High Voltage Grid Simulator Adds PV Inverter’s HVRT Test Function

As photovoltaic industry policies continue its growing support for distributed solar power systems, commercial power generation equipment demands for 20kVA-100kVA inverters increase as well. With the development of grid-connected high-voltage 600Vac-800Vac (VLL) systems to reduce cost and increase power generation efficiency, an important challenge to manufacturers is the inverter’s stability in high-voltage grid connections. The newest high-voltage 1385Vac (VLL)/120kVA regenerative grid simulator released by Chroma meets the specifications for inverter quality verification and grid performance tests, such as LVRT, HVRT, harmonics, waveform distortion, 3-phase unbalance, voltage dips, short interruptions, and voltage change immunity tests.

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The latest UL1741 SA specification for inverter design must be able to run under HVRT test without off-line operation. In addition, it must have the capability to continuously adjust the power and infuse reactive current into the power system during high voltage ride through. So, when the inverter is designed for a normal rated voltage of 690Vac (VLL), it must be tested for rated grid voltage (over 897VLL) which is raised 1.3, 1.2, or 1.1 times respectively as it has to run uninterruptedly at dozens of test points during voltage rise and recovery. Moreover, it has to respond normally and issue a proportioned capacitive reactive current according to the standard during HVRT, which can effectively stabilized the grid voltage and ensure the demand for the quality of electricity.

Chroma’s high-voltage power grid simulator can output voltage up to 1385VLL (800VLN) without using a step up transformer. Besides up to 1.5V/us output voltage transient capability, it has flexible, cost-effective and space-saving features. For example, when testing an inverter below 50kVA, it can be used as two 60kVA power grid simulators; and if high power and high voltage 60-100kVA inverters are required for testing, two 60kVA power grid simulators can be connected in series for up to 1385VLL (800VLN).

For more information about Chroma 61800 features and specifications, please visit Chroma’s website: Chroma 61800 Series Regenerative Grid Simulator

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Chroma Collaborates with the National Taiwan University of Science and Technology to Help Improve Al and Green Industry Technologies

On March 26th, 2018, Chroma ATE Inc. collaborated with the National Taiwan University of Science and Technology (NTUST) to hold a signing ceremony in efforts to engage the electronics industry to actively participate in an international industrial-academic alliance. The organizations seek to advance the research and development of innovated technologies associated with sustainable energy, AI artificial intelligence, smart manufacturing, etc.

Since 2015, Chroma has invested over 15 million NT dollars along with other various instrumental equipment (valued at 4.2 million NT dollars) to the Chroma NTUST R&D Center in efforts to help cultivate the academic aptitudes of NTUST students.

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Benjamin Huang (left), Deputy GM of Chroma, and Ching-Jong Liao (right), president of NTUST, in the signing ceremony of the cooperation agreement. (Photo provided by NTUST)

Ching-Jong Liao, President of the NTUST, stated that the university is capable of customizing multiple solutions to different business demands by providing the research and development necessary to the AI and green industries. Liao plans on further expanding industrial-academic relationships to the global level by broadening the markets of domestic manufacturers internationally and linking R&D energy with transnational scientific research institutions and industries.

For many years, the NTUST has been actively collaborating with Germany, United States, and Japan in the industrial-academic movements. In addition, the university holds a great deal of alumni resources spanning internationally from countries including the United States, Indonesia, Vietnam, and Ethiopia who are assets in promoting industrial-academic cooperation.

As a world-leading supplier of precision Test and Measurement Instrumentation, Automated Test Systems, Smart Manufacturing System, and SmartAuto Total Turnkey Solutions, Chroma invests a significant amount of resources into R&D. This substantial investment of resources ensures that Chroma remains competitive on the forefront of leading technologies and integration capabilities in the optics, mechanics, electronics, thermal control, and software industries. And with the help of the NTUST, Chroma is able to quickly grow as an organization that continues to develop and harness advanced technologies.

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New Regenerative AC Load Function – Further Extend the Grid Simulator Capability for Micro-grid Test Application

The Chroma 61800 Series high power regenerative grid simulator capable of delivering output power up to 300kVA has been widely used for testing PV inverters, power conditioning systems (PCS) and EVSE charging stations. Lately, more and more engineers are studying the applications of micro-grids and energy storage systems. The 61800 Series not only can simulate the voltage and frequency test requirements for different regions of world, it is also capable of simulating voltage transient and abnormal conditions with synthesis of harmonic / inter-harmonic components as well. Its full four quadrants operation capability and regenerative function used to feed the energy back to the grid are the most favored by users.

