EV Charging and Testing
Efficiency improvements in the development and compliance cycles mean a faster route to production and sales. We can help you get there. Yokogawa Test&Measurement has the tools that enable test engineers to more effectively analyze modern electric charging systems, from board level to systems level. Whether benchmarking efficiency, troubleshooting power electronics, or ensuring compliance, our comprehensive suite of solutions for EV charging systems covers it all.
Charging systems require specialized instrumentation purpose-built to perform key measurements at a system’s input and outputs. Selecting the best instrument for each application depends on the level of accuracy required, the number of channels needed, and the type of signal being acquired.
Choosing the Right Instrument for Power Quality and Energy Efficiency - Power Compliance, Efficiency, and Harmonics Tests
Application Note
Power quality, power efficiency, and power compliance are terms often used interchangeably, but actually have different meanings depending on the industry being referenced. Three variables to consider when choosing the best instrument for power compliance and power quality measurements are measurement type, measurement standard, and instrument type. This application note defines these variables and provides guidance to make the most accurate power quality, efficiency, or compliance measurement.
Read the App Note
Power Quality and Energy Efficiency for Power Measurements
White Paper
More than 40% of the total energy consumed in the United States is used to operate buildings, with most of that energy consumed by appliances and building-related equipment.
This white paper demonstrates the close relationship between power efficiency and power quality and identifies causes and types of power quality issues.
Read the White Paper
eBook
Electricity Applied
Electrical systems designed for efficiency in the >90% range require specialized analyzers to properly measure small energy losses in complex systems. Yokogawa provides guaranteed power accuracy across the entire bandwidth range to ensure the most accurate efficiency calculation.
Click to learn more.
Webinar
Harmonics
Concerned with voltage and current harmonics on your product's power system? There are numerous power quality standards with specifications and limits for harmonic distortion. Gain insights on the design, validation, and production testing processes through the fundamentals of harmonics, measurements on distorted waveforms, and instrument considerations.
Click to learn more.
Case Study
Solar Team Twente
Learn about the RED-E car from Solar Team Twente, which achieved its best performance ever, and find out how tiny improvements in the efficiency of a motor and batter-management syste can make the difference between winning and losing.
Click to learn more.
"I owe my career to T&M"
It’s not an exaggeration to say I owe a good bit of my career success to Yokogawa Test&Measurement. By using their ScopeCorders that combine the best parts of an oscilloscope and DAQ, projects that once took weeks across multiple instruments suddenly only took a few hours with just one instrument. The impact on what I could accomplish really was quite remarkable, and my ability to accurately complete projects in record time made me look incredible. No matter how complex or convoluted the task, the ScopeCorders never fail to easily handle anything I throw at them. They’re amazing instruments and I tell others about them every chance I get.
—Kenneth Shoemaker
Automotive Industry Consultant/Owner at Panama Prototypes
Automotive Industry Consultant/Owner at Panama Prototypes
Power Compliance
Industry standards such as IEEE, CE, IEC, and MIL-STD dictate testing procedures and limits for passing criteria for EV charging systems. Yokogawa Test&Measurement instruments are certified to meet these requirements to ensure that EV charging systems need only be tested once.
How to Measure Standby Power Using Power Consumption Measurement Software
Video
The Power Consumption Measuring Software from Yokogawa Test&Measurement provides a comprehensive solution for standby power testing and meets the requirements of IEC 62301:2011 Ed2.0 – Household electrical appliances (measurement of standby power)and EN 50564:2011 – Electrical and electronic household and office equipment (measurement of low power consumption). In this video, application engineer Kourtney Morrison demonstrates how to use the software for easy standby power measurement.
Watch the Video
IEC62301 Standards Testing for Standby Power Measurement?
Application Note
Energy consumption in low-power and standby modes is recognized as an important issue due to increased awareness that energy resources are becoming more limited and the demand for energy-saving household electrical appliances continues to grow. Internationally recognized standard IEC62301 Ed2.0 (2011)defines standby mode as the lowest energy consumption of an appliance not performing its main function, when connected to the mains, and also defines the test methods and requirements for both the mains supply and the test equipment.
