power anytime: using battery backup with a microinverter pv system

#SolarWebinar

#SolarWebinar

q  This webinar will be available afterwards at solarpowerworldonline.com & email

q  Q&A at the end of the presentation q  Join the conversation at #SolarWebinar

Before We Start

#SolarWebinar

Meet your Speakers

MODERATOR FEATURED SPEAKER

Kathie Zipp Managing Editor Solar Power World

Alan Santos-Buch Renewable Energy Product Specialist Sensata Technologies

#SolarWebinar

WELCOME

POWER ANYTIME: USING BATTERY BACKUP WITH A

MICRO INVERTER

PRODUCT TRAINING

Sensata Proprietary Information – Strictly Private

5

Date, Title, Initials

#SolarWebinar

Agenda and Learning Objectives

•  Introduction to Sensata Technologies

•  Installing a battery backup system with grid interactive inverters today – What is AC coupling ?

•  Introduction to the Magnum Energy MicroGT-500, a new paradigm • Design scenarios and considerations • Product availability and support

• Summary


6


#SolarWebinar

Sensata Technologies what we do

•  One of the world's leading suppliers of sensing, electrical protection, control and power

management solutions with operations and business centers in 11 countries.

•  Key player in the automotive, appliance, aircraft, industrial, military, heavy vehicle, heating, air-

conditioning and ventilation, data,

telecommunications, recreational vehicle and marine markets.

OUR DEVICES improve safety, efficiency and comfort

for millions of people every day.


7


#SolarWebinar

Magnum Energy Today a Product Brand of Sensata Technologies


8


#SolarWebinar

Renewable Energy Products


9


#SolarWebinar

What is AC coupling ? --When a utility power outage occurs, grid interactive inverters are required to shut down to prevent islanding. --Homeowners soon realize that the essential loads in the home are no longer powered, and all the potential energy from the solar array is being wasted. --AC Coupling is achieved when the AC outputs of the battery based inverter and micro inverter land on the same output bus (essential loads sub-panel). --Magnum battery-based inverters can be installed in a way to utilize the power from those expensive PV modules that is being wasted during a power outage. --The MS-PAE inverter charger can synchronize and work with virtually all grid interactive string and micro inverters.


10


#SolarWebinar

What is AC coupling ? --AC coupling allows the use of utility interactive inverters with battery based bi-directional inverters and battery based PV systems.

--When utility is lost, the AC outputs of both the micro inverter and battery based inverter “couple” together in the essential loads sub panel.

--AC coupling allows the homeowner to utilize the expensive PV array to power the essential loads and charge the batteries during a utility outage.

--The greatest challenge in an AC coupled design is regulating the charge to the battery bank.

--We believe micro inverters offer the greatest value proposition, uncompromised safety built in and flexibility in every AC coupled application.


11


#SolarWebinar

Advantages of installing micro inverters with battery back-up using the MS-PAE inverter charger

Easier to install, simpler to program, flexible and safe out of the box •  Higher efficiency during sell back mode >95% •  Utilizes harvest from RE source during outages

•  Lower cost than DC coupled/separate systems

•  Configured at higher voltages/lower BOS cost

•  Rapid shutdown and AFCI built in (2014 NEC compliant)

•  No additional costs associated with 1st responder protections


12


#SolarWebinar

Considerations today • Magnum’s are UL1741, not grid interactive • Magnum inverter should be 10% larger • Some brands of GT inverters are sensitive • DC or AC diversion controller and loads required to control battery charging • Magnum inverters utilize a frequency shift to prevent battery over-charging • Hz shift should only be used at failsafe feature • DL’s and controllers or black out relays are primary method to control charging • When grid is lost, both inverters disconnect and resynchronize with MS-PAE


13


#SolarWebinar

Introducing the New MicroGT-500 Dual MPPT Micro-inverter

• Supports two PV modules per inverter

• Module level electronics mitigates shading issues and increases system output and reliability

• UL1741, NEC690.12 compliant, safe and ready for deployment in all leading North American markets

• Optimized to regulate Magnum’s battery-based inverters when in AC coupled mode by tapering the charge based on battery SOC…NO load diversion control required.

