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Hamiltonian Control Law with State Observer on Practical Design of Wireless Power Transfer for Autonomous Guided Vehicle Battery Charging Applications
(2026-01-01)
Pairindra, Worapong
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Somboonpanya, Nattapon
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Ketjaem, Supakorn
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Phongsawat, Suwaphit
;
Phophongviwat, Teeraphon
This paper presents the design and calculation of wireless power transfer (WPT) integrated with the Hamiltonian Control Law. The proposed controller demonstrates greater effectiveness in terms of system stability and precise energy control, as compared to the commonly used PI controller in industrial applications. The proposed prototype has been built for assessment in both simulation and implementation, with a rated output power of 500 W and 48 V. The load-independent compensating topology, such as the LCC-S resonant tank, is used to transmit power wirelessly through an air core. Finally, in the last stage, the Hamiltonian Control Law with state observer is applied on the dc-to-dc buck mode converter to control the battery current and overall system. Apparently, the charging current can be precisely regulated to a specific value.
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A Two-Phase Induction Generator System using the Vector Control Technique
(2024-01-01)
Rujidam, Navee
;
Jamshidpour, Ehsan
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Kinnares, Vijit
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Baghli, Lotfi
;
Takorabet, Noureddine
This paper proposes a vector control drive system for a two-phase induction generator. The system comprises a single-phase full-bridge grid converter and a two-phase three-leg voltage source inverter, both controlled using vector control. The grid converter utilizes voltage-oriented control, the inverter is managed through field-oriented control. This approach enhances the electromagnetic torque performance of the two-phase induction generator. The system is simulated using MATLAB/Simulink, and the simulation results indicate that the generator torque exhibits a smooth and fast transient response. Additionally, the grid current of the system closely approximates a sinusoidal waveform with a near unity power factor.
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Control Strategy of Interleaved Buck Converter for Automated Guided Vehicles with Misalignment in Wireless Power Transfer Systems
(2024-01-01)
Phongsawat, Suwaphit
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Pairindra, Worapong
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Khomfoi, Surin
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Phophongviwat, Teeraphon
;
Takorabet, Noureddine
The analysis of the positioning of the power transmission coil with a power rating of 3 kW and an output voltage of 48 V at a frequency of 85 kHz is presented, along with a simulation of the wireless power transfer (WPT) control system using an LCC-S resonance compensation circuit, applied to automated guided vehicles (AGVs). The case where the coil positions are misaligned with a deviation of 0-20% from the size of the power transmission coil is considered. Apparently, it can be illustrated that when the two power transmission coils are misaligned, the battery can still be charged in constant current mode using an interleaved buck converter circuit through a PI controller to increase the output power. The operation is simulated using MATLAB/Simulink software.
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Improved Hamiltonian Control Law with Load Current Sensorless of Multiphase Parallel Converter for Electric Vehicle Applications
(2023-01-01)
Kamnarn, Uthen
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Yodwong, Burin
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Mungporn, Pongsiri
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Thounthong, Phatiphat
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Khomfoi, Surin
This article presents an improved Hamiltonian control law (HCL) with load current sensorless ability for multiphase parallel converters in electric vehicle applications. On one hand, the proposed control approach has a significant advantage in handling constant power load (CPL) that occurs in the situation of the vehicle, which is a dangerous situation that can cause oscillations and uncertainty. On the other hand, the load current observer is applied with HCL to improve the efficiency and reliability of the converter system. In addition, by eliminating the need for current sensors, the cost and size of the converter system are reduced, while maintaining accurate current control. Moreover, the difference flatness approach has been applied to generate the current reference resulting in regulating the DC bus voltage. Finally, the multiphase two-quadrant converter driving by the proposed control law has been evaluated through experimental tests. The obtained experimental results demonstrate the excellent performance of the multiphase two-quadrant converter with CPL thereby confirming the efficacy of the proposed approach.
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Hamiltonian-Differential Flatness Control Laws for Battery/Ultracapacitor for Hybrid Electric Vehicle Applications
(2023-01-01)
Mungporn, Pongsiri
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Khomfoi, Surin
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Inteeworn, Ridtee
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Gonmanee, Apinun
;
Pierfederici, Serge
This paper introduces the Hamiltonian-differential flatness control laws specifically designed for battery and ultracapacitor (UC) hybrid vehicle systems. The main goal of these control laws is to effectively manage power flow and optimize energy utilization in hybrid systems combining batteries and UC. The proposed control laws use Hamiltonian control and differential flatness techniques to dynamically regulate the energy distribution between the battery and UC, particularly in the context of constant power load (CPL) challenges within DC Microgrid applications, including vehicle systems. To confirm the efficiency of the proposed control strategy, the experimental test bench has been set up with a Li-ion battery module (LFeLi-48100TB, 48 Vdc, 100 Ah) and a UC module with a capacitance of (188.88 F, 51.3 V.) Finally, the experimental results confirm the exceptional performance of the studied control law throughout the load-drive cycles.
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Wireless Power Transfer System for Autonomous Driving Robot Battery Charging
(2023-01-01)
Pairindra, Worapong
;
Khomfoi, Surin
;
Takorabet, Noureddine
;
Thounthong, Phatiphat
This paper presents a prototype of a 48V, 200W with 85 kHz wireless power transfer. The load-independent charging topology consists of an LCC/C resonant tank that provides an autonomous driving robot that is used in many industrial applications. The validation is carried out using MATLAB/Simulink and hardware implementation. The rear side battery can apparently be charged with a 15cm distance between two coils and the output voltage can be controlled at a specific level with approximately 70% efficiency.
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The Development of DC-Nano Grid with Wide-Range Wireless Power Transfer for EVs
(2022-01-01)
Pairindra, Worapong
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Khomfoi, Surin
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Takorabet, Noureddine
;
Thounthong, Phatiphat
This research paper presents a wireless power supply for electronic or electrical devices such as LED taillights or headlight bulbs on the electric vehicle (EVs). The main objectives of using wireless power transfer (WPT) are cost savings and the prevention of fires caused by the insulation burning due to overheating in the conventional cable. According to commercial necessity, the primary goal of the research is to simplify the power converter and transmission coils. Therefore, a high-frequency half-bridge inverter connected with a resonant tank compensator is selected for this task. The power transfer rate is set at 24V, 24W via the high-frequency inverter with 4SV DC input voltage. Apparently, the wireless power at the point load can be controlled at the desired value by using both MATLAB/Simulink and hardware implementations with different ranges of evaluation.

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