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With the rapid development of photovoltaic (PV) power generation, technology of the grid-connected photovoltaic system becomes an important part of the photovoltaic power generation. Based on this background, grid connection techniques of T-Type three-level grid-connected inverter with an LCL filter is studied in this paper. The subject combines SPWM modulation strategy and dual current loop control...
A computing comparison of the conduction losses and switching losses between three-level and two-level inverters is proposed under SVPWM (Space Vector Pulse Width Modulation). The model of simulation is established. Partial results are verified in the experiment. This paper compares the efficiency of three-level and two-level inverter under SVPWM. The simulation and experimental results demonstrate...
Voltage differential feedback control system based on repetitive control is proposed in this paper. The scheme, which can improve the dynamic characteristic and steady state performance by Capacitor voltage as outer loop while its differential as inner loop without current sensor, is achieved on a three-phase PV inverter with TMS320F2808. Two different control strategies, traditional and repetitive...
In this paper we present a new multi-scale simulation scheme for next-generation electronic design automation (EDA) for nano-electronics. The scheme features a combination of the first-principles quantum mechanical calculation, semi-classical semiconductor device simulation, compact model generation and circuit simulation. To demonstrate the feasibility of the proposed scheme, we apply our newly developed...
The power losses of switch device are disadvantages that restrict the performance of a converter. Sub-harmonics PWM (SHPWM) is applied in modulation of three-level neural-point-clamped (3L-NPC) converter most widely. This paper analyzes and compares the conduction losses and switching losses for 3L-NPC converter for different SHPWM strategies (PDSPWM, PDTHIPWM, PDSVPWM and PDSLRPWM). The principle...
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