Analysis of Tower Shadow Effects on Battery Lifetime in Standalone Hybrid Wind-Diesel-Battery Systems

Gan, Leong Kit; Shek, Jonathan; Mueller, Markus

doi:10.1109/tie.2017.2682781

Cited by 16 publications

(6 citation statements)

References 25 publications

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“…where represents the nonlinear control and is the equivalent control, which is obtained using (5), (6) and by setting the derivative of (6) to zero as:…”

Section: Equivalent Controlmentioning

confidence: 99%

“…In addition, the performance of a DG is reduced when it is operated at light load, as well as, when connected to balanced and unbalanced nonlinear loads [4]. Many solutions are proposed in the literature to solve these issues and to reduce CO 2 emissions [5][6][7][8]. In [9], a hybrid wind-diesel system-based solution is proposed, and in [10,11] solar-wind-diesel hybrid systems are suggested.…”

Section: Introductionmentioning

confidence: 99%

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Real-Time Implementation of Robust Control Strategies Based on Sliding Mode Control for Standalone Microgrids Supplying Non-Linear Loads

2018

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In this paper enhanced control strategies for standalone microgrids based on solar photovoltaic systems (SVPAs) and diesel engine driven fixed speed synchronous generators, are presented. Single-phase d-q theory-based sliding mode controller for voltage source converter voltage source converter (VSC) is employed to mitigate harmonics, balance diesel generator (DG) current, and to inject the generated power by SVPA into local grid. To achieve fast dynamic response with zero steady-state error during transition, sliding mode controller for inner control loop is employed. To achieve maximum power point tracking (MPPT) from SVPA without using any MPPT method, a DC-DC buck boost converter supported by battery storage system is controlled using a new control strategy based on sliding mode control with boundary layer. In addition, modeling and detailed stability analysis are performed. The performance of the developed control strategies, are validate by simulation using MATLAB/Simulink and in real-time using hardware prototype.

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“…where represents the nonlinear control and is the equivalent control, which is obtained using (5), (6) and by setting the derivative of (6) to zero as:…”

Section: Equivalent Controlmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Real-Time Implementation of Robust Control Strategies Based on Sliding Mode Control for Standalone Microgrids Supplying Non-Linear Loads

2018

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“…As a consequence, the installation of ESS must be limited to some strategic points in the grid. In addition, repetitive power cycling can affect the lifetime of commonly used storage technologies, such as batteries [6], suggesting rapid reduction of cycling operations.…”

Section: Introductionmentioning

confidence: 99%

Voltage-Dependent Load-Leveling Approach by Means of Electric Vehicle Fast Charging Stations

Gao

Carne

Andresen

et al. 2021

IEEE Trans. Transp. Electrific.

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Intermittent generation and load demand are one of the major challenges for grid operators. Caused for example by renewables power variability or electric vehicle charging, it can create mismatches between the realtime and forecasted demand, affecting frequency regulation. To alleviate this mismatch, operators have to resort either on the balancing market or on extensive use of energy storage systems, which increases operation costs. This paper introduces a load levelling approach exploiting the voltage dependency of the loads. With a controlled reactive power injection, the converters of fast charging stations can influence the voltage profile, and consequently the power consumption of voltage-dependent loads. The approach has two main goals: minimizing the mismatch with respect to the demand forecast and reducing grid losses. Fast charging stations are particularly suited for this approach. Being employed with full capacity for charging only for short-time, their spare capacity can be exploited to apply the load levelling approach. This proposed approach is discussed theoretically and analyzed in a modified distribution network in Northern Germany. Parameters variation analysis has been performed to thoroughly demonstrate the effectiveness of the approach under different load/grid conditions. Its feasibility has been evaluated by means of power-hardware-in-the-loop tests.

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“…Among these battery technologies, sealed lead-acid batteries are the most popular ESSs due to their lower prices, and higher efficiency with temperature changes [10]. However, field-operating data and reports have shown the short lifetime operation of lead-acid batteries [11]. The thermal stresses represent the major failure causes for power components [12]- [14].…”

Section: Introductionmentioning

confidence: 99%

New Temperature-Compensated Multi-Step Constant-Current Charging Method for Reliable Operation of Battery Energy Storage Systems

et al. 2020

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Battery lifetime represents a significant concern for the techno-economical operation of several applications based on energy storage. Moreover, the charging method is considered as one of the main critical elements in defining and influencing the operating lifetime of batteries. Several charging techniques have been addressed in the literature, however almost all of them are suffering from lack of temperature feedback in order to maintain battery lifetime. This paper presents a new high-reliable charging method for battery energy storage systems (ESSs). The proposed temperature compensated multi-step constant current (TC-MSCC) method is developed based upon the modified (MSCC) charging method. It enhances the operating lifetime of batteries by employing a feedback from the battery temperature to control the duration and starting time of each charging current step. Compared with the traditional charging methods addressed in the literature, the proposed TC-MSCC method achieves faster charging than the conventional constant current (CC) and the constant-current constant-voltage (CC-CV) methods. Moreover, the proposed TC-MSCC method possesses longer operating battery lifetime with reduced thermal stresses compared to the traditional MSCC methods. The proposed charging method is verified by simulation and experimental results using 9 Ah lead-acid battery. However, the new proposed TC-MSCC method is generalized and can be applied to various types of batteries. The detailed performance comparisons and results show the superiority of the proposed methods over the most widespread charging methods in the literature. INDEX TERMS Battery lifetime, battery charging methods, CC charging, CC-CV charging, MSCC charging, lead-acid battery.

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Analysis of Tower Shadow Effects on Battery Lifetime in Standalone Hybrid Wind-Diesel-Battery Systems

Cited by 16 publications

References 25 publications

Real-Time Implementation of Robust Control Strategies Based on Sliding Mode Control for Standalone Microgrids Supplying Non-Linear Loads

Real-Time Implementation of Robust Control Strategies Based on Sliding Mode Control for Standalone Microgrids Supplying Non-Linear Loads

Voltage-Dependent Load-Leveling Approach by Means of Electric Vehicle Fast Charging Stations

New Temperature-Compensated Multi-Step Constant-Current Charging Method for Reliable Operation of Battery Energy Storage Systems

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