Smart Multi-User EV Charging System

SMART MULTI-USER EV CHARGING SYSTEM

The EVOLUTE™ is a Smart Multi-User Electric Vehicle Charging System, designed and developed to address the unique challenges associated with deploying Electric Vehicle Supply Equipment (EVSE) in both new and existing Multi-User Residential Buildings (MURBs). Currently, the main challenges facing this sector are limited capacity, remote control, billing, and consumer freedom. While other systems address some of these issues, the Evolute is the only system that addresses all four. The Evolute’s advantage over other systems is its agnostic charging station compatibility; this gives consumers full freedom of choice, while still providing an interactive app to control, monitor and pay for usage. The Evolute software includes a cloud-based dashboard for administrators and management, with tools for remote control, monitoring, billing, and account management.
Cost of Infrastructure – In a retrofit Condo, only owners tapping into the system will pay for it. The cost of a 20 or 32 vehicle system can be divided amongst all users. The Condominium can charge end-users a one-time connection fee that represents 1/20 or 1/32 of the cost of the supply and installation. In a new construction Condo, the cost per parking spot of the system represents a fraction of the potential sell price for an EV ready parking spot. In new and existing rental and commercial buildings, the corporation can charge substantial monthly fees in addition to the electricity consumption costs.
Evolute is designed, developed, and manufactured in North America using cutting edge innovation and technology.
Powered with Eaton Technology, Intelligence by EVdirect
KEY FEATURES

COMPATIBILITY

SMART MULTI-METERING
Built-in individual smart meters track the usage of each owner’s consumption as well as the entire system. The data is stored in a secure Canadian-based cloud server.

SURGE PROTECTION - OPTIONAL
The entire system and downstream charging stations are protected from unwanted electrical surges that may occur in the building. Many buildings already have system wide protection.

SEAMLESS OPERATION

LOAD MANAGEMENT

TOTAL CONTROL

MONITORING + BILLING

NO CONTRACTS + FREE DATA
There are no contracts to sign and rates can be adjusted at any time.
HOW IT WORKS

SYSTEM FLOW
The EVOLUTETM is connected to the main switchboard in the main electrical room with a new or existing fused switch. All system components are installed in an unused corporate space in the garage, storage room or anywhere feasible.

IMPLEMENTATION
- Site visit and audit of electrical systems is arranged
- Proposal, load assessment, drawings and an estimate are given to the board
- Board meetings, Zoom meetings, and owner’s meetings are scheduled
- Owner’s survey is sent out to determine interest and adoption
- Interested owners provide parking spaces and specifics for a “Last Mile” estimate
- Management confirms all owners participating in initial bulk install
- EVdirect electricians begin the system and end-user installation
- System is energized, commissioned and inspected by ESA

OWNER ACCESS
- On-boarding email received
- Account/passcode created
- Fees paid
- Station energized
- Charging begins
EVOLUTE PRODUCTS

EVOLUTE EVO-40042
SPECIFICATIONS
400A, 42cct, 208Y/120V 3Ph 4W 72”H x 28”W x 5.75”D Main Lugs – Bottom Cable Entry
HARDWARE/SOFTWARE – cUL/CSA
- Multi-Metering Module
- Breaker Control Bus
- Admin Dashboard
- Fixed CT Rails
- Ethernet Gateway
- End-user App
Max panel capacity vs Max active charging | 20 CAR CAPACITY | Maximum Simultaneous Charging | |
Voltage / kW | 208V | 6.66kW | 8.32kW |
EVSE Breaker Size | 40A Breaker | 50A Breaker | |
When using a Step-down Transformer | 75 kVA | 10 | 6 |
112.5 kVA | 15 | 12 |
|
When using a Main Breaker @ 208-240V | 200A | 7 | 6 |
250A | 9 | 7 | |
400A | 15 | 12 |

EVOLUTE EVO-60072
SPECIFICATIONS
600A, 72cct, 208Y/120V 3Ph 4W
90”H x 28”W x 5.75”D
Main Lugs – Bottom Cable Entry
HARDWARE/SOFTWARE – cUL/CSA
- Multi-Metering Module
- Fixed CT Rails
- Breaker Control Bus
- Ethernet Gateway
- Admin Dashboard
- End-user App
Max panel capacity vs Max active charging | 32 CAR CAPACITY | Maximum Simultaneous Charging |
|
Voltage / kW | 208V | 6.66kW | 8.32kW |
EVSE Breaker Size | 40A Breaker | 50A Breaker | |
When using a Step-down Transformer | 112.5 kVA | 15 | 12 |
150 kVA | 20 | 15 | |
When using a Main Breaker @ 208-240V | 400A | 15 | 12 |
500A | 19 | 15 | |
600A | 24 | 19 |
DYNAMIC LOAD THROTTLING ARCHITECTURE RESPONSE SYSTEM

HOW DOES IT WORK
Dynamic Load Throttling Architecture Response System (DLTARS) allows more charging stations to be installed than the peak capacity of the building can handle. DLTA
RS monitors the main electrical service of the building and dynamically throttles down/up the Evolute’s upper power limit during peak circumstances. All Evolute panels are networked together with Cat5 wiring, they communicate with each other, and throttle limits based on live active users. Once power in the building goes below the preset values, all Evolute panels will function normally.

