Chroma Battery Simulator – Leading Future Energy Development

Bidirectional DC-DC Converter Designated by IFEC as the Only Official Verification Tool

The IFEC 2018 (International Future Energy Challenge) sponsored by IEEE was held in Tsinghua University, Beijing. Ten teams from all over the world competed in the IFEC. The contest placed the top international students in power electronics and in the new energy generation field to compete. Chroma is the only officially designated test equipment provider for the IFEC and other sponsored competitions. For this year’s topic of “High-Efficiency and High Power Density Isolated Bidirectional DC-DC Converter for Residential Energy Storage Systems”, Chroma has tailored an automatic test system under the competition specifications.

The competitors must complete full charge and discharge efficiency tests, charge and discharge voltage ripples, overcurrent protections, and overcharge/undercharge test conditions. The Chroma 17020 Battery Simulator with built-in bidirectional DC power mode, independent multichannel design, high precision output and measurement specifications, DC input and output current switch without interruption, is suitable for testing the bidirectional DC-DC converters for incoming/outgoing shipment inspection and design verification, etc. Chroma, with innovative technical strength and expanding R&D resources to satisfy various front-end applications, was well prepared for the competition and earned high recognition from the committee.

During the IFEC 2018 finals, an international symposium “Future Power Electronics Technology” was also held for the first time to provide members a high-end communication platform. The speakers were formed by many renowned committee reviewers and IEEE associates. Being a leading company in the field of new energy solutions, Chroma shared in the R&D and testing of DC/DC converter test systems. This connected the industry development trends through practical and theoretical interactions and demonstrated Chroma’s long-term support and contributions in academia for fostering advanced talents.

About Chroma Model 17020 Battery Simulator

About IFEC IFEC is an international student competition sponsored by the Institute of Electrical and Electronics Engineers (IEEE) 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. It sets challenging topics to stimulate innovative thinking and aims to cultivate future elites in power electronics field. http://energychallenge.weebly.com/ifec-2018.html

New Generation of AC/DC Programmable Power Source for Server Power Supply Testing

The server market is steadily growing due to strong demands from cloud service providers and the expansion of next generation IT related infrastructures.

Mission critical server power supplies require testing and verification against stringent regulatory test standards to ensure operational efficiency of the server system. For instance, the immunity test standard includes voltage dips, short interruptions, and variations for both AC and DC as input requirements. Another functionality test includes simulating the transfer of input power from the main to backup system via UPS or HVDC system during abnormal power conditions (figure 1) to ensure dropout timing requirements are met.

61509
▲Figure1: Transfer of power during power loss condition

Chroma model 61509 (figure 2) is a high power density (5U height), 6kVA single- and three-phase output programmable AC Source capable of meeting rigorous test standards. With a maximum output voltage of 350Vac/495Vdc, the 61509 meets both AC and DC input voltage test requirements for server power supplies.

61509

▲Figure2: Chroma model 61509

Furthermore, the DC output power rating of the 61509 has been increased to 75% of the full rated output power and the control loop for individual coupling mode (AC, DC, AC+DC) has also been optimized to further extend test capabilities for AC/DC server power supplies. The 61509 is capable of delivering output frequency up to 2000Hz and possesses the ability to generate pure sine waveform output with typical distortion of less than 0.3% at 50/60Hz. These features make the 61509 ideal for commercial, power electronics, avionics, military, and regulation test applications from bench-top R/D design verification and quality assurance to mass production.

For more information on the Chroma 61509 features and specifications, please visit Chroma’s website: Programmable AC Power Source Model 61509/61508/61507 

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.

mf00001048-01-en

61800_ac_load_4_tc

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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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.

61800_ac_load_3_en.jpg

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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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!

Barcode-IOS-128x170.jpg Barcode-Android-128x170.jpg barcode-中國安卓版

 

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.

 

Chroma 63000 wave
   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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A Productive Utility for New Energy Vehicle LV123 Standards Tests Chroma High Voltage DC Power Supply Test Software

Complying with global energy conservation trends and policies driven by international governments, many automakers have released technical development standards for next generation vehicles, which define various electric vehicle tests for hybrid, plug-in hybrid and fuel cell vehicles. Chroma has integrated these regulatory requirements aiming to provide users with specialized and convenient test programs making Chroma a productive partner for testing new energy vehicles.

The test requirements of LV123 are defined by major European carmakers to test the electrical characteristics and safety of high-voltage components in road vehicles, such as HV battery system, inverter, electrical air conditioning compressor, electrical transmission oil pump, DC/DC converter HV/LV and On-board charger, etc. This standard defines the state and operating capability of each voltage range.

The LV123 standard regulates different states for voltage range from 0V to 800V, as shown in the table below, and demands rapid voltage slew rate change. Chroma’s 62150H-1000 DC power supply supports 0-1000V voltage output with up to 40V/ms slew rate control and can meet the LV123 basic electrical characteristics requirements through the test items listed below providing the best solution for testing new energy vehicles.

