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This paper proposes a general method of sizing the inverter for a PV system. The method evaluates effects of PV incentive policies, inverter efficiency curves, and inverter protection schemes on optimum inverter sizing through system-level cost analysis. Specifically, different scenarios of PV incentives are discussed and compared to show that the optimal inverter size varies notably by location and...
A novel built-in jitter characterization architecture combining quantization noise shaping and a partial Vernier delay structure is proposed for high resolution jitter measurement. The effective resolution is optimized at the system level as well as the circuit level. Using 90nm CMOS technology, an area of 0.008mm2 is occupied. The power consumption is 1.85mW. An effective resolution of 1.5ps is achieved.
This paper investigates the time behavior of over-irradiance events in which the photovoltaic (PV) array outputs more power than the rated power of the inverter. A new dynamic interpretation of such events is proposed and is compared to the conventional static viewpoint. Facts revealed under such dynamic view may lead to new guidelines for system integrators and inverter designers in both sizing and...
In order to obtain good performance for inverters and to solve the problem of time delay in digital control, a novel dual-loop control based on state observer with repetitive compensation is proposed. Dual-loop control for PWM inverter can achieve fast dynamic response and inhibit nonlinear load disturbances while observer can solve the problem of duty-cycle regulation caused by sampling and computing...
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