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EV Charging (Pile) Stations Design Considerations

Introduction to EV Charging (Pile) Station Standards

Learn an overview of global standards and common subsystems within Level 1, 2 and 3 public and residential EV charging (pile) stations.

EV Charging (Pile) Stations Design Considerations

EV Charging (Pile) Station Subsystem Analysis

While an EV charging station (pile) might seem like a straight forward design, there are many challenges to consider when needing to safely control the power delivery. This training module will provide further insights with a subsystem analysis alongside solution examples that help you mitigate commonly overlooked subsystems including public user interfaces, an authentication mechanism and residential communications in EV charging (pile) stations.

EV Charging (Pile) Stations Design Considerations

AC and DC Charging (Pile) Station Design Considerations

Gain a deep dive into common design consideration for a Level 1, 2 or 3 EV charging (pile) station and explore the service equipment block diagram for each.

EV Charging (Pile) Stations Design Considerations

EV Charging Station System Solutions

Explore EV charging (pile) station system solutions from TI’s design library.

Introduction

This section covers wireless network trends, key technologies, and problem statements for smart grid IoT. 

6LoWPAN-based Wireless Network Protocols

This section covers system-level deep dive on key wireless network protocols of 6LoWPAN, RPL, and CoAP for smart grid IoT. 

System-Level Examples for Wireless Networks on Smart Grid IoT

This section covers system-level examples for wireless networks on smart grid IoT. We will provide software- and system-level details for two system examples: 6LoWPAN-Contiki and sub-1GHz sensor to cloud industrial IoT gateway reference design. 

Summary

This section summarizes the wireless network challenges and solutions for a smarter grid IoT training series. 

Introduction

This section covers what is meter tampering, why is this a problem for utility providers, and some common ways a meter is tampered.

Electrical Fundamentals and Need for power systems protection

Welcome to the world of Power Systems. The first part of the session focuses on Introduction to Power Systems, Goal of Power systems protection, fundamentals of Electricity, AC or DC, Importance of electricity, Power system voltage levels and consumers of electricity. Need and Complexities in protection of power system primary Equipment like Generators, Motors, Transformers and Circuit Breakers and finally analysis of what can go wrong on a transmission line.

Introduction to Protection Relay and Power Systems Faults

Second part of the session explains use case for protection relay, the sequence of events during a fault, Fault Types and the approach for fault analysis. The Session also explains commonly used protection relays and application of different relays along the grid for protection of Generation, Transmission, Distribution and Industrial equipment, Evolution of protection relays from traditional mechanical, static and the current generation digital relays.

AC Analog Input Module Architecture (AIM)

The third part of the session provides details on the need to focus on AC analog input module and its use cases in different types of protection relays, Different types of current sensors and the use cases for these sensors including key advantages and dis-advantages. Explains AC analog input module architecture including block diagram showing the critical products and EERD with different subsystems identified showing different approaches for designing an AC AIM.

Selection of Key Components (ADC, Signal Conditioning Amplifier) for AC Analog Input Module (AIM)

Fourth part of the session explains representation of Voltage or Current waveforms in Time and frequency domain and also looks at the customer use case for application of Time or frequency domain Analysis. The session also explains different sampling approaches like Simultaneous sampling, Coherent sampling, Oversampling to improve system performance, criteria for ADC selection and choice between SAR and Delta-Sigma ADCs. There is a list of TI products that can be considered during the design of the AIM and finally provides overview for Focus ADCs for this session.

Design Details for TI design TIDA-00834 High Accuracy Analog Front End Using 16-Bit SAR ADC with ±10V Measurement Range Reference Design

Fifth part of the session will focus on providing detailed information on TIDA-00834 TI design.  The initial slides cover Design Overview, Features, Key Components, test Setup, market differentiators, Block Diagram with links to relevant TI Designs, EVMs and TI product used in this design. Circuit representation and detailed description for ADC interface, Voltage and Current measurement and Power supply are provided. Graphs for Voltage and Current measurement accuracy are shown; along with collaterals and TI design links that can be referred by customers during design.

LC-sensing solution with TI FemtoFET and CC1350 Sensor Controller Engine

Introduction to mechanical water meters and EN ISO 4064

This section covers the basics of mechanical water meters and the principle of operation for impeller based water meters. There are multiple standards for water meters around the world; the EN ISO 4064 is relevant to all European countries and has been adopted under a different name in some other regions as well.

LC-sensing solution with TI FemtoFET and CC1350 Sensor Controller Engine

Inductive sensing with TI FemtoFET and CC1350 Wireless MCU

Water and heat meters share multiple system building blocks, such as the metrology sub-system and the application sub-systems, the Wireless communications part, the InfraRed optical port or the power solution. In this section, we will cover a new ultra-low cost single-chip LC-sensing solution utilizing the CC1350 Wireless MCU and its Sensor Controller Engine. Two external LC-tanks with a TI FemtoFET device each implement two rotation detection sensors, which measure the rotation of a half-metal/half-nonmetal disc, often used in mechanical water meters.

LC-sensing solution with TI FemtoFET and CC1350 Sensor Controller Engine

In-system tunable Multiband Sub-1GHz RF sub-system

Multiband Sub-1GHz RF sub-systems

LC-sensing solution with TI FemtoFET and CC1350 Sensor Controller Engine

Bidirectional InfraRed PHY communication with a single IR LED

Some EU standards like EN1434-3 for heat meters require optical interface as per EN62056-21, where two separate IR LEDs are used (one for receive and one for transmit direction). TIDA-01212 shows an alternative approach, which uses a single IR LED to implement a bi-directional IrDA PHY link with 9.6 kbps in half-duplex mode. The design approach can  the system reduce cost of any smart (sub-)metering device by replacing the legacy optical IrDA PHY modules with two separate LEDs.

LC-sensing solution with TI FemtoFET and CC1350 Sensor Controller Engine

7-segment LCD control thru SW and GPIOs

This module covers the “Innovative 7-Segment LCD Control Using GPIO Pins and SW” section of the “Single-chip Smart Water meter with Dual-band RF link and InfraRed port” training series.

Detecting case tamper attacks using inductive switches

The first line of defense against tampering by bypassing current, reversing connections, and disconnecting leads is the meter case. Due to this, it is common for utilities to require some form of intrusion detection system to detect when someone opens a case.  In this section, we will cover how to detect someone trying to open the case of a meter.

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