Micro-Parallel Inverters (MPI); Intelligent Alerts, … Inverters (MPI); Intelligent Alerts, Smart...

TRC proprietary. Multiple patents pending

Micro-Parallel Inverters (MPI); Intelligent Alerts, Smart Data and a 75% reduction in installation

and activation

Arnold Kravitz VP Commercial Businesses, Technology Research Corporation Clearwater, FL


Taxonomy of a PV investment was the impetus to design the Micro-Parallel Inverter (MPI)

* Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab).

Residential and small commercial systems <10kW • Framing

0.68/W 1.10/W

• Panels 0.70/W 1.00/W

• Inverters 0.70/W 1.00/W

• Installation 1.82/W 2.8/W

• Total cost $ 3.90/W 5.90/W

Installation is largest cost driver by a factor of 2 to 3


1. String inverter - Converts DC to AC for a string of panels

• High voltage DC inputs • PV panels are connected in series. Voltage builds with each

panel. • Conveniently placed near the service box • Smart Data limited • MPPT tracking for the string • String inverter with digital optimizer- adds a component

to each panel to provide smart data, and improved MPPT • Size of a micro inverter (small cigar box) Mounted like a

micro inverter • Provides MPPT tracking and Smart data for each panel • Power generation continues with the loss of any given panel • The string can drop out if an optimizer fails • PLCC communications

MPI’s give designers a new Inverter option


2. Micro Inverter - Converts DC to AC for each panel • Low Voltage DC voltage inputs < 50V • Smallest size • Mounted on the panel or rack • MPPT tracking of the inverter for each panel • Smart data to the individual inverter and panel • Power generation continues with the loss of any given

panel • PLCC, ZigBee and Wi-Fi communications • Web based support and display



3. Micro- Parallel Inverter (MPI) • Converts DC to AC for up to 4 panel • Low Voltage DC voltage inputs < 50V • Each panel handled as an individual • Conveniently placed as desired ( Panel, rack ,roof, or near service box) • MPPT tracking of the inverter for each panel • Smart data to the individual inverter and panel • Intelligent alerts emailed to the maintainer/owner isolates failure to

panel or inverter. • Graceful degradation ( continues to operate with as few as 1 panel

powering the inverter) • Thermal survival mode (throttles power generation to survive

abnormal ambient temperatures) • Remote power throttling by the owner/ or power authority to

mitigate over production



Comparison of the 3 Inverter technology systems

Breaker panel

Grid

DC Optimizers

DC Combiner Inverter Disconnect

Breaker Panel

Grid

Disconnect

EMC

Breaker Panel

Grid

Disconnect

EMC

String Inverter with DC optimizers

µ- Inverter Micro Parallel - Inverter


MPIs provide an advantage over String inverters re; Hardware, cabling, Installation and Maintenance costs

• Simplified low voltage AC cabling • Graceful degradation when panels fail • No DC combiner's or optimizers • Intelligent alerts and diagnostics

Reduce truck rolls • Field reparable components • Self mapping array automatically maps

inverter location to their physical location in the grid map

• Time saving during installation • Eliminates “hunting the field” for the

failed inverter or panel if mistakes occurred during a manual mapping..

• DC optimizers on each panel • provide the smart data to a string array • Increase installation labor • require manual mapping

Breaker Panel

Grid

Disconnect

EMC

MPI

Breaker panel

Grid DC Optimizers

DC Combiner Inverter

Disconnect

Micro Inverter


MPI’s provide an advantage over micro-inverters re: Installation and maintenance costs

• ¼ the units to install • ¼ the units to monitor via PLCC

• 400KW with MPI vs 100KW micro inverter • Self launching web; data to each panel • Self mapping array automatically maps

inverter location to the grid map • Labor and error reduction • Eliminates “hunting the field” for the failed

inverter or panel • Lower cost cabling / grounding system

• MPI 16 panels/ trunk with 1 disconnect • Micro 16 panels has 16 disconnects

• Intelligent alerts diagnostics • Isolates failure to inverter Chanel or panel • Only alerts on serious failures • Reduces truck rolls

• Field reparable

Breaker Panel

Grid

Disconnect

EMC

Breaker Panel

Grid

Disconnect

EMC

µ- Inverter

MPI


Inverter Technology selection based on installation specifics

µ- inverters

Micro- Parallel Inverters ((240V and below)