Read the App Note
Capture and Measure Transient Phenomena on Power Signals with a Power Scope
Video
In several applications, especially those testing AC power to a standard such as IEC61000-3-11, voltage and current signals must be monitored for major dips and/or swells in the signal. This can be done with instruments capable of reporting rms values, including power analyzers, traditional oscilloscopes, and some data acquisition systems. To properly test to a standard, however, the instrument must have an accuracy spec that is traceable back to a national standard of calibration such as ISO17025 or NIST.
View the Video
For Standby Power IEC62301 Ed.02 (2011) & EN 50564:2011
For MIL-STD-1399 Section 300B
For IEC Harmonics (EN61000-3-2/IEC61000-3-2, EN61000-3-12/EN61000-3-12, EN61000-4-7, JIS C61000-3-2, JIS C61000-4-7)
For IEC Flicker (EN61000-3-3/IEC61000-3-3, EN61000-3-11/EN61000-3-11, EN61000-4-15/IEC61000-4-15)
For Standard Performance Evaluation Corporation (SPEC)
For UL1741SA
Still not certain which instrument works best for your EV charging system power measurement needs?
Still not certain which instrument works best for your EV charging system power measurement needs? Click the "Live Chat" button on the side of the screen to discuss your needs with a Precision Maker, or read the app note Choosing the Right Instrument for Power Quality and Energy Efficiency - Power Compliance, Efficiency, and Harmonics Tests. In this document, the variables of measurement type, measurement standard, and instrument type are defined based on industry-specific requirements, ensuring you make a fully-informed selection that meets your needs.
Overview:
This application note details the process for measuring and verifying proper motor function using a power analyzer, and how to troubleshoot common errors in the measured output.
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Measurement guidance related to field-oriented control (FOC) of electric motors with example use cases that illustrates how this is accomplished using a power analyzer and/or a ScopeCorder. Specifically addressed are direct and quadrature currents of a surface-mounted permanent magnet motor (SMPM) with field weakening applied. The techniques illustrated can also be applied to other FOC variables, algorithms, and motor technologies.
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To best utilize SiC devices for improved energy efficiency in equipment, it is important to optimize the internal device peripheral circuits in the inverter according to the device characteristics.
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Designing an instrumentation system for high current measurement requires careful consideration of the trade-offs associated with each type of sensing device. The purpose of this application note is to help engineers understand the sensing choices available and the corresponding trade-offs with each technology.
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In this application note you will learn when and how to use different methods to connect a current transformer to a power analyzer.
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With the increased demand in electric-hybrid vehicles, the electromechanical designs of in-vehicle systems are becoming more sophisticated and there has been a demand shift towards high efficiency brushless direct current motor (BLDC) implementation. Think of motorized seat adjustment, electric window, power steering, HVAC fans, pumps, etc. In many of these systems various types of motors are used as actuators; more specifically, 3-phase BLDC motors are gaining popularity as they provide these important advantages:
- Improved speed vs torque characteristics
- High dynamic response
- High efficiency
- Extended speed ranges
- Long operation life
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How can I capture data from motion sensors synchronized with other analog data? The Yokogawa ScopeCorder series of instruments feature input modules and functions to make this possible.
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Use built-in calculations to analyze motor rotor position of Brushless DC motors (BLDC) and Permanent Magnet Synchronous Machines (PMSM) and find the relative angle between the rotor and position sensors such as encoders or resolvers
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Standards driving energy efficiency classifications are a driving force behind the development of the next generation of motor and drive technologies. Learn more here.
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Government agencies that define the standardization of energy efficiency metrics continue to be a driving force behind the development of the next generation electric vehicle powertrains. These metrics require manufacturers to have high confidence in their measurements and motivate the optimization of efficiency.
Overview:
- Motor testing, variable speed drive testing procedure
- AC, DC, and power measurement
- Precision measurements on motors and VFD systems
- How to calculate energy efficiency
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The objective of this paper is to show the close relationship between efficiency and power quality, and provide education on the causes of power quality, types of power quality issues, and provide guidance on measurement considerations.
Training Module
Overview:
Part 1 - Part 7 of the Yokogawa Test&Measurement IS8000 Integrated Test and Measurement Software Platform training module series. These videos provide a big picture look at the software.
