Brushless motor gets most out of the sun

  Enquiry / contact me

-

Vision & Identification

Brushless motor gets most out of the sun
Brushless motor gets most out of the sun

HCPV High-Concentrate Photovoltaic, is a power dense system designed to most advantageously harvest energy. An accurate positioning system with brushless motors allows optimized optical focusing.

Manufacturing of highly efficient photovoltaic systems is marching on. A Korean development sets a new benchmark not only in respect to the efficiency of the solar cell itself, but also condenses the sunlight and multiplies the concentration. The result, HCPV High-Concentrate Photovoltaic, is an outstandingly power dense system designed to most advantageously harvest energy from a so far still sparsely used natural resource. Brushless motors with planetary gearhead are used to continuously track the actual solar position.

Usually, today used photovoltaic modules are limited to the photoelectric conversion of sunlight into electrical energy. Korean scientists now found a way to not only considerably improve the solar cells’ efficiency, but also to focus the incident sunlight and to significantly boost overall efficiency.

Three novel elements contribute to the remarkable improvement in performance: The high-resolution, real-time tracking towards the sun, highly efficient focusing of the solar radiation prior its conversion into electrical energy, and high-concentrated, extremely efficient solar cells.

Solar tracking of the panels is accomplished with 2 axis real-time control powered by brushless EC-max 30 mm motors with planetary gearhead GP 42 C with a resolution of 0.0025mm. Only this highly accurate positioning system allows optimized optical focusing. For that purpose, every individual solar cell is equipped with photo-optic condenser based on a Fresnel lens of a size of approximately 250 x 250 mm. It condenses the sunlight by a factor of 300 to 500. Eventually, below the condenser positioned high-concentration solar cells are capable to generate up to 37 watts of electric energy - this on a surface of just one square centimeter (±0.15 square inches) and an efficiency of approximately 37 up to 40%. When compared to regular cells, the improvement corresponding to an increase of about 300%.

The consistent implementation of optimized utilization of the incident solar radiation results in a system of highest power density. Thus permitting self-contained systems composed of 12 modules which require floor space of less than 20 m2 and possessing the capacity to deliver 3.2 kW/h of electrical energy.

Posted on October 20, 2009 - (536 views)
maxon motor ag
Brünigstrasse 220
6072 Sachseln - Switzerland
+41-41-6661500
+41-41-6661650
View full company profile
Description

maxon motor is the world's leading supplier of high-precision drive systems. More than 40 years' experience, constant innovation, top-quality products and competent customer service make maxon motor a reliable partner in the drive technology sector.

Location
More products from this supplier
Power at the Press of a Button
Power Density in Robotics
Sensorless Control of Brushless Motors
Biorobotics Laboratories
Stepping it up a Notch
Motion Controller with EtherCAT
Brushless Flat Motors
The Invisible Door Opener
Positioning Controllers with Connector Board
High-speed Drives Online Configurator
First Sterializable Drive System
Motors that are out of this world
Maxon ECX: A BLDC Motor in the Fast Line
Spindle Drives
DC Motors in Ship Building
Brushless Motor
DC drives
Gearhead, Motor & Encoder
Custom DC Drives
High-precision drives and systems, product range
Related articles
Heat-resistant Specialist Optical Systems
Optical Gas Imaging for Oil & Gas Pipelines
Using the Amplitude Fidelity Reading for Total Focusing Method (TFM) Grid Resolution Definition in the OmniScan® X3 Flaw Detector
Reduction of Time to Market through Transport Layer IP Cores
21st century fingerprint detection
Compact Cameras for Thermal Imaging
Waterproofed lens adapter helps BBC record wildlife
Deep Sea observation
Designed for purpose military lenses
The Challenge of Using Optical Systems in Space
Thyristor Power Controllers
Highly-scalable Paperless Recorder
VisuNet HMI Systems
Microscope Optics for IR cameras
Faster Than a Speeding Bullet
Vision and Measuring Machines in Different Sizes
Faster Than a Speeding Bullet
High Precision Laser Scanner
New Contact Image Sensor
NG Series RFID Safety Switches