Next Article in Journal
A Novel Protection and Location Scheme for Pole-to-Pole Fault in MMC-MVDC Distribution Grid
Next Article in Special Issue
Analysis, Modeling, and Control of Half-Bridge Current-Source Converter for Energy Management of Supercapacitor Modules in Traction Applications
Previous Article in Journal
The Efficiency of Nitrogen and Flue Gas as Operating Gases in Explosive Decompression Pretreatment
Previous Article in Special Issue
Design of Current Programmed Switching Converters Using Sliding-Mode Control Theory
Article Menu
Issue 8 (August) cover image

Export Article

Open AccessArticle
Energies 2018, 11(8), 2075;

MPPT and SPPT Control for PV-Connected Inverters Using Digital Adaptive Hysteresis Current Control

Internet of Energy Laboratory, Department of Technology Management for Innovation, the University of Tokyo, Tokyo 113-8656, Japan
Author to whom correspondence should be addressed.
Received: 8 July 2018 / Revised: 30 July 2018 / Accepted: 6 August 2018 / Published: 9 August 2018
(This article belongs to the Special Issue Design and Control of Power Converters)
Full-Text   |   PDF [5802 KB, uploaded 9 August 2018]   |  


Most PV systems are usually controlled by a Maximum Power Point Tracking (MPPT) algorithm to maximize the generated electrical power. However, the maximum power is often unstable and depends on the solar irradiance and temperature. This makes it difficult to control the power grid supply-demand balance due to fluctuations caused by the increase of renewable and variable PV systems. This paper proposes a new control algorithm for a PV-connected inverter called Specified Power Point Tracking (SPPT) control in addition to the conventional Maximum Power Point Tracking (MPPT) control. The PV system is controlled to generate the maximum power or a specified power depending on the electricity transactions comes from the electricity trading system. A high-speed FPGA-based digital adaptive hysteresis current control method, which has fast and stable response and simple structure comparing with the popular Sine-triangle Pulse Width Modulation (SPWM) method, is proposed to implement the MPPT and SPPT control. The adaptive hysteresis current band is calculated adaptively to improve a disadvantage of the classical fixed band hysteresis current control on the varying switching frequency. A reference current used in the adaptive hysteresis current control is calculated such that the output power of the PV-connected inverter is maximized in the MPPT control or is maintained at a given value in the SPPT control. The experimental and simulation results show that the PV-connected inverter under the proposed control algorithm generates the desired power almost exactly and yields stable and fast response despite the varying irradiance. View Full-Text
Keywords: PV-connected inverter; MPPT; SPPT; adaptive hysteresis current control PV-connected inverter; MPPT; SPPT; adaptive hysteresis current control

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Nguyen-Van, T.; Abe, R.; Tanaka, K. MPPT and SPPT Control for PV-Connected Inverters Using Digital Adaptive Hysteresis Current Control. Energies 2018, 11, 2075.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top