Training Module
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Part 8 - Part 16 of the Yokogawa Test&Measurement IS8000 Integrated Test and Measurement Software Platform 20-video training module series. These trainings detail waveform display settings and analysis options.
Training Module
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Part 17 - Part 20 of the Yokogawa Test&Measurement IS8000 Integrated Test and Measurement Software Platform training module series. These videos provide information on some additional features including PTP synchronization, report generation, screen capture, and high-speed camera synchronization.
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10-video training series from Yokogawa Test&Measurement that covers the basics of power analyzers including an overview of our power analyzers, their theory, wiring, filters and sync source, and voltage and current ranges.
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Video training series for WT5000 Precision Power Analyzer from Yokogawa Test&Measurement: Power analyzer overview of front and back panel inputs and element types.
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Yokogawa Test&Measurement WT5000 Precision Power Analyzer training module series: Setup menu including basic setttings and advanced options
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Yokogawa Test&Measurement WT5000 Precision Power Analyzer training module series. These videos go over the settings in the computation/output tab of the setup menu.
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Yokogawa Test&Measurement WT5000 Precision Power Analyzer training module series: utility menu which includes system overview, remote control, upgrades, and more.
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Yokogawa Test&Measurement WT5000 Precision Power Analyzer training module series. These videos go over the different types displays including numeric, wave, trend, bar, and vector.
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Yokogawa Test&Measurement WT5000 Precision Power Analyzer training module series. These videos detail available software and integration platforms for communicating with the WT5000 Precision Power Analyzer.
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Understanding motor power consumption and measuring efficiency is key to optimizing motor development and usage. This eBook discusses the basics of power measurements of motor systems, including the drive system, while also looking at mechanical measurements.
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We developed an algorithm to optimize induction motor operation and produce an average power consumption savings of at least 10%. To demonstrate our algorithm’s effectiveness, we needed a proven and verified system that would give these results credibility. The solution provided by Yokogawa Test&Measurement enabled us to monitor and refine our algorithm using real-time speed, power, and temperature readings – data that would normally be incredibly difficult to accurately obtain. Having these real-world results that demonstrate the effectiveness of our algorithm means we can be more efficient with our own customers. —Neil Singer, President, AC Kinetics
Overview:
It’s not an exaggeration to say I owe a good bit of my career success to Yokogawa Test&Measurement. By using their ScopeCorders that combine the best parts of an oscilloscope and DAQ, projects that once took weeks across multiple instruments suddenly only took a few hours with just one instrument. The impact on what I could accomplish really was quite remarkable, and my ability to accurately complete projects in record time made me look incredible. No matter how complex or convoluted the task, the ScopeCorders never fail to easily handle anything I throw at them. They’re amazing instruments and I tell others about them every chance I get. —Kenneth Shoemaker, Automotive Industry Consultant/Owner at Panama Prototypes
Overview:
When I started with my company almost 20 years ago, Yokogawa Test&Measurement instruments were already in use and the engineers had no intention of switching. In fact, we still routinely use some of the older instruments because, well, they just work! The equipment doesn't really become obsolete, and they support their instruments as long as is feasible, which ultimately saves us money. Even so, as things change in our industry Yokogawa adjusts to meet those changes. From our sales representative through technical support and more, I can count on the Yokogawa team to really listen and work with us to provide a specific solution for unique problems.
—Senior Lab Technology Engineer, EMI/EMC, Large Power Systems, Testing, Global Design of Commercial and Industrial Power, Cooling, and IT Infrastructure
Overview:
I’ve been using Yokogawa Test&Measurement instruments for power measurement and analysis for several years and they always get the job done. They provide extensive and thorough documentation for their equipment and their drivers are very handy. Features like screengrabs of test results for easier sharing and the remote interface (which minimizes the time we spend having to automate tests) have proven to be incredibly helpful. My team needs instruments that are well documented, easy to use, and reliable. Yokogawa instruments check all these boxes.
