Mitsubishi Heavy Industries (MHI) Ltd tested a wireless power transmission technology that it has been developing as a core technology for its space solar power system (SSPS) and succeeded in a wireless power transmission over a distance of 500m (new record in Japan).
MHI made this announcement March 12, 2015. The company is developing the SSPS as a future power generation system. The long-range power transmission was tested in a ground test conducted on the property of Kobe Shipyard (Kobe City, Hyogo Prefecture).
In the test, 10kW of electric power was wirelessly transmitted from a power transmission unit by using microwaves. And part of the transmitted electricity was used to light an LED lamp installed on a power reception unit located 500m away from the transmission unit. Both the transmission range of 500m and the output of 10kW are new records in Japan, MHI said.
MHI also tested a system that controls a transmitted beam and prevents it from deviating from the direction of the reception unit and confirmed that the system does not have any problem.
The ground test was conducted as part of the "Research and Development Project for Technologies to Wirelessly Transmit and Receive Solar Electricity for Fiscal 2012," which Japan's Ministry of Economy, Trade and Industry (METI) entrusted to Japan Space Systems. MHI conducted the test based on a contract with Japan Space Systems. The company employed a wireless power transmission technology called "radio emission type."
The wireless power transmission technology is expected to be used not only in space but also on the earth (e.g. power transmission to areas where it is difficult to lay power transmission lines, transmission from a floating wind power plant to a land and wireless power transmission to a train car).
The SSPS is used by launching solar panels to a height of 36,000km in space, generating electricity on a stationary orbit, wirelessly transmitting the power to the earth by using microwaves or lasers and converting them to electricity on the ground.
Source: techon.nikkeibp.co
No comments:
Post a Comment