• Unified web-based dashboard for monitoring production of the microinverter as well as information from the Magnum MS-PAE battery-based inverter/charger

• Daisy chain installation, no trunk cable required


14


#SolarWebinar

How does frequency shift work ? •  IEEE Standards require tight grid frequency and voltage tolerances in

order to connect to the grid with interactive inverters. •  Frequency Shift is enabled with the ME-ARC50 when the battery type is set

to Custom and activates when the voltage condition of the battery bank being charged is pushed +2 Vdc above the custom absorb set-point for 48V PAE models and +1Vdc for 24V PAE models.

•  The MS-PAE targets the absorb set point and when the Voltage exceeds the custom absorb set point, frequency shifts in stages to reduce the PV source circuit output.

•  The MicroGT, communicating through a connection to the Magnum network, tapers down the output to the essential loads subpanel


15


#SolarWebinar

Programming Simplified


16


#SolarWebinar

How to setup Frequency Shift using the ME-ARC •  Setup menu •  Battery Type = Custom •  Set Absorb Voltage •  AC in Control set to Auto •  Turn off Search Watts


17


#SolarWebinar

Parts customers will need •  From Magnum Energy:

•  MicroGT-500 •  MagWeb-GT (ECU) •  MS-PAE inverter charger (24V or 48V) •  MMP Magnum Mini Panel breaker enclosure with back-plate (BP-MMP) •  ME-ARC50 advanced remote control •  ME-BMK-NS battery monitoring kit (shunt is included in MMP)

•  Other parts to source:

•  PV modules and racking •  Junction box (if more than 1 string) •  AC conductors that run outside of our MMP enclosure •  Essential loads sub-panel •  DC cables and batteries (VRLA–AGM absorbent glass mat) 3-6 hours autonomy •  Certified installer/electrician


18


#SolarWebinar

MS - PAE Series Inverter/Charger PSW 120/240 Split Wave Output Always


20


#SolarWebinar

MMP INSTALLATION PROCESS STEP 1

•  Mount the BP-MMP

•  Mounts on 16 inch centers

•  All bolt locations are pemnuts


21


#SolarWebinar

STEP 2

•  Start 4 – ¼ -20 bolts

•  Use keyholes to mount MMP to the back plate •  Tighten the bolts


22


#SolarWebinar

STEP 3 Set the inverter on top of MMP •  Install 4 ¼ -20 bolts and tighten •  Install flange nuts to DC on inverter •  Install AC wiring •  Install DC battery wiring •  Install optional DC breakers


23


#SolarWebinar

STEP 4

•  Install the “Hood”

•  Install remote (optional) •  Mount front cover

•  Stand back and admire your work


24


#SolarWebinar

AC Coupled line diagram with MicroGT-500


25


#SolarWebinar

Storage ready grid tie line diagram


26


#SolarWebinar

Mag Web GT (ECU) Dashboard


27


#SolarWebinar

Summary •  Safe—meets all NEC requirements out of the box, protecting 1st responders and homeowners alike

•  Economical—among the lowest cost per Watt offerings for sustainable energy today

•  Simple to install—2 PV modules per inverter, no trunk cable •  NO diversion controller and loads required (MicroGT optimized to taper charge) •  MLPE are more efficient in shading or cloud cover scenarios

•  Storage Ready--combine the MS-PAE platform to backup later if it is not in the current budget

•  Among the finest aftermarket customer support and warranty in the industry

#SolarWebinar

Questions?

MODERATOR FEATURED SPEAKER

Kathie Zipp Managing Editor Solar Power World

Alan Santos-Buch Renewable Energy Product Specialist Sensata Technologies

#SolarWebinar

q  This webinar will be available at solarpowerworldonline.com & email

q  Join the conversation at #SolarWebinar

q  Connect with Solar Power World

q  Discuss this on EngineeringExchange.com

Don’t Forget!

#SolarWebinar