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Sumate Naetiladdanon
Department of Electrical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi (KMUTT), Bangkok 10 140, Thailand

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Journal article
Published: 26 April 2021 in Applied Sciences
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Recently due to air pollution concerns, a large number of electric vehicles have been integrated into the electric distribution system. However, the uncoordinated charging of this technology can cause different voltage issues. This paper proposes a two-stage optimization approach with active and reactive power control to coordinate electric vehicles with both grid-to-vehicle and vehicle-to-grid capabilities to satisfy both grid requirements and electric vehicle prosumer requirements. The system requirements considered are voltage deviation and unbalance and the electric vehicle prosumer requirements considered are minimization of charging and battery degradation costs. The coordination problem is formulated as an optimization problem, where the first stage objectives are: minimization of voltage unbalance, customer charging and battery degradation costs. The first stage optimization problem is solved using the meta-heuristic optimization algorithm known as particle swarm optimization to obtain an optimized real power schedule for the electric vehicles. The second stage is then solved of which the objective is to minimize the bus voltage deviation and provides the reactive power schedule for electric vehicles. All the analyses were carried out on the IEEE 34 bus distribution system and the study results show that the proposed method allows prosumers to charge at a minimum cost without any grid voltage unbalance factors and under/over voltage problems under different scenarios. Thus, this work can be beneficial for system operators or electric vehicle aggregators to create a day-ahead schedule.

ACS Style

Trinnapop Boonseng; Anawach Sangswang; Sumate Naetiladdanon; Samundra Gurung. A New Two-Stage Approach to Coordinate Electrical Vehicles for Satisfaction of Grid and Customer Requirements. Applied Sciences 2021, 11, 3904 .

AMA Style

Trinnapop Boonseng, Anawach Sangswang, Sumate Naetiladdanon, Samundra Gurung. A New Two-Stage Approach to Coordinate Electrical Vehicles for Satisfaction of Grid and Customer Requirements. Applied Sciences. 2021; 11 (9):3904.

Chicago/Turabian Style

Trinnapop Boonseng; Anawach Sangswang; Sumate Naetiladdanon; Samundra Gurung. 2021. "A New Two-Stage Approach to Coordinate Electrical Vehicles for Satisfaction of Grid and Customer Requirements." Applied Sciences 11, no. 9: 3904.

Journal article
Published: 14 April 2019 in Applied Sciences
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This paper presents an inverter topology for a wireless power transfer (WPT) system that is intended to reduce the component counts and complexity of the conventional excitation circuit for multiple transmitter coils. The proposed inverter topology requires only (n+2) power switches, where “n” is the number of transmitter coils. An excitation of a proper transmitter coil pattern with regard to the receiver coil position is determined. The output voltage can be regulated through the primary-side control by adjusting the duty cycles of the inverter switches. A detection method of the receiver coil position is presented using the detection switches on the secondary side. The detection algorithm is based on the reflected impedance knowledge and requires only a current sensor on the primary side. A proper transmitter coil pattern is energized to ensure maximum transfer efficiency throughout the operation. The proposed system is experimentally validated on the created 500-watt WPT multi-coil system. After the receiver coil is placed in a designated area, the proper transmitter coil pattern can be automatically selected and energized. The output voltage can be regulated to a desired value under the typical operation conditions, including load change.

ACS Style

Supapong Nutwong; Anawach Sangswang; Sumate Naetiladdanon. An Inverter Topology for Wireless Power Transfer System with Multiple Transmitter Coils. Applied Sciences 2019, 9, 1551 .

AMA Style

Supapong Nutwong, Anawach Sangswang, Sumate Naetiladdanon. An Inverter Topology for Wireless Power Transfer System with Multiple Transmitter Coils. Applied Sciences. 2019; 9 (8):1551.

Chicago/Turabian Style

Supapong Nutwong; Anawach Sangswang; Sumate Naetiladdanon. 2019. "An Inverter Topology for Wireless Power Transfer System with Multiple Transmitter Coils." Applied Sciences 9, no. 8: 1551.

Journal article
Published: 05 April 2019 in ECTI Transactions on Computer and Information Technology (ECTI-CIT)
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This paper presents an LLC resonant inverter with phase limit control to guarantee zero voltage switching (ZVS) operation and protect switching devices from spike current during the heating process. The output power is controlled by using the asymmetrical duty cycle (ADC) modulation. With phase limit control, the non-ZVS operation and spike current caused by a change of duty cycle with fixed frequency and load Curie’s temperature can be eliminated. The proposed method is confirmed through computer simulation and hardware experiment. The experimental results are provided with the heating of a 300 g of Tin from room temperature until melting at 232 ˚C.

