DC Coupled PV & Storage - Energy Forum
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DC Coupled PV & Storage An Overview REI Expo, Greater Noida, 19 th September, 2019
Transcript of DC Coupled PV & Storage - Energy Forum
DC Coupled PV & StorageAn Overview
REI Expo, Greater Noida, 19th September, 2019
AC coupled BESS
• Utility Scale PV projects are the majorcontributors to the solar PV
• Most of the Battery Storage Projects arecurrently coupled at the AC side
• This results in having two sets of inverters, onefor the PV system and one for the battery (bi-directional PCS)
• AC coupled BESS systems can only storepower generated at the AC side of the inverters
DC coupled storage enhances the capabilities of PV plant
• Complete power conversion solution for the solarplant
• Batteries and PV are coupled at the DC level in orderto take advantage of higher PV-to-inverter ratios andmaximize solar yield.
• Extensive energy storage and power sectorexperience coupled with deep expertise in designand engineering delivers a superior system
• Simplifies the connectivity for a combined solar +storage system
SunFlex Energy Storage TM PlatformMaximum solar yield. Delivered when you want it.
Sell up to 50% more solar energy perinterconnected MW due to a higher PV-to-inverter ratio.Eliminates solar variability across the day andexpands the delivery of solar energy into thenight.
Improve plant stability by smoothing and limitingthe ramping of solar output.Provides the ability to stack additional gridservices, such as frequency regulation, capacityfirming, and ramp rate control.
Add more solar panels without the cost ofchanging the interconnection.Simplify the interconnection process forcombined solar and storage facilities.
Increased Solar Capacity
Expanded Capability
Simplifies Site Design
Maximizing Solar with DC-Coupled Energy Storage
SunFlex systems will be distributed through a solarfield
(Example Only)
3 MW
3-6 MW
SunFlex Primary Applications
• frequency regulation• contingency service.• Dynamic VAR modes.
Secondary Applications
TIME OF DAY
MW
Load
Solar PV toGrid
Solar PVto Battery
Batteryto Grid
Renewable Ramp Rate SmoothingRenewable Firming and Flexible Peaking Capacity
SunFlex Intelligent Controls Maximize Asset Value
Optimized Control AlgorithmsOptimize algorithms to meet uniqueproject operating requirementsMeet and exceed systemperformance requirements in marketsworldwideWork with customers to optimizeacross grid connection requirements,customer value model, expectedfuture use cases
Patented and proprietary control algorithms
Application Breadth• Renewable integration ranging
from reducing grid integrationissues to creating fullydispatchable solar
• Stacking value streams,including ancillary servicessuch as frequency and voltagesupport
Availability and Performance• Deep integration between
hardware architecture andsoftware design to maximizesystem availability
• Dispatch optimization protectsbatteries to minimizedegradation and extend assetlifetime
Slide 9
MB(SDP1 Mazumder, Bidyut (RC-IN SI DS PA), 19-Sep-19