FUNCTIONALITY
A single master panel will communicate with any number of auxiliary panels to control their load shedding thresholds. Each panel, including the master panel, can still operate individually and separately from DLTARS if desired. Additionally, panels do not need to be the same size or capacity, as the system will dynamically adjust load shedding limits based on each panel’s preset configuration.

LOAD SHEDDING ALGORITHM
The dynamic load shedding algorithm is based on the defined amps limit of the building. A soft current limit for the entire DLTARS system is then set at 80% of this building limit. Furthermore, the load shedding limit for each individual panel will begin to lower exponentially after monitored building current is seen exceeding 85%** of the soft limit (**percentage subject to change). Finally, the logic will dynamically adjust individual upper load limits based on each panel’s load capacity and active users.

FRONTEND CONTROL

WHEN TO IMPLEMENT THE DLTA
RS SYSTEM
The DLTARS system can be installed at the same time as the Evolute panel installation or later as a retrofit. Hardware and software components can be added at any time. The same applies for the interconnected wiring, it can be added at any point that makes sense for both existing and new construction applications. DLTA
RS should be implemented when there is a concern that the existing power within a building will not be sufficient for demand based on peak values.
EVOLUTE INTELLIGENT SOFTWARE

Each Evolute has a certain amount of power allocated to it for EV charging, typically this power is enough to allow half, a third or a quarter of the total connected cars to charge simultaneously. When the upper power limit is reached, the next car that comes to charge will be placed in a queue, and 2 parameters must be met before that car will start charging; 1) Is the car requesting power? 2) Have connected cars achieved a pre-established initial block of energy? If the answer is Yes to both, the car that started charging first, in relation to all other cars, will be removed from the power, allowing the new car to start charging. The new car will have an opportunity to achieve its block of energy before it is removed, if need be. The car that was removed now enters its queue for sharing. Cars will be rotated around in this way throughout the charge cycle of 8 to 12 hours, ensuring that all cars receive a minimum of 50% of the total charge cycle. Cars will remain connected and charging if the upper limit of each panel is not reached and will only drop off when the battery is full, or the owner disconnects their car.

PROGRAMMABLE LOGIC CONTROLLER
The PLC controls all aspects of the panel’s automated functionality. It is connected via ethernet connection to the meter to receive data about power usage throughout the panel. It then uses this information for managing what breakers are enabled or disabled at a given time, while gradually cycling through users based on the implemented load shedding algorithm and current user configurations. The PLC also receives commands from the frontend control allowing loads to be remotely controlled and monitored

GATEWAY

SOFT BREAKER IMPLEMENTATION
To avoid overcurrent scenarios and tripping the physical thermal breaker, software-based breakers have been implemented to control automatic disabling of the remote-controlled breakers. In the event that a breaker is automatically disabled, an email alert is sent to the support team. Once the issue has been resolved the breaker can be turned on remotely by a superuser. By default, these soft breakers are set to be triggered if the detected current through a given breaker exceeds 5% of its upper limit. In the case where a 40A breaker installed, the breaker is disabled if readings exceed 32A + 5%. The 5% threshold can be adjusted depending on the scenario.
APPLICATION VISUALIZATIONS

