{'fraction_non_alphanumeric': 0.02089337175792507, 'fraction_numerical': 0.005763688760806916, 'mean_word_length': 5.342465753424658, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
MPPT Performance Comparison Between Duty-Cycle Control and Current Control for Photovoltaic Power Conditioning System

In this paper, the characteristics of duty-cycle control method and current control method are compared in PV system under the same maximum power point tracking (MPPT) mode condition and verified by simulation and experiment. MPPT algorithm is based on perturb and observe (P&O) algorithm which has advantages of fast response, simple implementation and controllable availability. As a precondition for the performance comparison between duty-cycle control and current control method, the variable width of the PV voltage is designed to maintain the same value during one cycle of MPPT mode by setting variation of duty reference corresponding to variation of current reference through a series of processes. To verify the performance of two methods, simulations and experiments are performed to compare voltage, current and captured energy in PV PCS system. Under 1.7kW maximum power point condition, two control methods are verified in the same value of instantaneous power and instantaneous power integration through simulation and experiment in one cycle of MPPT. The operating point of two methods is located in the same point. The instantaneous power integration value is 3.26[kWs] for duty-cycle control and 3.22[kWs] for current control in experimental results.