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Off-grid Hybrid Energy Systems
Published in Yatish T. Shah, Hybrid Power, 2021
DC to DC converters accept a DC voltage at the input and output a modified DC voltage. The amplitude of the converter’s output voltage can be smaller or larger than the input voltage. To achieve this change in amplitude, the converters use reactive components (capacitors and inductors) and switching components such as diodes, metal-oxide-semiconductor field-effect transistors (MOSFETs), and insulated-gate bipolar transistors (IGBTs) [28,56]. By rapidly switching the converter between states, using pulse width modulation (PWM), the necessary output voltage can be attained. Moreover, by measuring the output (or input) voltage (or current) of the converter, the PWM can be altered to ensure the output voltage remains stable even when the input voltage varies. This property is essential when implementing nanogrid control strategies such as droop control. The most commonly used DC to DC converter topologies are buck style converters (output voltage is always less than the input), boost style converters (output voltage is always greater than the input), and buck-boost style converters (output voltage can be either greater or lesser than the input) [51,52].
Power Electronics
Published in Mohd Hasan Ali, Wind Energy Systems, 2017
A DC-to-DC converter is an electronic circuit that converts a source of DC from one voltage level to another. The variable DC voltage is controlled by chopping the input voltage by varying the on and off times (duty cycle) of a converter, and the type of the converter capable of such a function is known as a chopper. A schematic diagram of the chopper is shown in Figure 4.5. The control voltage to its gate is vc. The chopper is on for a time ton, and its off time is toff . Its frequency of operation is
Electric vehicle technology
Published in Tom Denton, Electric and Hybrid Vehicles, 2020
A DC-to-DC converter is a device that converts a source of direct current (DC) from one voltage level to another. In most systems, one DC voltage is converted to AC using an inverter, the voltage of this AC is changed using a transformer, and it is then rectified back into DC.
FOPID based MPPT for photovoltaic system
Published in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2018
P. Jeba, A. Immanuel Selvakumar
A dc-to-dc converter is an electronic device that converts a source of direct current (DC) from one voltage level to another. This model was made by forming a state space model of a boost converter was attached to the solar panel which would generate electricity from the solar radiation. The power from the solar panel is not sufficient to meet the demand load that has to be boosted by the boost converter. Figure 2 shows the overall block diagram of the FOPID system.