▲ADI presentation material (Image source: e4ds webinar)

Providing solutions for AC metering, shunt-based, Rogoski and CT systems
We have system solutions for DC fast charging and DC metering applications.

Arrow Electronics (Arrow) shared its system-level solutions for electric vehicle charging applications, along with ADI’s core measurement technology for metering and the latest EV charging trends.

Arrow, which is in charge of distribution for Analog Devices (ADI), held a webinar at e4ds on the 12th with the theme of ‘Introducing ADI’s new electric vehicle charging solution.’

“To meet driver demands for electric vehicle charging, electric vehicle supply equipment (EVSE) is needed everywhere,” Arrow said. “ADI has the technology to combine at the system level for both AC and DC systems, benefiting customers in both residential and public environments.”

EV charging infrastructure comes in two types: AC and DC, each with two levels. As the level increases, the power level increases and the charging time decreases.

The slowest charging is Level 1 AC and uses standard electrical sockets and single-phase supply sources.

Level 2 AC is common in residential and industrial environments.This applies to charging wall boxes that are directly connected to the supply that can be seen.

Level 3 is DC charging, which can be divided into two categories: fast charging in the range of up to 50 kW to 150 kW, and high power range of 150 kW and more than 350 kW.

DC is primarily used in public or industrial environments, but all chargers can connect to different electrical grids, regardless of whether they are in residential, commercial or industrial environments.

Even when connecting to renewable energy such as wind power, it can be connected directly to the grid or to a battery or ESS.

For AC systems, it can be broken down into simple functional blocks, and for power management, ADI has AC-DC supply and conversion components, as well as signal rectification and conditioning solutions, with a diverse portfolio that supports each individual architectural methodology.

The metering block is supported by current and voltage centers and insulation technology and metering chips.

Most of these features are common in DC chargers, and ADI also offers DC metering solutions, the instrumentation technology for metering being ADI's flagship technology.

In particular, AC metering is available independent of the sensors within the system and provides solutions for shunt-based systems, Rogowski systems or Current Transformer (CT) systems.

These products support intermediate certification and can also take advantage of a variety of lobe management, demand response and power quality features that can be added to the system.

In terms of DC metering, it also provides current at the same voltage.

ADI's system is accuracy class B and applicable to various EV, IEC, and NC standards..

ADI also has system solutions for DC fast charging and DC metering applications.

For low power chargers, it is mainly used in Single-phase which uses 120V power in the US, and other regions use 200V, 1~2kW or 3kW.

We supply the ADE9153A or ADE7953 required for this type of environment, and can use one or two ICs in combination.

There are also products that can be applied on shunt-based or CT-based basis for grids using a typical 3-phase 22kW AC wall box.

In industrial Ethernet, which supports communication between systems and platforms, ADI typically supports 485 and 233 signals, but can also provide 5G and wireless mesh solutions.

We have all the signal conditioning and various regulators for power management, as well as supercapacitors that can be used to improve some gas grid systems, and digital isolators, which are one of ADI's main portfolios for use in Europe and other regions.

It also covers other applicable solutions suitable for the system signal chain, such as digital security, power management for power supplies, isolation via communication and power isolators, secure payment, and communications such as RS-485 and Industrial Ethernet.

Additionally, through its acquisition of Maxim, ADI now has a portfolio of MCUs for applications that require a variety of communications and HMI technologies.

In the HMI segment, we have technologies such as GMSL for multi-display, and we also have solutions for cybersecurity and anti-tampering of equipment.

In the case of MCU, AI, Ultra-SA variety of solutions are available, including Cure, low-power products and wireless solutions, and secure payments are possible with the MAX32561.

ADI is focusing on the DC power conversion stage of the DC charger and has formed a dedicated team to study the role of various applications within the ecosystem and the utilization of EV chargers in that system.

The starting point in the grid and energy supply sector could be wind, solar or ESS, which may require AC-DC conversion from the grid or the grid itself may need to generate the AC and DC signals needed for EV chargers.

In vehicles, in particular, V2X scenarios are becoming widespread, and ADI said it is focusing on understanding the role of inverters and motors in vehicles as energy sources, as well as the DC-DC conversion of onboard systems and onboard chargers, their integration and communication methods, and even the chargers themselves.

ADI explained its power quality management solution, saying, “Power quality will soon be applied to the EV charging sector.” “Electric vehicles based on V2X solutions will be connected to the grid, and power supply companies’ utilities will pay attention to the power quality of the batteries.”

For more information on ADI’s technology, including the trends above, watch the e4ds webinar “Introducing ADI’s New Electric Vehicle Charging Solution,” and download the presentation materials.