HV voltage ranges Unit HV_1 HV_2a HV_2b HV_3
Overvoltage at load dump V pk 220 410 500 800
Upper HV circuit limit voltage V pk 220 410 500 800
Maximum operating voltage V d.c. 200 360 470 770
Upper limited operating capability >V d.c. > 190 – 220 > 340 – 460 > 450 – 470 > 750 – 770
Unlimited operating capability V d.c. 90 – 190 170 – 340 250 – 450 520 – 750
Lower limited operating capability V d.c. 80 -< 90 160 -< 170 200 -< 250 450 -< 520
Highly limited operating capability V d.c. 60 -< 80 120 -< 160 200 -< 250
Undervoltage V d.c. 0 -< 60 0 -< 120 0 -< 150 0 -< 450

The following test items are provided according to the LV123 standard.

  1. Range of unlimited operating capability
  2. Range of upper limited operating capability
  3. Range of lower limited operating capability
  4. Range of highly limited operating capability

Chroma integrated the voltage range operating capability of LV123 into the 62000H Series DC power supplies and developed graphical test software based on the regulatory criteria so that the user can perform tests on the UUT with only one key. This not only saves time in the development schedule but also facilitates testing automotive electronics for their long-term performance and stability.

Range of unlimited operating capability
Range of unlimited operating capability

Range of upper limited operating capability
Range of upper limited operating capability

Range of lower limited operating capability
Range of lower limited operating capability

Range of highly limited operating capability
Range of highly limited operating capability

To learn more about the computer graphical user interface:

<Introduction to Softpanel for Model 62000P&H Series>
<Programmable DC Power Supply Model 62000H Series>

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The Newest Electrical Mains and Power Line Interference Simulation Testing Software for Download

In recent years, renewable energy has received lots of attention in particular the huge growth of solar energy and wind power. More and more power systems incorporating into the grid could have a significant impact on the current power system. Thus, many standards were set up for integrating renewable energy into the grid such as UL 1741, IEEE 1547, IEEE 1547.1, and NBT 32004, etc.

Moreover, the Low Voltage Ride-Through (LVRT) feature put forward by various countries stipulates that the grid-connected device such as a solar inverter or wind power generator will continue to supply power, when the grid voltage falls, for a period of time until the grid power returns to normal.

To address these requirements, Chroma has released testing software that can simulate the abnormality/distortion of the electrical mains and power line interference. This graphical human-machine interface software controls Chroma’s regenerative grid simulator, the 61800 Series, which is equipped with four quadrant capabilities to satisfy test demands.

In the example below, the power dropped to 0V for 150ms and resumed 70% of output for 550ms, and then spent 800ms to rise from 70% to 90% output capacity. All these conditions can be easily simulated using the software LIST mode. In addition, a preview of the waveform can be seen on the software.

61800 Softpanel

Chroma’s AC Source Software has functions for , LIST mode, STEP mode, PULSE mode, and User-Defined Waveforms (to simulate distorted or interfered mains power). Also, the inter-harmonic test function can simulate the abnormality of the main electrical power.

Screenshots for the software are shown below:

61800 Softpanel

For more information about our testing software, please visit our website:
http://www.chromaate.com/product/61800_regenerative_grid_simulator_software.htm

If you would like to download a demo version to experience the software, please email your preferred method of contact to http://www.chromaate.com/Survey?n=90a3e829-3ad1-4068-a961-2013cc402ea3. Chroma is here to serve you.

Chroma ATE Inc.

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.

IFEC2017-Chroma ATS 8000
▲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/

 

Chroma 8000 ATS

Best Choice for 48V Automotive Power System Testing Brand New 100V DC Power Supply with Auto-Ranging Output 10kW~150kW

As the trend for global energy conservation and carbon emission reduction leads the evolution of new energy vehicle electrical systems, the world’s major car manufacturers have proposed 48V power system and LV148 regulatory standards for testing new vehicles. Comparing to the previous 12V power system, 48V power system has higher conversion efficiency and increased stable start-stop performance. In addition, the server power supply structure is also moving from conventional 12V to 48V in order to optimize the overall system power conversion efficiency.

(Fig.) Wide operating region with constant power

Chroma launches a new 100V DC power supply, Model 62150H-100P, with auto-ranging output feature to support 40V/50V/60V/…/100V voltage ranges and output up to 15kW full power. It is suitable for testing products with different specifications such as the 48V new energy vehicles from 0V to 60V and the 48V architecture for server power and telecom power. The DC power supply is able to output the power from 10kW up to 150kW when setup in parallel under master/slave structure. It has active current sharing and fast transient response functions with active PFC to put low energy consumption and high conversion efficiency into effect to save energy.

High Accuracy and High Stability
The voltage control accuracy on the front panel and through the communication interface is up to 0.05% allowing users to set the required output. The stability of constant voltage and current is 0.005% for 8 hours operating. The temperature coefficient of drift is 0.005%/°C that provides an accurate and stable power source steadily even after long hours of operation.

Voltage/Current Slew Rate Control
The DC power supply’s voltage slew rate control is from 0.001V/ms to 5V/ms and can integrate with an automatic programming mode to meet the diversified needs of specific applications such as automotive electronic systems. Chroma incorporates the ISO 16750-2, VW 80000 and GS 95024-2 international automotive electronics standards into the GUI, Softpanel, to help users speed up the development and testing task.


(Fig.) ISO 16750-2 Starting Profile

62150H-100P Programmable DC Power Supply for
Large Power Application

Find More Informaiton:
DC Power Supply Model 62000H Series

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