Recently, the Korea Institute of Advanced Science and Technology (KAIST) and the Korea Railway Research Institute (KRRI) have jointly improved a wireless power transmission technology to provide a stable 60 kHz, 180 kW wireless power transmission for large-scale transportation systems such as railways. According to reports, this technology is called the Wireless Electric Locomotive System (OLEV). The OLEV-loaded locomotive does not need to enter a special charging station or replace the battery. Wireless power can be received anytime, anywhere while traveling or parked. Therefore, the battery size is only one-fifth that of conventional electric locomotives. At the same time, OLEV meets the standards of the international electromagnetic field.
In 2011, a bus and a railcar loaded with OLEV prototypes were independently developed by KAIST. At that time, the system was able to deliver 20kHz and 10kW of power to two vehicles at an efficiency of 85%.
The improvements made by the two institutions at the time demonstrate that OLEV can be used in larger transportation systems. Professor Dong-Ho Cho, director of the KAIST Wireless Power Transmission Technology and Development Center, briefed reporters on improvements: "We have increased the power transmission density of the system by more than three times; reduced and reduced the size and weight of power receiving modules; Reduced the cost of major OLEV components, such as power supply and receiving systems, making it easier to commercialize."
It is reported that KAIST and KRRI will continue to improve the technology. In May this year, it will launch a railroad coal train trial, carry out urban road trials in July and conduct high-speed rail tests in September.
Dong-Ho Cho said that if the technology is eventually used extensively, some traditional railway facilities such as cables, electrodes, and pantographs will be eliminated, which will greatly reduce the cost of railway construction. At the same time, since the above equipment is not required, the space required by the railway will also be reduced, which will reduce the cost of tunnel construction. In addition, this technology will also solve the problems of high-speed rail noise and pantograph connection. (
2 In 1 Laptop
Do you know the difference of Yoga Laptop and 2 in 1 laptop? No. 1 is yoga notebook with 360 flip rotating absolutely; No.2 is laptop yoga slim is just like normal Education Laptop-connecting screen with keyboard, but 2 in 1 laptop tablet with pen is separately, you can use the monitor part as a window tablet. In one word, every intel yoga laptop have all the features and function of tablet 2 in 1 laptop except separated screen and keyboard. From the cost, windows yoga laptop is much higher than 2 in 1 type., cause usually former with more complicated craft and quality.
What other products you mainly produce? It`s education laptop, Gaming Laptop, engineering laptop, Android Tablet, Mini PC and All In One PC. You can see more than 5 different designs on each series, believe always have right one meet your special application or your clients demands. Therefore, what you need to do is just to get all the requirement details from your clients, then share the complete information with us, then we can provide the most suitable situation.
Of course, you can also call or email or send inquiry of what you need, thus can get value information much quickly.
2 In 1 Laptop,2 In 1 Laptop Sale,2 In 1 Laptop Tablet With Pen,Tablet 2 In 1 Laptop,2 In 1 Laptop Deals
Henan Shuyi Electronics Co., Ltd. , https://www.shuyioemminipc.com