Nonlinear Voltage Control of Photovoltaic Z-Source Inverter DC-Link Based on Zero Dynamic Design

Yan Chen; Yong Zheng

doi:10.4028/www.scientific.net/AMR.827.270

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 827Nonlinear Voltage Control of Photovoltaic Z-Source...

Nonlinear Voltage Control of Photovoltaic Z-Source Inverter DC-Link Based on Zero Dynamic Design

Abstract:

Based on the DC-link voltage-to-shoot-through duty ratio control problem of non-minimum phase in Z-source inverter, the photovoltaic system has been taken as an example, according to the nonlinear characteristics and switching state equation of Z-source inverter, the affine nonlinear model was set, based on the differential geometric, the proper coordinate transformation was constructed. In order to simplify the controller, and ensure the internal dynamic system stability, the zero-dynamic design was used for controlling DC-link voltage of Z-source inverter. Simulation results show that when the change of the output power of photovoltaic cells occurs, this method has better dynamic characteristics.

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Periodical:

Advanced Materials Research (Volume 827)

Pages:

270-275

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.827.270

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Online since:

October 2013

Authors:

Yan Chen, Yong Zheng

Keywords:

Differential Geometry, Nonlinear, PV, Zero-Dynamic, Z-Source Inverter

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