Blog


06

Apr 2021

Chroma Bidirectional DC Power Supply Operation [VIDEO]

Increasing developments in renewable energies along with the rapid growth of electric vehicles are motivating the commercialization of distributed energy sources in micro grids. The same goes for the bidirectional design of power conversion devices. These devices are motivating battery applications to achieve higher efficiencies, higher voltage conversion, and higher power densities. With that said, design and test engineers are looking to replicate these characteristics...

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15

Mar 2021

[Tech Review] Why Do EV Batteries Need Ripple Current Testing?

Ripple most commonly refers to an undesirable amount of AC voltage fluctuation on the DC power supply. During vehicle charging and power conversion, EV batteries constantly have to face such troublesome power ripples. In the long run, this may accelerate battery degradation, especially in harsh low-temperature environments. EV batteries thus require ripple current testing to ensure quality. When the power is converted, it is induced...

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03

Mar 2021

Drivers para luminarias LED. Metodología y recomendaciones de prueba

En la actualidad las lámparas de LED pasaron a ser de un concepto innovador al nuevo estándar en la industria de iluminación debido a su bajo consumo de potencia, calentamiento e intensidad luminosa, lo cual ha llevado a un incremento en la demanda de producción de drivers de LED más eficientes y para mayor potencia. Chroma tiene una experiencia de más de 30 años en...

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23

Feb 2021

50% Fewer System Commands for Easier EV CAN Communication Testing

As the demand for energy-saving, safe, and intelligent vehicles increases, so does the need for integrating ever more electronic components into the vehicle. CAN (Controller Area Network) and its upgrade CAN FD (CAN with Flexible Data-Rate) are widely used communication protocols for in-vehicle network systems. These set up the main framework to communicate with the car’s electronic control unit. The operation of various electronic control...

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03

Feb 2021

Battery Simulator Accelerates Development of Mild Hybrid 48V

Fueled by increasingly stringent regulations on automotive emission and coupled with the ever-growing expansion and complexity of electrical equipment in vehicles, more and more hybrid electric vehicle (HEV) models are entering the market. From Japan to Europe, different automakers promote different hybrid technologies. Nevertheless, the 48V mild hybrid system has become the focal point for vehicle development in recent years. The main task of the...

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01

Feb 2021

What is there to know about Bidirectional DC Power Supplies?

Bidirectional DC Power Supplies operate as both power supply and regenerative DC load. This capability is increasingly important in the renewable energy and electric vehicle industries. Chroma 62000D provides programmable DC power with a high speed transient response less than 1.5ms, and can operate in constant voltage, constant current, and constant power modes. As a load, it can feed back to the grid with high...

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20

Jan 2021

Sentinel Series: IEC60601 Medical Device Automated Test Systems with IQ/OQ Test Protocol Documents

Chroma Sentinel Systems are automated test systems with software designed specifically for Medical device compliance testing of multi-functional patient monitoring equipment to IEC60601-1 and IEC60601-2-49 Standards. Sentinel Systems are also the only complete test systems with IQ/OQ test protocol documents built right in. Most systems are delivered in 4 weeks with no NRE costs. Sentinel systems are available in 3 efficient configurations with or without...

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07

Jan 2021

Chroma CCS EV Charging Test System Adopted by Major U.S. EV Manufacturer

As the automobile industry moves towards the non-gasoline era, both the global electric vehicle market and the number of charging stations are growing rapidly. This presses the need for centrally developed EV charging standards. The currently most used charging interfaces in the market include CHAdeMO in Japan, GB/T in China, and CCS in Europe and America. Especially CCS (Combined Charging System) is strongly promoted by...

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05

Jan 2021

Chroma Presents E-Scooter Fast Charging Test Ahead of Schedule to Help CHAdeMO Association

The various restrictions on the sale of gasoline-powered scooters by governments all around have promoted the rapid development of the electric scooter industry. The current popularization of charging stations will likewise boost the sales of e-scooters. Driven by market demand, the safety and standardization of electric scooters have also received much attention, and the formulation of relevant standards proved urgent. In 2018, the Taiwanese government...

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03

Sep 2020

Factors you did NOT know that cause lithium-ion batteries to ignite and explode… And the test solutions

Most explosion and fire accidents in lithium-ion battery products occur while charging, even inside electric vehicles, power tools, electronic products, you name it. This mainly happens when the negative electrode material (graphite or mixed silicon) inflates while charging, which shortens the distance between the positive and negative electrodes. If the mixing of conductive impurities causes the effective distance between the electrodes to become shorter than...

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