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To design the current controller for the grid-connected inverter (GCI), the grid is usually assumed as balance. Hence, the current controller performance gets worse when the grid is unbalanced. In this paper, a virtual inductor is proposed to suppress the effects of grid unbalances. Virtual inductor is an additional control algorithm that changes the system behavior as if there is a real inductor...
Currently there are 12.659 remote and underdeveloped villages in Indonesia that do not have access to public utility (PLN) electricity. From those villages, 2.519 of them have no electricity at all. The absence of electricity inhibited people's quality of life, and will hold down economic growth. Therefore, electrification of those villages is very important. The conventional way of electricity generation...
The latest development of 5 kW Transformerless Bidirectional Inverter in PT. Len Industri is reported, accompanied with the experimental result. The dc-dc converter and inverter topology and control is described in brief. Next, hardware design and parallel design are examined. Parallel operation component will be highlighted, such as PLL, Droop Control and Virtual Impedance. Finally, the inverter...
A multiple three-phase machine can be symmetrical or asymmetrical, depending on the phase displacement between the three-phase stator winding sets. This paper investigates the optimal phase displacement to minimize the output current ripple of nine-phase PWM inverters. The output current can be separated into current components that produce air gap flux and current components that produce copper losses...
The concern for the supporting power converters is unavoidable in the development of inductive power charging system technology for electric vehicle application. In both the primary and secondary sides, power converters are needed to both generate and harvest the high frequency AC power which is transferred wirelessly in a resonant frequency. In his paper, we develop the power converters that are...
The latest development of power drive system product for electric vehicle in PT. Len Industri is reported. Some of the power drive components used in electric vehicle will be described in brief. The vvvf inverter as the core of electric vehicle will be discussed in detail including the hardware design and the control strategy. Finally, some experimental results from a driving test will be presented.
This paper presents implementation prototype data logger of PV monitoring system based on low cost online monitoring for existing 1.6 kWp single-phase grid-connected photovoltaic (PV) system in Electrical Energy Conversion Research Laboratory (EECRL) of School of Electrical Engineering and Informatics (SEEI), Institute of Technology Bandung (ITB). For cost reduction, the data logger developed by microcontroller...
This paper presents the results of developing an ARM Microcontroller-based Quasi-Resonant Induction Heater. The induction heater consists of three modules: power circuit, temperature control, and data acquisition system. Power circuit module is used to generate a high frequency electromagnetic field and current to generate heat at the workpiece. Temperature control module is used to control the temperature...
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