Diesel generator slow start-up compensation by supercapacitor for DC microgrid power balancing

Yin, Changjie; Sechilariu, Manuela; Locment, Fabrice

doi:10.1109/energycon.2016.7514058

Cited by 12 publications

(3 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One significant advantage of using this solution is to minimize the impact of the load fluctuation on the diesel engine. However, preparing such an arrangement with controlled rectifiers is complicated, and not sufficient enough to produce constant DC voltage during an unexpected load change [73]. The traditional method to meet different electric power demands is to adjust DE fuel hatch using a mechanical governor.…”

Section: Engine Generator Application With Super Capacitormentioning

confidence: 99%

Variable Speed Diesel Generators: Performance and Characteristic Comparison

2022

View full text Add to dashboard Cite

Diesel generators (DGs) are set to work as a backup during power outages or support the load in remote areas not connected to the national grid. These DGs are working at a constant speed to produce reliable AC power, while electrical energy demand fluctuates according to instantaneous needs. High electric loads occur only for a few hours a day in remote areas, resulting in oversizing DGs. During a low load operation, DGs face poor fuel efficiency and condensation of fuel residues on the walls of engine cylinders that increase friction and premature wear. One solution to increase combustion efficiency at low electric loads is to reduce diesel engine (DE) speed to its ideal regime according to the mechanical torque required by the electrical generator. Therefore, Variable Speed Diesel Generators (VSDGs) allow the operation of the diesel engine at an optimal speed according to the electrical load but require additional electrical equipment and control to maintain the power output to electrical standards. Variable speed technology has shown a significant reduction of up to 40% fuel consumption, resulting in low GHG emissions and operating costs compared to a conventional diesel generator. This technology also eliminates engine idle time during a low load regime to have a longer engine lifetime. The main objective of this survey paper is to present the state of the art of the VSDG technologies and compare their performance in terms of fuel savings, increased engine lifetime, and reduced greenhouse gases (GHG) emissions. Various concepts and the latest VSDG technologies have been evaluated in this paper based on their performance appraisal and degree of innovation.

show abstract

Section: Engine Generator Application With Super Capacitormentioning

confidence: 99%

Variable Speed Diesel Generators: Performance and Characteristic Comparison

2022

View full text Add to dashboard Cite

show abstract

“…Even, in the case of large induction motors, starting and fluctuating loads causes serious effect of instability on the diesel-generator operation due to wide frequency variations [15]. In a DC microgrid, slow start-up dynamic response of DG is compensated by the supercapacitor to improve microgrid dynamic characteristics [16]. The supercapacitor-battery combination helps in reduction in the fuel consumption in hybrid electric vehicles (HEV) with improved battery voltage, and the reduction in emissions for better climate quality through minimized engine idling [17], [18].…”

Section: Introductionmentioning

confidence: 99%

Supercapacitor based cost effective hybrid energy storage system with reduction in battery size for diesel generator cold cranking

Moholkar

Bankar

Karandikar³

2023

IJEECS

View full text Add to dashboard Cite

The supercapacitor characteristic of high-power delivery coupled with very fast charge/discharge cycles find its use in hybrid energy storage systems. In this paper, the supercapacitor bank is integrated with small capacity lead-acid battery for the development of cost-effective hybrid energy storage system to crank vintage model of diesel-generator. The developed system uses microcontroller-based controls with active voltage balancing circuit with reliable cranking, enhanced battery life and reduced failures at low temperatures are the advantages of the developed system. The developed system resulted in battery size reduction by almost 80%, and thus, reduction in its replacement cost, besides devising a general formula for the sizing of supercapacitor bank for different diesel generators is an innovative outcome of the research study. The multiple cold cranking in a single charge of supercapacitor bank is another novelty, with the charging of supercapacitor bank from the available automobile battery is the added feature in the developed hybrid energy storage system. The developed system paves the ways for the reduced maintenance.

show abstract

“…In general, high RE penetrations add complexity, with increased demand placed upon the control and energy management strategies [1,[12][13][14][15]. From the perspective of the diesel generation, these strategies tend to restrict diesel contribution to one of two extremes, standby operation [16,17] or continuous operation [6,18]. Enabling technologies are required for standby operation, with energy storage system or continuous operation [6,18].…”

Section: Introductionmentioning

confidence: 99%

Economics of Renewable Energy Integration and Energy Storage via Low Load Diesel Application

2018

View full text Add to dashboard Cite

One-quarter of the world's population lives without access to electricity. Unfortunately, the generation technology most commonly employed to advance rural electrification, diesel generation, carries considerable commercial and ecological risks. One approach used to address both the cost and pollution of diesel generation is renewable energy (RE) integration. However, to successfully integrate RE, both the stochastic nature of the RE resource and the operating characteristics of diesel generation require careful consideration. Typically, diesel generation is configured to run heavily loaded, achieving peak efficiencies within 70-80% of rated capacity. Diesel generation is also commonly sized to peak demand. These characteristics serve to constrain the possible RE penetration. While energy storage can relieve the constraint, this adds cost and complexity to the system. This paper identifies an alternative approach, redefining the low load capability of diesel generation. Low load diesel (LLD) allows a diesel engine to operate across its full capacity in support of improved RE utilization. LLD uses existing diesel assets, resulting in a reduced-cost, low-complexity substitute. This paper presents an economic analysis of LLD, with results compared to conventional energy storage applications. The results identify a novel pathway for consumers to transition from low to medium levels of RE penetration, without additional cost or system complexity.

show abstract

Diesel generator slow start-up compensation by supercapacitor for DC microgrid power balancing

Cited by 12 publications

References 14 publications

Variable Speed Diesel Generators: Performance and Characteristic Comparison

Variable Speed Diesel Generators: Performance and Characteristic Comparison

Supercapacitor based cost effective hybrid energy storage system with reduction in battery size for diesel generator cold cranking

Economics of Renewable Energy Integration and Energy Storage via Low Load Diesel Application

Contact Info

Product

Resources

About