500 KW

20 KW

Utility level generation

Commercial generation

Residential generation

5 KW

200 KW

1 MW and above

String inverter

Utility Scale Central

Inverter (1000V)

480V and above

240V and below


A new paradigm in inverter technology • Convert 300W per channel • Harvest the maximum amount of available energy. • Expedite installation, and activation, reduce maintenance, reduce repair false alarms

• Self launching easy access open web interface • Self mapping array • Simplified cabling • Remote activation and termination control for the owners • Autonomous system monitoring with automated smart alerts • Does not require the internet for component initiation or re addressing

• Work on or off grid from batteries or worn generators • 50HZ compatible • Up to 200KW 240W installation • Up to ½MW 480V 3 Ø AC with combiner boxes and transformers

Micro Parallel Inverters (MPI)


THREE TYPES MICRO GRIDS CAN BE CONSTRUCTED WITH MPI’S

1. Off grid 2. Grid tied 3. Grid tied with automatic emergency power


Off Grid Micro Grids constructed with MPI’s

• Provides power to a building with out connection to a utility power grid.

• Requires a generator to serve as the grid (fueled or battery).

• If the generator is battery powered a fueled generator or dedicated solar panel is recommended to recharge the batteries due to inclement weather.


Off grid, micro grid architecture

Breaker panels

EMC Internet Server

Remote Web site CAT 6 Ethernet

Transformer 240/120 V coax

30A trunk cable

30A trunk cable

30A trunk cable

Diesel Generator

Sat phone link

Service panels


Off grid, micro grid architecture using battery powered AC generator

30A trunk cable

breaker service panels

EMC

Features 1. Self launching website 2. Auto mapping by

• Using a wizard • throwing breaker • Viewing on the

display the web site 3. Fault detection

• by covering a panel 4. Battery based solution.

48 VDC to 240V AC pure sign wave inverter

48 VDC solar battery charge controller


Grid tied Micro Grids constructed with MPI’s

• Provides supplements solar power to a building that is tied to the utility power grid.

• Anti islanding circuits shuts off the inverters when the grid fails or browns out. • Senses power resonances and shuts the

system down. • critical safety feature that allows power crews

to safely work on restoring power and prevents the


Grid tied micro grid architecture

Master Emergency power Off grid manual transfer switch

Grid

Power Meter Breaker panels

EMC Internet Server

Remote Web site

CAT 6 Ethernet

Grid power

Transformer 240/120 V

coax

30A trunk cable

30A trunk cable

30A trunk cable


3 Φ grid tied micro grid architecture

Master Emergency power Off grid manual transfer switch

Grid

Power Meter 3 phase

EMC Internet Server

Remote Web site

CAT 6 Ethernet

Grid power

Transformer 240/120V

coax

50A trunk cable

50A trunk cable

50A trunk cable

Phase A

Phase C Phase B

3 phase Connector

With PLCC coupling

14’ 3Ø connector cable 28’ 3Ø connector cable


Grid tied with automatic emergency power Micro Grids constructed with MPI’s

• A grid tied system with automatic transfer switches • Automatically disconnects from the grid when the grid voltage drops

below a set level • Automatically then turns on a fueled or battery powered AC generator

• Generator must be of the same size as the anticipated system load • If generator is under sized grid will collapse • This allows the grid tied system to behave as an off grid system • Batteries are preferred as they serve as ballasts during compressor

and A/C startups. • Automatically shuts down should battery level fall below a set

minimum • Restarts after a separate Solar panel recharges the batteries

sufficiently for the generator to create the grid. Wave form that the stimulate. grid tied inverters


