A Solar Power Inverter with Low Voltage Storage Devices

doi:10.3969/j.issn.1000－7229.2018.04.017

Abstract

Abstract: ABSTRACT： To minimize the power vibration of the solar power generation, this paper proposes the topology of isolated PV grid-connected inverter with storage devices, in which the excess energy can be stored in storage devices and the maximum power point tracking （MPPT） of smooth grid power and PV panels can be accomplished. For the proposed topology, we analyze its working principle and switching patterns are analyzed, and the control algorithm is discussed for the residual quantity of storage device, so as to establish the control algorithm and modulation strategy. The experimental results show that the proposed topology of grid-connected inverter can realize the internal DC voltage control and the complete grid connection；the proposed control strategy and modulation algorithm are proved correct and feasible.

Key words: KEYWORDS： inverter, H-bridge, high frequency isolation transformer, pulse width modulation （PWM）, storage device

CLC Number:

LI Daxing1, YU Baoxin1, LI Jiaji1, ZHANG Huadong1, LI Wenlong1, CHEN Guangyu1, NIU Meng2. A Solar Power Inverter with Low Voltage Storage Devices[J]. Electric Power Construction, 2018, 39(4): 119-.

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