UNDERSTANDING TIME-BASED SHARING FOR EV CHARGING INFRASTRUCTURE USING A STANDARD 40A BREAKER, DELIVERING 32A @ 208V = 6.7kW
The main issue surrounding EV infrastructure is limited power, the question is how to take the available power and optimize it without affecting EV drivers’ ability to charge when they need to, and drive as they please. One hour of charging at 6.7kW = 6.7kWh; this is a function of power consumed over time. The Evolute™ System is designed to deliver full power (6.7kW) during a charging session, as the power-sharing aspect is related to how much time or kWh each user will receive during a typical charging period. Based on a 12 hour span from 6PM to 6AM, and a 1:2 ratio (meaning doubling available power), each user can expect to receive a minimum of 6 hours at full amperage, resulting in 40kWh per day. It is rare that an EV driver would require this amount of charge time per day, which leads to the discussion around further optimization of time per driver. The Toronto and Vancouver Green Standards have narrowed down their minimum requirements to 16kWh and 12kWh during an 8 hour period. At full delivery of power (6.7kW), it will take 2-2.5hrs of charging to achieve these green standards, leaving lots of time to share the remaining available power. Other ratios may better suit the needs of the condo, all depending on how much available power there is and how to distribute it fairly and economically to as many cars.
Below are examples of how many cars can be connected to a power source with different ratios of time-based power-sharing | ||||||||
---|---|---|---|---|---|---|---|---|
Available Power | No Sharing | 2 x Sharing | 3 x Sharing | 4 x Sharing | Toronto Green Standard Minimum Requirements 16kWh over 8hr period | Vancouver Green Standard Minimum Requirements 12kWh over 8hr period |
||
kVA | kW | 100% Amps @ 208v | Minimum guaranteed block of time/kWh that each user will achieve if all users were to charge simultaneously for a 12 hour period. On average EV drivers are only charging 1-3 hrs per night, 3-4 times a week, leaving a lot more power for those who require it. |
|||||
12hrs = 80kWh | 6hrs = 40kWh | 4hrs = 26.8kWh | 3hrs = 20kWh | 3.6hrs = 24kWh (over a 12hr period) | 2.7hrs = 18kWh (over a 12hr period) |
|||
75 | 67 | 208 | 10 | 20 | 30 | 40 | 33 | 44 |
100 | 90 | 278 | 13 | 27 | 40 | 53 | 45 | 60 |
112.5 | 101 | 312 | 15 | 30 | 45 | 60 | 50 | 67 |
150 | 135 | 416 | 20 | 40 | 60 | 80 | 67 | 90 |
175 | 157 | 485 | 23 | 47 | 71 | 94 | 78 | 104 |
200 | 180 | 555 | 27 | 54 | 81 | 107 | 90 | 120 |
225 | 202 | 625 | 30 | 60 | 90 | 120 | 101 | 134 |
250 | 225 | 695 | 33 | 67 | 102 | 134 | 112 | 150 |
275 | 248 | 765 | 37 | 74 | 112 | 148 | 124 | 165 |
300 | 270 | 830 | 40 | 80 | 120 | 160 | 135 | 180 |
350 | 315 | 970 | 47 | 94 | 143 | 188 | 157 | 210 |
400 | 360 | 1110 | 54 | 108 | 163 | 215 | 180 | 240 |
450 | 405 | 1250 | 60 | 121 | 184 | 242 | 202 | 270 |
500 | 450 | 1385 | 68 | 136 | 204 | 269 | 225 | 300 |
550 | 495 | 1525 | 74 | 148 | 225 | 296 | 247 | 330 |
600 | 540 | 1665 | 81 | 162 | 245 | 323 | 270 | 360 |
650 | 585 | 1800 | 87 | 175 | 265 | 350 | 292 | 390 |
700 | 630 | 1945 | 94 | 189 | 286 | 377 | 315 | 420 |
750 | 675 | 2080 | 101 | 202 | 306 | 404 | 337 | 450 |
800 | 720 | 2220 | 108 | 216 | 327 | 431 | 360 | 480 |
850 | 765 | 2360 | 114 | 228 | 347 | 458 | 382 | 510 |
900 | 810 | 2500 | 121 | 243 | 368 | 485 | 405 | 540 |
950 | 855 | 2635 | 128 | 256 | 388 | 511 | 427 | 570 |
1000 | 900 | 2775 | 135 | 270 | 405 | 538 | 450 | 600 |
UNDERSTANDING SHARING RATIOS AND SIMULTANEOUS CHARGING ON A PANEL LEVEL
EVOLUTE-40042 400A rated | EVOLUTE-60072 600A rated | |||||
Max panel capacity vs Max active charging | 20 CAR CAPACITY | Maximum Simultaneous Charging | 32 CAR CAPACITY | Maximum Simultaneous Charging |
||
Voltage / kW | 208V | 6.7kW | 8.3kW | 208V | 6.7kW | 8.3kW |
EVSE Breaker Size | 40A Breaker | 50A Breaker | 40A Breaker | 50A Breaker | ||
When using a 600-208V Transformer | 75 kVA = 208A | 10 | 8 | 112.5 kVA = 312A | 15 | 12 |
112.5kvA = 312A | 15 | 12 | 150 kVA = 416A | 20 | 16 | |
When using a Main Breaker @ 208V | 200A@80% = 160A | 7 | 6 | 400A@80% = 320A | 15 | 12 |
250A@80% = 200A | 9 | 7 | 500A@80% = 400A | 19 | 15 | |
400A@80% = 320A | 15 | 12 | 600A@80% = 480A | 24 | 19 |
20 Vehicle System
EVOLUTE-40042 using 40A breakers
Various Transformer and/or Breaker sizes | 75kVA = 208A![]() | 112.5kVA = 312A![]() | 200A = 160A![]() | 250A = 200A![]() | 400A = 320A![]() |
Simultaneous users | 10 | 15 | 7 | 9 | 15 |
Waiting in queue | 10 | 5 | 13 | 11 | 5 |
Total # of users | 20 | 20 | 20 | 20 | 20 |
Sharing ratio | 1:2 | 1:1.3 | 1:3 | 1:2 | 1:1.3 |
Adding a 10 user Auxiliary panel to share the same power | |||||
Simultaneous users | 10 | 15 | 7 | 9 | 15 |
Waiting in queue | 20 | 15 | 23 | 21 | 15 |
Total # of users | 30 | 30 | 30 | 30 | 30 |
Sharing ratio | 1:3 | 1:2 | 1:4 | 1:3 | 1:2 |
Adding a 20 user Auxiliary panel to share the same power | |||||
Simultaneous users | 10 | 15 | 7 | 9 | 15 |
Waiting in queue | 30 | 25 | 33 | 31 | 25 |
Total # of users | 40 | 40 | 40 | 40 | 40 |
Sharing ratio | 1:4 | 1:2.6 | 1:5.5 | 1:4 | 1:2.6 |