A Wind-Hydro Power System Using a Back-to-Back PWM Converter and Parallel Operated Induction Generators

Mazurenko, L.I.; Dzhura, O.V.; Kotsiuruba, A.V.; Shykhnenko, M.O.

doi:10.1109/paep49887.2020.9240777

Cited by 8 publications

(3 citation statements)

References 20 publications

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“…However, in the presence of hydro resources with required water head and flow, if stable power consumption is observed, preference should be given to a hydraulic IPS due to its independence of the fossil fuel. For a more optimal use of hydro resources, it is advisable to consider the possibility of building a hydro-wind IPS [1,2]. The independence from the fossil fuel, lower cost of electricity production compared to diesel and wind-diesel power plants, and good predictability of hydro resources have caused the interest in problematic issues and searching approaches for improving technical characteristics of hydraulic IPSs.…”

Section: Introductionmentioning

confidence: 99%

Modification of the Master Generator Method Used for Frequency and Voltage Control in Isolated Power Systems With Parallel Operating Ac Generators

et al. 2023

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Such methods as droop method, curve shifting method and master-slave method were primarily developed for voltage and frequency regulation in isolated power systems with synchronous generators. In modern power systems induction generators, regulated dump loads, energy storage devices with AC/DC and AC/DC/AC power converters, etc. are used in addition to synchronous generators. The investigation of new configurations of power systems is closely tied with further development of control methods for load sharing and regulation of voltage and frequency of the systems. The article reviews simple-to-implement known control methods used for control of isolated power systems with parallel operated synchronous generators and proposes a modification of the master-slave method for control of power systems with parallel operated synchronous and induction generators, static var compensators, dump loads and energy storage devices with interface power converters. The system “Hydroelectric unit with a synchronous generator - dump load - hydroelectric unit with an induction generator - compensating capacitors - transformer – AC local load" is considered and two techniques for regulation of electric frequency and voltage magnitude in the specified system are presented with accordance to the statements of the proposed modified method. The proposed control algorithm of the dump load frequency controller is in agreement with the control algorithm of the speed controller of the master unit. The functions assigned to the electronic PID speed controller of the master unit are to maintain the electric frequency in the system equal to nominal value and regulate the active power sharing. Verification of the proposed control algorithms for isolated electric power systems was carried out. References 23, figures 5, table 1.

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Section: Introductionmentioning

confidence: 99%

Modification of the Master Generator Method Used for Frequency and Voltage Control in Isolated Power Systems With Parallel Operating Ac Generators

et al. 2023

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“…The RDL is intended mainly to consume active power excess in the system when the ESS is fully charged. It can also be used for «frequency-responsive» spinning reserve regulation [17,18].…”

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confidence: 99%

Steady-state analysis of a hybrid power supply system using an induction generator with a shunt AC/DC converter

Mazurenko,

Dzhura,

Shykhnenko

2024

Electrical Engineering & Electromechanics

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Hybrid power supply systems (HPSSs) are considered as a good option for electric power supply of remotely located from the grid consumers due to significant fuel savings compared to diesel sets. Quick development and improvement of HPSSs may be achieved using specialized methodologies and programs. In the paper a schematic diagram is proposed and operation principles of a 400 V / 50 Hz HPSS were developed. The system’s main component is the master generating unit of the hydropower plant using a 250 kW induction generator (IG). The voltage of the system is controlled by the controller of the AC/DC power converter. The electrical frequency of the system is controlled by the speed controller of the hydropower turbine. A wind turbine, an energy storage system and a regulated dump load are connected to the IG through the AC/DC converter. Goal. The paper aims to develop a methodology for steady state performance analysis of the hydraulic turbine driven isolated IG operating in parallel through an AC/DC power converter with additional sources and consumers of active power. Methodology. The methodology for evaluation of performance characteristics of the IG operating in the proposed system has been developed. The methodology is based on the equivalent circuit of the system, equations of active and reactive power balance in the system and the superposition method. Results. The equations of frequency, voltage and power regulators of the system are given. The performance characteristics of the IG operating in the system supplying resistive and RL load in «constant voltage – constant frequency» mode are obtained. Novelty. The developed methodology is innovative in taking into account the control algorithms of the system. The comparative analysis of the IG’s performance operating in the stand-alone generating unit and in the generating unit connected to the proposed system is performed. Practical value. The developed methodology can be used for development and performance improvement of hybrid AC power systems.

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“…Interconnection of the complete model of the DFIG in steady-state connected to the electrical grid by means of a low-power B2B power converter for harmonic propagation studies. 6.…”

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confidence: 99%

Modeling and Validation of the Switching Techniques Applied to Back-to-Back Power Converter Connected to a DFIG-Based Wind Turbine for Harmonic Analysis

et al. 2021

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Most power quality problems for electrical grids connected to Doubly-Fed Induction Generators (DFIGs) include flicker, variations of the RMS voltage profile, and injected harmonics because of switching in power converters. These converters have different topologies with the back-to-back (B2B) topology being the most exploited in high-powered three-phase systems. Therefore, in this article a model of a DFIG connected to the B2B power converter is proposed to which different switching techniques are implemented for interharmonic propagation studies. The switching techniques that are implemented include the Sinusoidal PWM (SPWM), the third harmonic injection PWM (THIPWM), and the space vector PWM (SVPWM), to reduce the Total Harmonic Distortion (THD) index of voltage and current in both windings of the machine. MATLAB-Simulink® software is used for modeling and simulating the B2B power converter and the switching techniques. The proposed model is validated with an experimental prototype that includes a 3-kW DFIG, a 10 HP motor, a gear-box with a transmission ratio of 4.5: 1, a B2B power converter, and a three-phase transformer connecting the system to the electrical grid. Finally, it is shown that the results obtained from the experimental tests corroborate the correct operation of the proposed model.

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A Wind-Hydro Power System Using a Back-to-Back PWM Converter and Parallel Operated Induction Generators

Cited by 8 publications

References 20 publications

Modification of the Master Generator Method Used for Frequency and Voltage Control in Isolated Power Systems With Parallel Operating Ac Generators

Modification of the Master Generator Method Used for Frequency and Voltage Control in Isolated Power Systems With Parallel Operating Ac Generators

Steady-state analysis of a hybrid power supply system using an induction generator with a shunt AC/DC converter

Modeling and Validation of the Switching Techniques Applied to Back-to-Back Power Converter Connected to a DFIG-Based Wind Turbine for Harmonic Analysis

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