—Power Drive Systems Electrification Validation Test Development, Fortune 500 Leading Global Supplier of Sustainable Automotive Solutions
Overview:
For standby power measurement and energy certification maintenance, we rely on Yokogawa Test&Measurement instruments. Their precision, accuracy, and ease-of-use are unrivaled. When given a choice between other test and measurement equipment and Yokogawa, our technicians always go for Yokogawa first. The support team provides thoughtful insights based not just on our industry but also our company’s specific needs. My team has used Yokogawa Test&Measurement instruments for decades and will continue to do so well into the future.
—Director of Technology Laboratories, International Multi-Brand Manufacturer of Major Home Appliances
Overview:
In research published by the Electrical Engineering and Computer Sciences (EECS) Department of the University of California, Berkeley, the Yokogawa Test&Measurement WT5000 Precision Power Analyzer's high accuracy and modular architecture were used to perform calculations on efficiency, pulse width modulations, and harmonic content.
Research Paper
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In a research paper published by Digital Commons @ Cal Poly, a researcher from California Polytechnic State University uses a Yokogawa Test&Measurement Digital AC Meter to measure the current and power of household devices in stand-by mode.
Research Paper
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In the paper published on OpenUCT, a Cape Town University researcher uses a Yokogawa Test&Measurement High-Performance Power Analyzer to record instantaneous voltage and current of a three-phase, four-wire system.
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In a research paper published on IEEE Xplore, Electric Power Research Institute (EPRI) researchers use a Yokogawa Test&Measurement Advanced Digital Power Meter to consistently and accurately measure computer power supply dc output/input voltage, current, power, and power factor.
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In a research paper published on IEEE Xplore, researchers from Częstochowa University of Technology and University of Naples Federico II use a Yokogawa Test&Measurement WT310 Digital Power Analyzer to attain accurate and reliable power and energy measurements from the ccNUMA/SMP system.
Brochures
Product Overviews
Overview:
The current sensor element for the Yokogawa Test&Measurement WT5000 Precision Power Analyzer is ideal for applications requiring a current transformer for high-current measurements. The internal DC power supply simplifies preparations before measurement, requiring only a connecting cable and eliminating the external power supply.
The WT5000, an industry-leading power analyzer, features seven field-removeable elements, 10 MS/s, 1 MHz power bandwidth, 18-bit resolution, and 0.03% basic power accuracy. Yokogawa Test&Measurement continues to innovate on the platform, enabling /D7 data streaming, /G7 harmonics, and flicker analysis.
The new current sensor element replaces the traditional current inputs and includes a sensor input terminal with integrated ±15V power supply, eliminating the need for an external power supply. The isolated voltage terminals remain the same as the 5A and 30A elements.
Overview:
Test and measurement engineering work groups can have differing priorities and requirements, which often results in multiple instrumentation systems and data file formats, as well as incompatible reporting. This lack of effective communication between groups and instruments causes decreased efficiency and quality and increased spending and time to market. Unify test and measurement instrumentation, software, and data across engineering teams with a suite of solutions that caters to the different needs of engineering work groups, including accurate power data, fast sampling rates, long recordings of multiple different input types, and insights into waveform data.
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The IS8000 Integrated Software Platform software platform is an integrated solution that accelerates engineering workflow. It is a revolutionary software that tightly integrates the timing, control, and data collection from multiple instruments, creating a comprehensive measurement suite that delivers confidence, efficiency, and unity.
How-tos
- Measuring Individual Phase Power on Three Phase Systems
- Standard Delta computation function
- Available on Yokogawa WT5000 Precision Power Analyzer
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We are going live on YouTube to answer your questions about the Yokogawa Test&Measurement DL950 ScopeCorder. Join us as we discuss how to make the most of this versatile instrument based on your application needs. Whether you’ve worked with a ScopeCorder for years or curious if it is a good fit for your engineering work group, this live stream can help.
Overview:
We are going live on YouTube to answer your questions about the Yokogawa Test&Measurement WT5000 Precision Power Analyzer. Join us to discuss how to make the most of this versatile instrument based on your application needs. Whether you’ve worked with a power analyzer for years or curious if it is a good fit for your engineering work group, this live stream can help.
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Learn what signal types can be input into a scope using a Yokogawa Test&Measurement DL950 ScopeCorder, a unique combination of a 32-channel mixed signal oscilloscope and portable DAQ that captures both high-speed transient events and long-run trends.
