Laser & Optoelectronics Progress, Volume. 55, Issue 7, 72301(2018)
Tracking Strategy of Maximum Power Point Based on Three-Stage Variable Step-Size Incremental Conductance Algorithm
A three-stage variable step-size incremental conductance algorithm is proposed, which divides the operating steps into three modes by setting the upper and lower thresholds of the step-adjustment coefficients to ensure that the whole system can still operate with a relatively large step size when the illumination intensity changes drastically. The problem of a slow dynamic response speed for the traditional conductance incremental method is avoided. The simulation results show that, this algorithm can shorten the dynamic response time of this system to 5-6 ms. Moreover, the power oscillation near to the maximum power point is obviously weakened, the power loss of this system is also reduced, and the tracking accuracy is enhanced.
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Liu Chunjuan, Sun Yunyun, Mu Zhou, Ma Zhanshu. Tracking Strategy of Maximum Power Point Based on Three-Stage Variable Step-Size Incremental Conductance Algorithm[J]. Laser & Optoelectronics Progress, 2018, 55(7): 72301
Category: Optical Devices
Received: Nov. 29, 2017
Accepted: --
Published Online: Jul. 20, 2018
The Author Email: Yunyun Sun (945720579@qq.com)