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Renewable Energy

 



 

 

Renewable Energy

February 2012
Optimized Design for High-Temp Operation

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Figure1: The test circuit used for all turn-off measurements Lcomm= 3.2 μH?Configuration 1: Cclamp = 10 μF, Rclamp = 0.625 ?, L? = 330 nH?Configuration 2: Cclamp = 20 μF, Rclamp = 0.37 ?, L? = 325 nH

A 4.5 kV IGCT (Integrated Gate Commutated Thyristor) with extraordinary high Safe Operating Area (SOA) at 140°C is presented. The improvements for the IGCT were achieved by optimizing the corrugated
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Date:
02/02/2012
Renewable Energy Parking

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A new solar carport transforms the parking space into a provider of green power that should delight designers and owners of electric cars alike. Fitted with innovative lightweight solar
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Date:
02/02/2012
Circuit Protection Design

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Figure 1: Typical solar power system diagram

Increasing demand for clean electrical power has led to a focus on renewable energy sources such as solar power. Solar power systems are independent power generation systems meant to power
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Date:
02/02/2012

Solar Battery Charger

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Figure 1: Typical off-grid PV system

Photovoltaic cell technology over the last few years has reached levels of cost and efficiency that enable its use in new markets. Due to the varying sunlight conditions, energy storage
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Date:
02/01/2012
Inverter Efficiency

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At least two power reactors are needed for solar inverters: one in the boost converter (step-up chopper) and one at the ouput of the inverter for EMC filtering. Besides the IGBTs, the losses in the reactors are a major determining factor of the overall efficiency of the inverter

Low-loss and high saturation flux density core materials in reactors and transformers are a key determining factor for the efficiency of inverters. The new TDK PE90 ferrite is a cutting-edge
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Date:
02/01/2012
Monitoring the Energy

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National Wind Energy Centre

NEL is a world-class provider of technical consultancy, research, testing, flow measurement and programme management services to the energy, oil & gas manufacturing industries and government. The
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Date:
02/01/2012
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