Aside from the aforementioned capabilities to simulate the AC voltage test conditions, the capabilities of simulating various load conditions in order to cope with the diversified and dynamic nature of the system are also required for the micro-grid testing. It is very rare in the market to have test equipment with both AC source and AC load functions as a single unit.

Traditional AC electronic load designs mainly consist of passive and switch devices. These electronics loads can only operate in the 1st quadrant (both voltage/current in the positive region) and 3rd quadrant (both voltage/current in the negative region). The functionalities for the traditional AC electronic load are mainly limited to CR mode and rectified mode due to the design’s nature. Unlike the traditional electronics load, Chroma 61800 Series with full four quadrants and a regenerative design has further extended its test application capabilities by including the regenerative AC load function as an option with its maximum loading capability equivalent to the maximum output power rating of the unit. For instance, with the AC load option installed, the 61800 Series is capable of providing up to 180kW loading capability.

The phase lead/lag mode with phase angle setting ranging from 90 degree ~ -90 degree will simulate the corresponding voltage and current condition under an inductive or capacitive type load (see below waveforms). When the phase angle setting is in the range of 90.1 degree ~ 180 degree (-90 degree ~ -180 degree), the 61800 will become a current source, similar to a programmable inverter which is applicable for micro-grid related testing.

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The Chroma 61800 Series regenerative AC load function is applicable for AC power supplies, UPS, PCS and EVSE charging station (V2L/V2H) test applications. It can simulate the effects of different loading conditions based on various home appliances, or test the PV inverter’s power quality correction functionality by deliberately setting the AC load in various reactive load conditions. The regenerative AC load is applicable for simulating the various power flow conditions related to micro-grid application for research in smart management or for balancing supply and demand loads.

Chroma uses the DSP digital control method to add the optional AC load function to the 61800 Series regenerative grid simulator. The AC load function further diversified the 61800 Series test applications ranging from academic, R&D design verification, and quality assurance to mass production.

For more information on the Chroma 61800 features and specifications, please visit Chroma’s website:   Regenerative Grid Simulator Model 61800 Series

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The AERO Team at Beihang University: The Movement Towards the Unmanned Electric Vehicle

By Chroma Electronics

During the 8th anniversary of the Formula Student China (FSC) organization, Beihang University’s AERO team celebrated a decisive victory using their premiered retrofitted electric car at the first annual Formula Student Autonomous China (FSAC) competition. In recent years, the direction of electric vehicles has been trending towards a new technological state of autonomy, or “self-driving.” Beihang University is one of the few top universities in the FSAC to participate in, not only both traditional fossil-fuel and electric vehicle competitions, but now also the “unmanned” vehicle movement. Thus, the team required a higher level of technology to back up its demands; the hardware and software needed to be functionally integrated with high complexity to ensure stable operation of electronic product. Chroma Electronics provided the university’s AERO team with professional testing equipment and experiences to assist in achieving its electronic vehicle development plans and to improve the overall unmanned vehicle campaign.

The development of electric vehicles is one of China’s most important growth strategies, driving both the battery and energy storage industries.
Chroma’s automatic test systems (ATS) offer a wide range of AC/DC power supplies, electronic loads, and electrical safety tools to test EV/HEV related parts and equipment. Chroma’s multifunctional ATS can also be applied to power electronic devices like EVSEs, car chargers, DC/DC converters, motor drivers, etc. In addition, the system validates the high-voltage parts, checking the charging circuit and the potential equalization of the automotive body for electric cars. A powerful software testing tool is provided to help integrate the DC power supplies and electronic loads in order to perform necessary tests on the battery storage system.

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Furthermore, the Formula SAE Electric Racecar competition, hosted by SAE International, nurtures future talents in China’s new energy automotive industry. Chroma Electronics has been a part of China’s new energy industry for years while supporting the social responsibility of shouldering numerous formula student electric team endeavors. Chroma’s multiple test solutions have received recognition from China’s energy industry and academia as well by helping customers identify the potential risks during the design verification process. Chroma’s solutions correct these product problems in order to accelerate the R&D process and to propel new business opportunities.