Grid tied micro grid with emergency power architecture

Master Emergency power Off grid manual transfer switch Grid

Power Meter

Breaker panels

Internet Server

Remote Web site

CAT 6 Ethernet

Grid power

4.8KW Flex-tech™

coax

30A trunk cable

4.8KW Flex-tech™ 4.8KW Flex-tech™

30A trunk cable

30A trunk cable

Battery Battery Charger

2nd Emergency Power Backup Automatic transfer switch

Diesel Generator

Start/stop Off/on

When grid voltage is low switch to off grid mode

On/off

When grid voltage is low in emergency power then switch to off grid mode

EMC Wave form Generator

Off/on


3 Φ Grid tied micro grid with emergency power architecture

Master Emergency power Off grid manual transfer switch 3 phase

Grid Power Meter

Breaker panels

Internet Server

Remote Web site

CAT 6 Ethernet

Grid power

4.8KW Flex-tech™

coax

30A trunk cable

4.8KW Flex-tech™ 4.8KW Flex-tech™

30A trunk cable

30A trunk cable

Battery Battery Charger

2nd Emergency Power Backup Automatic transfer switch

3 phase Diesel Generator

Start/stop Off/on

When grid voltage is low switch to off grid mode

On/off

When grid voltage is low in emergency power then switch to off grid mode

EMC Wave form Generator

Off/on

Phase B Phase C

3 phase Connector

With PLCC coupling

Phase A


Building a ground mount system

Prep the field Install electrical infrastructure

Install gravel base install the frames

Install the panels Run the cables Install the inverters and power up

Auto map the array


Contact

Arnold Kravitz VP Marketing and Sales

4525 140th avenue N Suite 900 Clearwater, FL 33762 1800 780 4324 x 328 [email protected]


Key MPI features • Installation:

• Modular quick-connect • Physical (75% faster install of

inverters, cables, grounds ,and activation)

• Auto-mapping of all panels/inverters in array & auto reset to quickly reconfigure (patent pending)

• Communication: Via Energy Monitor Controller (EMC)

• Granular autonomous monitoring • Real-time fault alerts to the

panel/inverter level • Data Capacity:

• 4x higher signal packet transfer capability vs a micro inverter

• Full-feature monitoring of panels • 400 inverters (1200 panels)

• Control: • Secure Remote Activation/De-

Activation – (patent pending) • Power Capacity:

• Handles 100w->300w Panels • >300watt capacity per channel; • Reduces $/watt

• Efficiency 96% • High-Heat Tolerant Ruggedized

Design: • Active Thermal Management

eliminates heat-related damage/failure;

• Fail safe self-throttle & restart • Thermal Survival mode (patent

pending

23


Key MPI features • Intelligent fault auditing

• Self-diagnostics • 3 level detection / isolation:

• panel • inverter • System

• Maintenance: • field replacement of inverter

channel • Upgrade:

• remote upgrade of EMS and Inverter firmware

• Extend/optimize effective life of units

• Electronic Monitor Control • Tracking dashboard reporting:

• Layered reporting options. • Private web • Cloud; • Off line

• Monitoring: • real-time energy yield monitoring

• Grid types supported • Grid tie • Off grid Micro-grid • Single Phase • 3 Phase

24



Providing the safe and controlled, generation, distribution, and storage of energy

TRC Commercial Markets • Provide:

• Safe and controlled; generation, distribution and storage of power • High reliability, and High availability products

• Market Segments

1. Mobile Power (Surge protection, Transfer switches, power and water distribution, cord sets) • Vehicle (RV, Marine, Heavy Construction Equipment, Public transport,

Amusement) • Traveling shows and events, (Carnivals, Circus, Concerts, Theater, Celebrations)

2. Electrical Safety (GFCI,ELCI,RCD, HD-Pro, distribution box, voltage booster) • Industrial ,Construction , and manufacturing, equipment and infrastructure • Amusements Safety; lighting and fountain shows • Marina power and water distribution equipment

3. Energy ( High efficiency Solar inverters, cables, connectors) • Grid tied , Emergency and off grid Solar power • 4.8KW to 200KW ( homes to commercial building s, roof top and ground mount)

• Roles • Innovative Design, Engineering, Manufacturer, Logistics, and Support


35 Years of military micro grid dependability

TRC Military products Military Micro grid Power Control and

Monitoring components Mobile Generator Sets Components Battery Chargers Militarized Portable GFCI Complete Control Panels Power Inverters DC Power Supplies

Patco Batteries and Chargers Batteries Rechargeable Li-ION & NiMH

Battery Chargers Li-ION, NiMH, NiCd & Lead Acid

Pack Electronics Battery Charging & Management Circuitry

Complete Power Systems Standard or Customized Solutions

Date post:	08-Apr-2018
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