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We went live on YouTube to answer your questions about the DLM5000HD High-Definition Oscilloscope from Yokogawa Test&Measurement and to discuss how to make the most of this incredible instrument. This live stream covers potential applications, settings and features like its high resolution, eight channels, serial bus capabilities, and portability, and last (but definitely not least) a few demonstrations.
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Learn how to log power measurement data continuously from a digital power analyzer when connecting it to a data recorder to easily and securely collect and synchronize voltage, current, harmonics, and power data for long periods of time, while also collecting thermocouple, RTD, and standard analog signal, all in one place.
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Learn when to use line filters and/or frequency filters while making power measurements with a power analyzer.
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Having multiple memory options allows engineering groups to optimize how data is stored, no matter if you need to record for a long time at slower sampling rates, do a fast capture at high sampling rates, or anything in between.
The Yokogawa Test&Measurement DL950 ScopeCorder operates as an oscilloscope and incorporates the ability to record data for long periods of time like a data acquisition recorder. There are four memory types on the DL950 ScopeCorder: internal memory, solid state drive, flash memory, and PC storage through the IS8000 Integrated Test and Measurement Software Platform. This videos talks about the advantages of each of these and how to pick the best data recording method for you.
Webinars
- How to avoid the “gotcha's” of inverter-based measurements
- Computations for field-oriented control
- The integration of CAN bus communications
- Correlations in the frequency domain
- Other advanced motor and drive topics
- Baselines for system efficiency and inverter control signal analysis at the systems level
- Critical measurements to benchmark inverter input, inverter output, and motor output
- Analysis of motor control signals like torque control variables, positional sensors, and PWM and torque measurements
- Establishing baselines for system efficiency
- Conducting inverter control signal analysis at the systems level
- Identifying critical measurements for benchmarking inverter input, inverter output, and motor output
- Analyzing motor control signals, including torque control variables, positional sensors, and pulse-width modulation (PWM), as well as torque measurements
- Multi-phase measurements
- Measurement techniques
- Measurement applications
- Real-world examples and more
Overview:
You know the basics of electrical power measurements, have set up your dyno, and made key measurements – which is great. But as your motor and drive projects progress, the complexities of system drive requirements can change frequently. Control algorithms, networked communications, and mechanical systems form a complex web of interactions that need sorting. This 60-minute webinar explains how to get past ground-level measurements and delve into comprehensive solutions that leverage test and measurement instruments including power analyzers, high-speed data acquisition, and real-time software.
Topics include:
The technical presentation includes an audience Q&A.
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Continual improvements and innovations in motor and inverter technologies are key to furthering the goal of global decarbonization in the transportation industry.
During this webinar, engineering professionals who develop motor and inverter systems will learn how to more effectively benchmark data for and troubleshoot issues with energy efficiency in EV powertrains.
Key topics include:
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With ongoing innovations in motor and inverter technologies seeking to advance global decarbonization objectives in the automotive industry, it’s crucial that engineers have a thorough understanding of how to properly analyze these systems.
This complimentary webinar provides engineering professionals involved in motor and control system development with insights that enable data benchmarking and troubleshooting issues related to energy efficiency in electric vehicle (EV) powertrains.
Key webinar topics include:
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While DC power measurements are relatively straight forward, AC power measurements that include distorted waveforms, varying power factors, and multiple phases can add complexity to an otherwise simple measurement. During this webinar, we cover multiple fundamentals of power measurement.
Key topics include:
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Why should you be concerned with your product’s power system voltage and current harmonics? From an engineering perspective, harmonics produce excessive heat in equipment that causes significant damage and results in inefficient operation. From a business perspective, compliance is an absolute requirement for entry into global markets. To minimize or eliminate these issues and establish acceptable levels of harmonics, numerous power quality standards with specifications and limits for harmonic distortion, such as IEEE 519-2014 and IEC61000-3-2, have been introduced. During this webinar, attendees will gain knowledge on the inner workings of harmonics, learn best practices for accurately measuring harmonics, learn to recognize and distinguish the critical difference between DFT and FFT, and discover important measurement tradeoffs across various test equipment.
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