For more information about our Electric Vehicle Test Solution, please visit Chroma’s company website.

About Beihang AERO Formula Racing Team

Founded in 2009, the Beihang AERO Formula Racing Team is a domestic, first-class, aerospace engineering team that participated in the first China University Formula Auto Racing Competition, and since then, has continued to gain even more years of expedition experience. In 2017, the team took first place in the endurance race of the electric vehicle group taking the grand prize in YiChe.

About Chroma Electronics

Chroma Electronics is a subsidiary of Chroma group which is a listed company in Taiwan with products marketed globally under the brand name “Chroma.” With more than 30 years of experience in precision instrumentation, Chroma has been actively developing new energy test solutions for solar energy, electric vehicles, and microgrids energy storage industries. These solutions are in use worldwide by automotive manufacturers and renowned laboratories.

 

Introducing the newest Chroma ATE Solutions APP. Download and experience it now.


Android Download iOS Download Chroma ATE Inc.

Chroma ATE Inc. is introducing its new digital service to provide you information for test and automation turkey solutions via the app. Significant markets Chroma serves include electric vehicle, LED, photovoltaic, green battery, semiconductor, photonics, flat panel display, video and color, power electronics, passive component, electrical safety, thermoelectric, automated optical inspection, and intelligent manufacturing system for smart factory.

This app covers 14 test solutions and over 500 product models in 3 languages. Synchronizing to the on-line inquiry system, you can get help from Chroma sales offices at your fingertips. The global service map provides you with GPS navigation, phone call, e-mail contact, and website browsing functions. Find the service points near you anytime, anywhere. Click or Scanning QRcode to get the free Chroma ATE Solutions APP now!

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Chroma Launches Its New 63000 Series DC Electronic Loads to Satisfy the Tests for Small Power Supplies and Batteries

Chroma 63000

To meet the testing requirements of small power supplies, Chroma has launched a brand new 63000 Series of benchtop DC electronic loads specifically designed for testing lower power adaptors, cell phone chargers, small batteries (such as cell phone batteries), D/D converters, USB PD, and so on. Different from the modular electronic load, they can be used without a mainframe. With the advantages of its compact size, lighter weight, low cost, and portability, the 63000 Series is the perfect electronic load for R&D labs and colleges.

 Chroma 63000

The voltage and current specifications of each model in the 63000 Series are comprised of three settings and three measurement ranges. For adapters and USB PD’s that require higher testing accuracy, small current test like 0.1A is often performed during efficiency testing. However, misjudgment frequently occurs due to insufficient range or low accuracy. The minimum setting and measurement current range of the 63004-150-60 is 2A and the current error is less than 2mA which makes it suitable for these tests and validating the regulatory compliance of Energy Star. The maximum current output of a single load is up to 60A, with power up to 350W. Besides, the large scaled fonts and moderate shortcuts in its 3.5” LCD display bring great usability in the forms of sight and touch.

Chroma 63000 LCD screen

In addition to the basic CC, CR, CP, CV, and CRD modes, the 63000 Series also has battery discharge, User Defined Waveforms (UDW), and programming functions to satisfy the test requirements for D/D converters, 3C battery dischargers, and switching power supplies.

The battery discharge mode is applicable for 3C battery discharge test and can record the Wh (Watt) and Ah (Ah) during battery discharge. The User Defined Waveform (Figure 1) can simulate the real load current allowing the R&D test engineer to verify the power in the actual load current. The quality assurance department can reproduce the actual load current situation to reduce the development and validation time. For other DC power and component applications such as fuel cells, fuses, switches, and wiring tests, the pulse current (Figure 2) function is provided to test them by setting the repeat time to 1 in the existing dynamic loading mode.

 

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   Figure 1 User Defined Waveform Figure 2 Pulse Current

With over 30 years’ experience manufacturing test and measurement instrumentation, Chroma continues to create innovative power electronics testing solutions and provides the industry with highly reliable and high performance testing instruments.

For more information about our DC Electronic Loads – 63000 Series, please visit our company website: DC Electronic Load Model 63000 Series

If you would like a product demonstration, email your requirements and preferred method of contact to info@chromaate.com. Chroma is here to serve you. 