ACS Style

Piyasak Kranprakon; Anawach Sangswang; Sumate Naetiladdanon. ZVS-Operation of LLC Resonant Inverter with Phase Limit Control for Induction furnace. ECTI Transactions on Computer and Information Technology (ECTI-CIT) 2019, 13, 29 -36.

AMA Style

Piyasak Kranprakon, Anawach Sangswang, Sumate Naetiladdanon. ZVS-Operation of LLC Resonant Inverter with Phase Limit Control for Induction furnace. ECTI Transactions on Computer and Information Technology (ECTI-CIT). 2019; 13 (1):29-36.

Chicago/Turabian Style

Piyasak Kranprakon; Anawach Sangswang; Sumate Naetiladdanon. 2019. "ZVS-Operation of LLC Resonant Inverter with Phase Limit Control for Induction furnace." ECTI Transactions on Computer and Information Technology (ECTI-CIT) 13, no. 1: 29-36.

Journal article
Published: 15 March 2019 in Applied Sciences
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This paper proposes a probabilistic method to obtain optimized parameter values for different power-system controllers, such as power-system stabilizers (PSSs) and battery energy-storage systems (BESSs) to improve probabilistic small-signal stability (PSSS) considering stochastic output power due to wind- and solar-power integration. The proposed tuning method is based on a combination of an analytical method that assesses the small-signal-stability margin, and an optimization technique that utilizes this statistical information to optimally tune power-system controllers. The optimization problem is solved using a metaheuristic technique known as the firefly algorithm. Power-system stabilizers, as well as sodium–sulfur (NaS)-based BESS controllers with power-oscillation dampers (termed as BESS controllers) are modeled in detail for this purpose in DIGSILENT. The results show that the sole use of PSSs and BESS controllers is insufficient to improve dynamic stability under fluctuating input power due to the integration of renewable-energy resources. However, the proposed strategy of using BESS and PSS controllers in a coordinated manner is highly successful in enhancing PSSS under renewable-energy-resource integration and under different critical conditions.

ACS Style

Samundra Gurung; Sumate Naetiladdanon; Anawach Sangswang. Coordination of Power-System Stabilizers and Battery Energy-Storage System Controllers to Improve Probabilistic Small-Signal Stability Considering Integration of Renewable-Energy Resources. Applied Sciences 2019, 9, 1109 .

AMA Style

Samundra Gurung, Sumate Naetiladdanon, Anawach Sangswang. Coordination of Power-System Stabilizers and Battery Energy-Storage System Controllers to Improve Probabilistic Small-Signal Stability Considering Integration of Renewable-Energy Resources. Applied Sciences. 2019; 9 (6):1109.

Chicago/Turabian Style

Samundra Gurung; Sumate Naetiladdanon; Anawach Sangswang. 2019. "Coordination of Power-System Stabilizers and Battery Energy-Storage System Controllers to Improve Probabilistic Small-Signal Stability Considering Integration of Renewable-Energy Resources." Applied Sciences 9, no. 6: 1109.

Journal article
Published: 27 June 2018 in Energies
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To achieve a free-positioning wireless power transfer (WPT) system, the output power must be regulated throughout the operation. This paper presents a novel output power control of a WPT system, based on the model predictive control (MPC). The output power is predicted by utilizing the system’s mathematical model. The optimal duty cycle for a desired output power is obtained through the minimization of the objective function, which is simple and easy to implement, with no need for gain tuning. The proposed controller is implemented on the primary side, without any measurement or communication devices on the secondary side. This reduces the cost, size, and complexity of the WPT system. The load resistance and mutual inductance identification method is also introduced. It is based on the reflected impedance knowledge, where only the information of primary current is required. Experimental results of the output power step response show better performance compared with conventional Proportional-Integral (PI) control. The proposed controller is experimentally validated on a 200 W kettle. The output power can be kept constant at 200 W while the kettle is laterally moved. With the proposed controller, the kettle can be placed freely up to 7 cm from the align position, which is 63.64% of the primary coil’s outer radius.

