High Step-Up DC/DC Topology and MPPT Algorithm for Use With a Thermoelectric Generator

Laird, Ian; Lu, Dylan Dah-Chuan

doi:10.1109/tpel.2012.2219393

Cited by 136 publications

(45 citation statements)

References 31 publications

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“…As compared with other high step-up converters in the literature [19][20][21], the proposed converter has a higher voltage gain than that of the conventional converters if n = 1.5, which is shown in Figure 7. …”

Section: Derivation Of Voltage Gainmentioning

confidence: 88%

“…Those converters have the features of simple structure, high voltage gain, and low cost, nevertheless, the problem of voltage gain inflexibility still exists. In the most current trend, switched capacitor and coupled inductor techniques are adopted to design high step-up converters [15][16][17][18][19]. Those high step-up converters have their own advantages and disadvantages, and result in a compromise between power component count, voltage gain, current stress, voltage stress, and power rating.…”

Section: Introductionmentioning

confidence: 99%

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Integrated Three-Voltage-Booster DC-DC Converter to Achieve High Voltage Gain with Leakage-Energy Recycling for PV or Fuel-Cell Power Systems

2015

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Abstract:In this paper, an integrated three-voltage-booster DC-DC (direct current to direct current) converter is proposed to achieve high voltage gain for renewable-energy generation systems. The proposed converter integrates three voltage-boosters into one power stage, which is composed of an active switch, a coupled-inductor, five diodes, and five capacitors. As compared with conventional high step-up converters, it has a lower component count. In addition, the features of leakage-energy recycling and switching loss reduction can be accomplished for conversion efficiency improvement. While the active switch is turned off, the converter can inherently clamp the voltage across power switch and suppress voltage spikes. Moreover, the reverse-recovery currents of all diodes can be alleviated by leakage inductance. A 200 W prototype operating at 100 kHz switching frequency with 36 V input and 400 V output is implemented to verify the theoretical analysis and to demonstrate the feasibility of the proposed high step-up DC-DC converter.

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Section: Derivation Of Voltage Gainmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Integrated Three-Voltage-Booster DC-DC Converter to Achieve High Voltage Gain with Leakage-Energy Recycling for PV or Fuel-Cell Power Systems

2015

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“…Therefore, the MPPT control method of a PV array is an essential part of a PV system. There are numerous studies on different types of MPPT control methods such as perturbation and observation (P&O) [13], [14], incremental conductance (INC) [15], incremental resistance (INR) [16], open-circuit voltage [17], short-circuit current [18], hill climbing [19], neural network [20], fuzzy logic control [21] and b method [22].…”

Section: Introductionmentioning

confidence: 99%

Current Sensorless MPPT Control Method for Dual-Mode PV Module-Type Interleaved Flyback Inverters

Lee¹,

Lee²,

Lee³

2015

Journal of Power Electronics

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This paper presents a current sensorless maximum power point tracking (MPPT) control method for dual-mode photovoltaic (PV) module-type interleaved flyback inverters (ILFIs). This system, called the MIC (Module Integrated Converter), has been recently studied in small PV power generation systems. Because the MIC is an inverter connected to one or two PV arrays, the power system is not affected by problems with other inverters. However, since the each PV array requires an inverter, there is a disadvantage that the initial installation cost is increased. To overcome this disadvantage, this paper uses a flyback inverter topology. A flyback inverter topology has an advantage in terms of cost because it uses fewer parts than the other transformer inverter topologies. The MPPT control method is essential in PV power generation systems. For the MPPT control method, expensive dc voltage and current sensors are used in the MIC system. In this paper, a MPPT control method without current sensor where the input current is calculated by a simple equation is proposed. This paper also deals with dual-mode control. Simulations and experiments are carried out to verify the performance and effectiveness of the proposed current sensorless MPPT control method on a 110 [W] prototype.

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“…The photovoltaic (PV) power generation technology, which attracts great attention as a next-generation energy source, essentially requires a high step-up DC-DC converter [1]- [5]. The boost converter tends to restrict the boosting ratio for applications with large gap between input and output voltage because these applications require extremely high duty cycle of the main switch for high step-up voltage [6]- [8]. This operation leads to the stress increase of voltage or of current on the switches and diodes, as well as the increase in diode-switching loss caused by reverse recovery characteristics.…”

Section: Introductionmentioning

confidence: 99%

Single-Ended High-Efficiency Step-up Converter Using the Isolated Switched-Capacitor Cell

Kim¹,

Jang²,

Park³

et al. 2013

Journal of Power Electronics

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The depletion of natural resources and renewable energy sources, such as photovoltaic (PV) energy, has been highlighted for global energy solution. The PV power control unit in the PV power-generation technology requires a high step-up DC-DC converter. The conventional step-up DC-DC converter has low efficiency and limited step-up ratio. To overcome these problems, a novel high step-up DC-DC converter using an isolated switched capacitor cell is proposed. The step-up converter uses the proposed transformer and employs the switched-capacitor cell to enable integration with the boost inductor. The output of the boost converter and isolated switched-capacitor cell are connected in series to obtain high step-up with low turn-on ratio. A hardware prototype with 30 V to 40 V input voltage and 340 V output voltage is implemented to verify the performance of the proposed converter. As an extended version, another novel high step-up isolated switched-capacitor single-ended DC-DC converter integrated with a tapped-inductor (TI) boost converter is proposed. The TI boost converter and isolated-switchedcapacitor outputs are connected in series to achieve high step-up. All magnetic components are integrated in a single magnetic core to lower costs. A prototype hardware with 20 V to 40 V input voltage, 340 V output voltage, and 100 W output power is implemented to verify the performance of the proposed converter.

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High Step-Up DC/DC Topology and MPPT Algorithm for Use With a Thermoelectric Generator

Cited by 136 publications

References 31 publications

Integrated Three-Voltage-Booster DC-DC Converter to Achieve High Voltage Gain with Leakage-Energy Recycling for PV or Fuel-Cell Power Systems

Integrated Three-Voltage-Booster DC-DC Converter to Achieve High Voltage Gain with Leakage-Energy Recycling for PV or Fuel-Cell Power Systems

Current Sensorless MPPT Control Method for Dual-Mode PV Module-Type Interleaved Flyback Inverters

Single-Ended High-Efficiency Step-up Converter Using the Isolated Switched-Capacitor Cell

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