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Grand Opening of Chroma Building – a Student’s Dormitory Donated to National Chiao Tung University Tainan Campus

Chroma ATE Inc. is a world leading supplier of precision Test and Measurement Instrumentation, Automated Test Systems, Intelligent Manufacturing Systems and Turnkey Test and Automation Solutions. Through their interest in supporting both academia and industry, Chroma assisted the College of Photonics at Tainan campus of Chiao Tung University in the building of a new dormitory and housing center and held the opening ceremony on Dec. 25, 2017.

Figure: Grand Opening of Chroma Building – a Student’s Dormitory Donated to NCTU Tainan Campus, Left – Chroma ATE Inc. CEO Leo Huang, Right – NCTU Principal Frank Chang.

Frank Chang, the principal of NCTU, Tainan acting mayor Li Meng Yung, Chroma CEO Leo Huang, Acer Group founder Stan Shih, Himax Technologies founder Biing-Seng Wu, Catcher Technology CEO Allen Hong, Wistron CEO Simon Lin, and Hermes-Epitek GM Hsu Chin-jung unveiled the monument to the completed building for the official opening. The dormitories were built through the collaboration of industry-academic with construction fees donated by alumni and enterprises. The dormitories are named as Chroma House, Himax House, Catcher House, Wistron House, and Hermes-Epitek House to be the spiritual and cultural namesakes for the future.

Besides providing students with comfortable accommodation space, the National Chiao Tung University will allocate a certain percentage of student accommodation fees annually to the research cooperation fund in support of the industry-academic collaboration.

Chroma has been actively participating in the industry-academic collaboration and research projects by means of combining academic research and Chroma’s industrial advantages to nurture talent. Chroma also provides undergraduate scholarships and internship opportunities to students allowing the younger generation to get in touch with the corporate culture and understand the industry trends early.

Chroma Test Equipment Designated by IFEC 2017 for Power Supply Competition

<Note: This article was released on September 6>
The IFEC, initiated by IEEE, is an international student competition for innovation, conservation, and effective use of electrical energy, which is open to college and university student teams from recognized engineering programs in any location.

Chroma, the world’s leading manufacturer of test instrumentation, has been the only official designated equipment sponsor for three consecutive years and recently participated in the competition held at the Virginia Polytechnic Institute in the United States. A Chroma 8000 Automated Test System (ATS) was customized to perform the test items for the competition where students were to create high efficiency, high density isolated DC-DC converters. The data measured by the Chroma 8000 ATS was used as the evaluation criteria and the test items are summarized as below:

Test Items Measurements
Steady State Test Output boltage, ripple voltage, efficiency
Load Transient Response Test Output voltage waveform, positive/negative overshoot voltage
Burn-in Test Output voltage, ripple voltage, efficiency

To cope with the competition requirements for high accuracy and high current slew, the 8000 ATS was equipped Chroma’s 63600 Series high precision electronic load with a sampling rate of up to 500k Hz and a 2A/µs current slew rate. Combined with the open software architecture of the Chroma 8000 ATS, a complete test report was generated to give the judges an important reference to rate the competition entries.

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▲Chroma 8000 ATS Used by IFEC 2017

With more than 30 years of experience in precision instrumentation, Chroma is a leader of automated test systems specialized in a variety of power electronics testing. To adapt to new energy development, Chroma has been actively developing test solutions for solar energy, electric vehicles, and battery packs industries to satisfy their customer’s demands.

Chroma was proud of contributing the industry experience in this international energy design competition and will continue to sponsor the 2018 IFEC helping to nurture the future elite in the field of electronics. The IFEC 2017 competition results will be announced on the IFEC official website soon. For detailed information, please refer to the URL below:

IFEC Official Website: http://energychallenge.weebly.com/

 

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Advanced Test Solution for New Energy Parts – Chroma Multi-Channel Battery Simulator

Chroma ATE Inc. was invited to attend the IFEEC 2017 (International Future Energy Electronics Conference) held in Kaohsiung to introduce the new product for battery simulation. The battery simulator can perform simulations on the units that are critical to the booming EV industry such as DC charging pole, on-board charger, and DC/DC Converter, etc. for product verification.


Battery Simulator Soft-panel

As more and more energy conversion products such as motor driver, OBC, DC/DC convertor, and power conversion system (PCS), etc. use battery as the power source, a battery simulator is required for product quality verification. Battery suppliers may not be able to supply batteries of various kinds such as flow battery, sodium sulfur storage battery, and lithium-ion battery with different charge/discharge characteristic curves during product development.

