Distributed Generation Grid-Connected Converter Testing Device Based on Cascaded H-Bridge Topology

Li, Yufei; Wang, Yue; Wang, Ruiming; Wu, Jiang; Zhang, Hailong; Feng, Yupeng; Li, Shaolin; Yao, Wenlong; Li, Ben Q.

doi:10.1109/tie.2015.2499720

Cited by 37 publications

(31 citation statements)

References 39 publications

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“…(9)(10)(11) Since the Warburg impedance Z w has influence only on the AC impedance at low frequency and the battery charge is above 1 Hz, the ion diffusion resistance can be ignored. (12)(13)(14) The high-frequency AC impedance model of a battery is shown in Fig. 3.…”

Section: Ac Impedance Analysis Of Batteriesmentioning

confidence: 99%

“…(4)(5)(6)(7)(8)(9)(10) The key technologies required to use a diesel generator in a microgrid are synchronous operation and load sharing. (11)(12)(13)(14)(15)(16) Therefore, back-up power is a necessity for heavily powerreliant facilities such as hospitals, office buildings, and hi-tech factories. (17) Currently, all diesel engine generators use lead acid batteries for starting.…”

Section: Introductionmentioning

confidence: 99%

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Research on the Prediction of the State-of-health of Starting Batteries of Diesel Engines

Lin

Chen²

2018

Sensors and Materials

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A study of state-of-health (SOH) prediction for diesel engine generator starting batteries is presented, the main purpose of which is to analyze the battery's state using the relationship between AC impedance and voltage. A sensing system capable of detecting battery open-circuit voltage and discharge current has been designed. The respective AC impedances at 100 and 50% battery SOH were obtained from a monitoring system, and linear regression was used to predict battery SOH. A new GS GTX7A-12B lead acid battery was used in the experiments and the results showed that there was a 11.265% difference between the actual battery SOH and that predicted by linear regression.

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Section: Ac Impedance Analysis Of Batteriesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on the Prediction of the State-of-health of Starting Batteries of Diesel Engines

Lin

Chen²

2018

Sensors and Materials

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“…The objective of the implemented GRASP metaheuristic is to optimally allocate DG to minimize the violation of chargeability and voltage limits per scenario, given by (2) and (4). The objective function is given by (5).…”

Section: Implemented Gasp Metaheuristicmentioning

confidence: 99%

“…The technical and economic benefits of DG have been widely studied in the specialized literature. Among other benefits, DG can contribute to the reduction of power losses [3], improvement of voltage profile [4], enhancement of network security [5] and deferment of investments [6]. Also, along with demand response, DG plays a key role in the new paradigm of smart girds [7].…”

Section: Introductionmentioning

confidence: 99%

Optimal allocation of distributed generation for improving chargeability and voltage profile under different operative scenarios

Mora¹,

Tamayo²,

López-Lezama³

2018

ces

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This paper presents an application of a GRASP metaheuristic for the optimal allocation of distributed generation (DG) in electric power systems. Four indexes indicating the system performance in normal operation and under contingency were designed to guide the search. The proposed indexes indicate violations in chargeability and voltage limits for different operative scenarios. The objective function consists on minimizing the impacts of single contingencies in the chargeability and voltage profile of a network. To show the applicability and effectiveness of the proposed approach several tests were performed on the IEEE 30 and 57 bus tests systems. Results show that the proposed approach allows to find the allocation of DG that maximizes its positive impacts in terms of voltage profile and chargeability.

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“…A high number of levels can be achieved with modular cell based inverters. While the use of modular multilevel converter (MMC) has been demonstrated in [7], this work considers the use of the Cascaded H-Bridge (CHB) converter [8] [9] with four-quadrant (4Q) cell design. Advantages offered by Silicon Carbide (SiC) devices are compared with more common Silicon (Si) based solutions.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of 1.7 kV SiC MOSFETs for a regenerative cascaded H-bridge multilevel converter cell

Hildebrandt

Petković

Dujić

2018

2018 IEEE International Conference on Industrial Technology (ICIT)

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High fidelity AC grid emulators allow early testing and qualification of various equipment under conditions close to those expected in reality. Realizing this at medium voltage high power level is associated with certain challenges, some of which are discussed in this paper. Medium voltage grid emulator based on the well-known four-quadrant Robicon topology is considered as platform for realization of the AC grid emulator. To achieve high resolution AC waveform with sufficiently high control bandwidth, SiC based cell design is compared with pure Si and Hybrid (Si+SiC) designs. Using SiC devices for the output H-bridge stage allows significantly higher switching frequencies, improving achievable control bandwidth and improving fidelity of emulator output voltage.

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Distributed Generation Grid-Connected Converter Testing Device Based on Cascaded H-Bridge Topology

Cited by 37 publications

References 39 publications

Research on the Prediction of the State-of-health of Starting Batteries of Diesel Engines

Research on the Prediction of the State-of-health of Starting Batteries of Diesel Engines

Optimal allocation of distributed generation for improving chargeability and voltage profile under different operative scenarios

Evaluation of 1.7 kV SiC MOSFETs for a regenerative cascaded H-bridge multilevel converter cell

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