Cree LED Module and COB New Technology Exchange Conference Held in Zhongshan, Guangdong
Cree LED modules achieve the dual advantages of high luminous efficiency and high color rendering index. The innovative patented white LED technology - TrueWhite Â® technology, achieves excellent illumination quality and stable color consistency while achieving high luminous efficiency. The 90+ color rendering index is available in the color temperature range. Keysight LED modules are easy to use and highly integrated with drive, optics and thermal management technologies, enabling small and compact LED modules to be plug-and-play, further simplifying lighting design, reducing system cost and speeding up the launch of lighting products. At the same time, Cree LED modules have passed CQC, Energy Star, UL and other important domestic and international standards certification, which can help customers quickly bring LED lighting products to domestic and foreign markets.
Optimized to simplify design and reduce system cost, Cree offers a comprehensive range of COB products, including the latest CXA1507 / 1512 / 2520 / 2530, to meet the requirements of LED replacement lamps and commercial downlights. COB single device both high brightness, high luminous efficiency and ease of use characteristics, and can provide EasyWhite Â® color temperature sub-file, only the single device can provide excellent color consistency of lighting design. The source size of the Cree COB series meets the Zhaga standard, while increasing the area between the light source and the pad to provide more optical design space, and the larger size pad improves soldering capability. For manufacturers of lighting products looking to achieve lighting-grade LED performance while simplifying LED lighting design and manufacturing, the Cree COB Series will be the ideal choice. With the innovation and development of integrated COB technology, Cree will continue to provide customers with LED devices that combine design simplicity and ease of production with higher performance, helping lighting manufacturers to quickly introduce a wide range of LED lighting products. To meet the different requirements of lighting applications.
The participating customers showed great interest in the new products presented by Cree. They conducted extensive on-site interactive communication and technical discussions with Cree technicians, and requested samples and reference designs to improve the original lighting solutions.
Participating customers and Curry technicians to conduct on-site communication
(This article is contributed by Cree)
Brushless permanent magnet motors with low inertia rotors are used in high-performance servo applications such as machine tools or pick and place applications where fast, precise movements are required, and motors with high inertia rotors (and high pole-numbers) suit low-speed applications such as gearless lift systems.
The performance characteristics of these drives are summarized below:
They have excellent dynamic performance at speeds down to standstill when position feedback is used.
For precision positioning the position feedback must define the absolute position uniquely within an electrical revolution of the motor. This can be provided with a position sensor or alternatively a sensorless scheme can be used. The performance of a sensorless scheme will be lower than when a position sensor is used.
Field weakening of permanent magnet motors is possible to extend their speed range, but this requires additional motor current, and so the motor becomes less efficient in the field weakening range. This form of control also increases the rotor losses and raises the temperature of the magnet material, thereby increasing the risk of demagnetization. Care is also needed in such applications to avoid overvoltage at the motor and drive terminals in the event of a loss of control: at high speeds, the open-circuit voltage will exceed the rated value.
Brushless permanent magnet motors exhibit an effect called cogging that results in torque ripple. It is caused by magnetic reluctance forces acting mainly in the teeth of the stator, and can be minimized by good motor design, but can still be a problem in sensitive applications.
Brushless permanent magnet motors can be very efficient as the rotor losses are very small.
Brushless permanent magnet motor,Permanent magnet brushless dc motor
Shenzhen Maintex Intelligent Control Co., Ltd. , https://www.maintexmotor.com