The battery characteristic is nonlinear which is easily affected by temperature, charge/discharge current, aging cendition, and efficiency ,cannot replicate the same characteristic for repeat testing. As time is required to charge or discharge a battery, it makes instant output voltage change impossible for the real battery, which is quite inconvenient when testing the power converter’s upper and lower limits. Most importantly, the large capacity battery is big in size and will age after long-term use. It costs a lot for replacement, plus if the battery is damaged, overcharged or over discharged. It could easily cause safety hazards. In the lab, it is not recommended to set up large capacity batteries, but rather to use a battery simulator for testing.

What functions are required for a battery simulator?

  1. Battery internal resistance setting: The main task of a battery pack is to provide energy to the developed products. When the charged/discharged current is added to the battery pack, the voltage of the battery pack changes instantaneously in a short time due to the impact of the battery internal resistance.
  2. Battery capacity setting: The DC input voltage operating range should be clearly specified in the developed product specification, which is related to the battery pack capacity and output voltage.
  3. Battery voltage point setting: The usage of the battery pack varies with products, and the frequently seen battery management items are 6 voltage level including overcharge voltage, over discharge voltage, upper limit operating voltage, lower limit operating voltage, full charge voltage, and full discharge voltage.

Chroma’s multi-channel battery simulator is easy to use. The multiple embedded channels can test different DUTs at the same time, and read the test results in real time. The rapid setup of common battery parameter can simulate the charge/discharge voltage and IR state of a battery cell under normal, high and low temperatures. The battery cell parameters can convert battery pack state to set the operating and protection range. Moreover, it can set the initial state of output voltage for product testing and verification without waiting for the charge and discharge time like the real battery pack.


Battery Simulator Main Panel

For more information please visit our website http://www.chromaate.com/product/list/battery_pack_test_solution.htm

If you would like immediate assistance, email your requirements and preferred method of contact to Chroma ATE. Chroma is here to serve you.

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Battery Test Solution

Chroma ATE Invested Innovative Nanotech Inc. with Technology Transfer from ITRI to Advancing in Semiconductor Front-end Process Inspection

TAOYUAN, Taiwan, Nov. 24, 2017 — Innovative Nanotech Inc., invested by Chroma ATE Inc., signed a contract with Industrial Technology Research Institute (ITRI) on Nov. 24 for “Nanoparticles Monitoring Technology” transfer. In addition, ITRI will serve as an important shareholder of Innovative Nanotech. Just a short time ago Innovative Nanotech had been contracted with Hsinchu Science Park for the purpose of developing and creating liquid nanoparticle monitoring systems used in the semiconductor manufacturing process to help improve the yield rate.

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Figure:Chroma ATE Inc. CEO Leo Huang (right) signed a contract with Industrial Technology Research Institute (ITRI) on Nov. 24 for “Nanoparticles Monitoring Technology” transfer to Chroma’s new startup company, Innovative Nanotech Inc.

Large amount of liquid solutions are often used to clean, grind and etch the wafer surface during the semiconductor manufacturing process and impurities in the solution have an impact on the defect rate. Light scattering particle measurement technology currently cannot precisely detect the size and quantity of solution particles under 20nm, which makes it difficult in controlling the manufacturing process. Also, with development from 20nm to 10nm and even to 7nm, the minimized transistors make the width of current path narrow; therefore, when impurities like nanoparticles appear in solution, it will affect the defect-free rate of the product.

Innovative Nanotech will introduce to semiconductor manufacturers a new generation nanoparticle monitoring system, SuperSizer, which will accurately detect the size and quantity of particles above 5nm. This will allow manufacturers to take necessary measures to improve the process according to the monitored results. In addition to the semiconductor manufacturing process, this technology can also be applied to electronics, optoelectronics, and biomedical materials fields.

Innovative Nanotech will expand to a global market by incorporating the sales and marketing channels of Chroma group. Chroma ATE Inc. is a world leading supplier of Automated Test Systems, Intelligent Manufacturing Systems, Turnkey Test and Automation Solutions and has a number of back-end precision measurement product lines in the semiconductor testing field. Innovative Nanotech will become Chroma’s semiconductor front-end process testing solutions provider to satisfy the testing requirements of a complete semiconductor manufacturing process.

Chroma ATE Inc.