Modeling and control of a three-phase isolated grid-connected converter for photovoltaic applications

Villalva, Marcelo Gradella; Siqueira, Thais Gama de; Espindola, Marcos Fernando; Ruppert, Ernesto

doi:10.1590/s0103-17592011000300001

Cited by 20 publications

(14 citation statements)

References 9 publications

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“…M 1 , M 2 , M 3 dan M 4 are respectively driven by four Gate Driver Devices, i.e. E 1 , E 2 , E 3 dan E 4 . In general, we can also use insulated-gate bipolar transistors or IGBT [9] as the switching devices.…”

Section: A Circuit Modeling Using Spicementioning

confidence: 99%

“…Inverver can be classified in accordancee with its domain of applications, the way its output is controlled, the number of output phases, output voltage handling, and output waveform [1], [2]. According to its phase number, inverter can be classified into three-phase [2], [4] and single-phase inverter [3], [5]. Single-phase inverters can have pure sine waveform [3] generates high total harmonic distortion (THD).…”

Section: Introductionmentioning

confidence: 99%

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DC/AC power converter for home scale electricity systems powered by renewable energy

Samman

Azhari

2016

2016 International Conference on Smart Green Technology in Electrical and Information Systems (ICSGTEIS)

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Abstract-This paper presents the design of a single phase DC/AC Converter or Inverter for home scale electricity systems powered by renewable energy such as photovoltaic system. The power converter is controlled using a microcontroller. The inverter system is firstly modeled and simulated using SPICE, before we design it. A control software, implementing Sinusoidal Pulse-Width Modulation (SPWM) signal generator, is embedded into the microcontroller. The SPWM signal is implemented with a simple on/off set activation based on a scheduled-time. The time schedule is obtained from simulation. This approach results in a simpler program compared to another approach, where sawtooth and sinusoidal signal are compared to obtain the required SPWM signal. The inverter is tested for different load conditions. Using a few load configuration, the THD varies between 1% to 13% depending on the load types and the resistive values on the loads. The inverter output voltage amplitude is also measured, and it changes due to the load changes. (Abstract)

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Section: A Circuit Modeling Using Spicementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

DC/AC power converter for home scale electricity systems powered by renewable energy

Samman

Azhari

2016

2016 International Conference on Smart Green Technology in Electrical and Information Systems (ICSGTEIS)

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“…Fig. 1 shows a simplified scheme of the control system employed for controlling the DC-DC and DC-AC converters [5] [6]. The first control block is responsible for tracking the array maximum output power (MPPT) and regulating the PV array voltage by controlling the switching of the DC-DC converter.…”

Section: Description Of the Two-stage Grid-tie Invertermentioning

confidence: 99%

“…Figure 1 [4] shows a two-stage PV inverter composed of cascaded DC-DC and DC-AC converters. The isolation transformer may be a low-frequency one placed at the output of the DC-AC converter, however the usage of a high-frequency transformer in the DC-DC converter is preferred for reducing size and weight [5].…”

Section: Introductionmentioning

confidence: 99%

Modeling and digital control of a high-power full-bridge isolated DC-DC buck converter designed for a two-stage grid-tie PV inverter

Filho

Oliveira

Barros

et al. 2014

2014 IEEE Energy Conversion Congress and Exposition (ECCE)

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This paper describes a grid-tie photovoltaic (PV) inverter composed of an isolated full-bridge buck DC-DC converter with high-frequency transformer and a cascaded DC-AC full-bridge inverter connected to the grid. Emphasis is given on the modeling and digital control design of the DC-DC converter with the polynomial pole placement method. Simulation results are presented and a inverter prototype is currently being built.Keywords -Photovoltaic grid tie inverter, digital control, polynomial pole placement, isolated full-bridge buck.

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“…Control of three-phase or single-phase bidirectional converters always have the same structure with two control loops. In systems not having energy storage at DCbus, inner current loop is used to regulate the current at the point of common coupling (PCC) corresponding to the interactive power and outer voltage loop to hold voltage at DCbus at a fixed value [8], [10].…”

Section: Introductionmentioning

confidence: 99%

Grid-Connected Control System for Three-Phase Bidirectional DC/AC Converter to Exploit Photovoltaic Power Generation

Phong¹

2017

AJETM

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Abstract:A grid-connetected control system is proposed in this paper to regulate three-phase bidirectional DC/AC converters in distribution grid exploiting photovoltaic power generation and not having energy storage at the DC side. To interact power flow at two its sides, statbilize voltage at the DCbus and synchronize with the grid, it includes an inner current controller and an outer voltage controller in a cascaded structure. Using small signal modeling and information about voltage at the point of common coupling and DCbus, control parameters for controllers are determined to balance power between photovoltaic system side and grid side. Simulation results show that the grid-connected control system helps the three-phase bidirectional DC/AC converter meet all requirements very well due to the balance of power at its sides to hold voltage at DC side at a fixed value, grid synchronization and low harmonic distortion total for current and voltage waveforms. They also represents the capability to exploit maximum available power of photovoltaic power generation under any operational condition.

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Modeling and control of a three-phase isolated grid-connected converter for photovoltaic applications

Cited by 20 publications

References 9 publications

DC/AC power converter for home scale electricity systems powered by renewable energy

DC/AC power converter for home scale electricity systems powered by renewable energy

Modeling and digital control of a high-power full-bridge isolated DC-DC buck converter designed for a two-stage grid-tie PV inverter

Grid-Connected Control System for Three-Phase Bidirectional DC/AC Converter to Exploit Photovoltaic Power Generation

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