—This paper presents dc-dc converters based on multi switched capacitor cells for high boost. The essence in a grid connected micro-inverter is dc-dc converter; it is employed to boost the low PV voltage, which varies from 35-45 VDC in order to increase the bus voltage to be 380-400 VDC. Inverter utilizes this high bus voltage to match the grid voltage, which is 240 VAC at 60Hz frequency. For conventional boost converter, this requires high boost ratio that is beyond its practical capability.Furthermore, the high duty ratio needed will result in high components stress that suppresses the overall efficiency of the converter. To overcome aforementioned problems, this paper suggests the integration of multiple switched-capacitor cells (SCs)with conventional boost and buck-boost converters to achieve high dc-link voltage. Results based on 100 W laboratory prototype are given to verify the theoretical analysis.
|Title of host publication||Australasian Universities Power Engineering Conference 2017 (AUPEC 2017): Proceedings|
|Number of pages||5|
|Publication status||Published - 30 Sep 2017|
|Event||Australasian Universities Power Engineering Conference 2017: AUPEC2017 - Melbourne & Olympic Parks, Melbourne, Australia|
Duration: 19 Nov 2017 → 22 Nov 2017
|Conference||Australasian Universities Power Engineering Conference 2017|
|Period||19/11/2017 → 22/11/2017|