One-power IC with MPPT design

Shengzhi Xu; Ian Chu; Gengshen Zhao; Qingzhang Wang

doi:10.1117/12.753920

4 January 2008 One-power IC with MPPT design

Shengzhi Xu, Ian Chu, Gengshen Zhao, Qingzhang Wang

Proceedings Volume 6841, Solid State Lighting and Solar Energy Technologies; 684113 (2008) https://doi.org/10.1117/12.753920
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

When proceed photovoltaic power system design, engineer needs prepared model of PV cells to evaluate system response, capability performance, and stability, the DC model is not enough, but an accuracy AC model plays a big role. This paper talks first about the AC model of PV cells, and DC model is also introduced in simple. There is a PV controller example explaining the steps to do system simulation in this paper. Two equivalent circuit models are implemented with mixed-signal language verilog-a, one hardware language easy to use and having good speed and high accuracy. Both of two models include solar cell arrays, one buck switched mode DC-DC converter, and the maximum power point tracking algorithm. The difference between them is that Solar cell in one of two models is with ac small signal parameter, another is without. The simulation result is given in comparison. This paper's work shows that ac parameter plays large role in switch-mode PV power system, especially when the switch frequency is higher than 100kHz.

Citation Download Citation

Shengzhi Xu, Ian Chu, Gengshen Zhao, and Qingzhang Wang "One-power IC with MPPT design", Proc. SPIE 6841, Solid State Lighting and Solar Energy Technologies, 684113 (4 January 2008); https://doi.org/10.1117/12.753920

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