Model Predictive Current Control with Harmonic Correction for Single-Phase AC-DC EV Charging
2026-06-29 • Artificial Intelligence
Artificial IntelligenceHardware Architecture
AI summaryⓘ
The authors address a problem in electric vehicle chargers that causes unwanted electrical noise in the power grid. They improve an existing control method, Model Predictive Current Control (MPCC), by allowing it to adjust continuously instead of in fixed steps and by including a way to estimate and reduce specific harmonic disturbances. Their new approach better cleans up the electric current, lowering the total harmonic distortion more effectively than before. Simulations show their method significantly reduces electrical noise in single-phase onboard chargers.
Electric Vehicles (EVs)On-Board Charger (OBC)Power Factor Correction (PFC)Model Predictive Current Control (MPCC)Harmonic DistortionDuty Cycle ControlTotal Harmonic Distortion (THD)Switching StatesInductor CurrentHarmonic Estimation
Authors
Changhong Li, Bharathkumar Hegde, Biswajit Basu, Shreejith Shanker
Abstract
The increasing integration of Electric Vehicles (EVs) has imposed a growing harmonic challenge on the power grid. For AC/DC Power Factor Correction (PFC) in single-phase On-Board Chargers (OBCs), Model Predictive Current Control (MPCC) improves the current quality by predicting and tracking the inductor current. However, finite control set MPCC selects switching states, resulting in discrete control actions and a limited optimisation space. Moreover, the MPCC cost function based on instantaneous current tracking error has limited capability to compensate for low-order harmonic disturbances induced by dead time, control delay, and model parameter mismatch. This paper proposes a duty cycle predictive MPCC incorporating a real-time harmonic estimation reference. The proposed method dynamically estimates the low-order harmonic components of the input current and corrects the MPCC reference current, enabling continuous duty cycle control and targeted suppression of dominant low-order harmonics. Simulation results on a single-phase OBC demonstrate that the proposed duty cycle predictive MPCC reduces the steady-state current THD_i from 11.47% to 6.10% compared with the switching state predictive MPCC. With the harmonic reference, the THD_i is further reduced to 2.85%.