ACS Style

Supapong Nutwong; Anawach Sangswang; Sumate Naetiladdanon; Ekkachai Mujjalinvimut. A Novel Output Power Control of Wireless Powering Kitchen Appliance System with Free-Positioning Feature. Energies 2018, 11, 1671 .

AMA Style

Supapong Nutwong, Anawach Sangswang, Sumate Naetiladdanon, Ekkachai Mujjalinvimut. A Novel Output Power Control of Wireless Powering Kitchen Appliance System with Free-Positioning Feature. Energies. 2018; 11 (7):1671.

Chicago/Turabian Style

Supapong Nutwong; Anawach Sangswang; Sumate Naetiladdanon; Ekkachai Mujjalinvimut. 2018. "A Novel Output Power Control of Wireless Powering Kitchen Appliance System with Free-Positioning Feature." Energies 11, no. 7: 1671.

Journal article
Published: 28 November 2017 in ECTI Transactions on Computer and Information Technology (ECTI-CIT)
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Inductive power transfer (IPT) systems use the principle of magnetic coupling to transfer power through the air gap. A wireless battery charger is used as a case study. The resonant inverter is used to generate the high frequency current transmitting through the power pad. The basic topologies give the large inverter current with the large conduction loss. This paper proposes the LCL resonant voltage source inverter using low power device rating. The proposed IPT system has two operating points with different powers required. The ZVS operation region and two operating points are validated by the AC sweep of actual load and the frequency response of entire system. Finally, the experimental results at two operating points with the efficiency comparisons are included to verify the proposed system.

ACS Style

Nattapong Hatchavanich; Mongkol Konghirun; Anawach Sangswang; Sumate Naetiladdanon. The Analysis of LCL Resonant Inverter for Inductive Power Transfer Application. ECTI Transactions on Computer and Information Technology (ECTI-CIT) 2017, 11, 143 -153.

AMA Style

Nattapong Hatchavanich, Mongkol Konghirun, Anawach Sangswang, Sumate Naetiladdanon. The Analysis of LCL Resonant Inverter for Inductive Power Transfer Application. ECTI Transactions on Computer and Information Technology (ECTI-CIT). 2017; 11 (2):143-153.

Chicago/Turabian Style

Nattapong Hatchavanich; Mongkol Konghirun; Anawach Sangswang; Sumate Naetiladdanon. 2017. "The Analysis of LCL Resonant Inverter for Inductive Power Transfer Application." ECTI Transactions on Computer and Information Technology (ECTI-CIT) 11, no. 2: 143-153.

Journal article
Published: 02 July 2017 in ECTI Transactions on Computer and Information Technology (ECTI-CIT)
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This paper presents a technique to control the output voltage of a series-parallel (SP) topology inductive power transfer (IPT) system using only a controller, located on the primary side. This reduces the cost, size, complexity and loss of the system compared to conventional IPT dual-side controllers. An asymmetrical duty cycle control (ADC) of full-bridge inverters was used to control the DC output voltage to its designed value. Additionally, a zero voltage switching (ZVS) operation can be obtained at all power levels by varying the switching frequency of the inverter. Theoretical analysis was performed through a mutual inductance coupling model and verified by computer simulation. Experimental results of the circular magnetic structure IPT system with an adjustable air-gap confirm the validity of the proposed controller. The system efficiency was improved throughout the operation and the improvement became obvious as the output power was decreased.

ACS Style

Supapong Nutwong; Anawach Sangswang; Sumate Naetiladdanon; Ekkachai Mujjalinvimut. Output Voltage Control of the SP topology IPT system based on Primary side Controller operating at ZVS. ECTI Transactions on Computer and Information Technology (ECTI-CIT) 2017, 11, 71 -81.

AMA Style

Supapong Nutwong, Anawach Sangswang, Sumate Naetiladdanon, Ekkachai Mujjalinvimut. Output Voltage Control of the SP topology IPT system based on Primary side Controller operating at ZVS. ECTI Transactions on Computer and Information Technology (ECTI-CIT). 2017; 11 (1):71-81.

Chicago/Turabian Style

Supapong Nutwong; Anawach Sangswang; Sumate Naetiladdanon; Ekkachai Mujjalinvimut. 2017. "Output Voltage Control of the SP topology IPT system based on Primary side Controller operating at ZVS." ECTI Transactions on Computer and Information Technology (ECTI-CIT) 11, no. 1: 71-81.