors and high speed fuses for MC switch short-circuit faults are. Behavior of MC-PMSM drive system...
This paper presents a novel method to suppress neutral harmonic currents in three-phase four-wire power systems. The significant advantages include low cost, high reliability, good effectiveness, free of LC resonance and flexible installation location. Furthermore, under unbalanced loading, only harmonics in the neutral current are suppressed while the fundamental currents are not affected. In the...
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