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The current source inverter (CSI) has some application restrictions, especially for the power efficiency problem. The H7 current source inverter is a promising topology since it provides a shunt-connected switching path and significantly reduce the power dissipation. This paper reviews the already published H7 CSI configuration character with its modulation strategy in theory and proposes an optimal...
This paper proposes an integrated power conversion system in electric vehicle using modular multilevel converter, whose modular structure could manage the integrated battery cells to simplify the traditional battery manage system (BMS) meanwhile provide the motor driving function and battery charging function without using additional hardware. The all-in topology could therefore maximize the capacity...
This paper presents a novel dead-time elimination method for operating nine-switch converter. The proposed method assumes unique switching cells of nine-switch converter to operate under several subintervals during a fundamental period. Due to the unidirectional conduction characteristics of switching cell, the nine-switch converter can operate without dead-time protection. For a special subinterval...
Solar energy generation systems, or any renewable systems, usually include energy storages, local dc loads and grid-tied dc-ac inversion stages. Almost always, these entities have their own power converters for processing the intermediate solar energy transferred through the systems. Having individual converters does have some advantages like more flexible individual control and easier design, but...
Nine-switch converter is a recent reduced semiconductor topology proposed in place of the back-to-back 12-switch converter. Like its precedence, the nine-switch converter can either operate at a single common frequency (CF) or different frequencies (DFs) at its two sets of three-phase terminals, but because of its reduced-switch configuration, some compromises cannot be avoided. In particular, the...
This paper presents the optimal pulsewidth modulation (PWM) schemes suitable for controlling a nine-switch inverter. Modulation wise, references with smallest offsets added are preferred for common frequency in-phase operation because of its lowest influence in harmonic performance. But for the common frequency operation with phase shift needed, traditional zero sequence harmonic offset cannot increase...
For aeronautical static converter then three-phase unbalanced load, made use of four-leg three-phase main circuit topology solution based on abc coordinates of the three-dimensional vector control, so that the switch to select the vector and duty More than a simple calculation, a significant reduction in the modulation of the complexity of the algorithm. The simulation results show the correctness...
Matrix converter double space vector modulation strategy the need for sine, arctangent function calculation and look-up table, the calculation is more complicated, this article on the matrix converter using virtual rectifier switching function method, and the use of the average virtual inverter voltage method, respectively, derived from the virtual rectifier and inverter virtual reference voltage...
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