High Efficiency Motor Systems

Testing Centres for Motor Efficiency

A task of the IEA 4E EMSA Project - The International Energy Agency (IEA) Implementing Agreement for a Co-operating Programme on Efficient Electrical End-Use Equipment (4E) was set up in 2008 and is currently supported by around 12 countries. A new Electric Motor Systems Annex (EMSA) was launched at the end of 2008 and is made up of a number of Tasks.

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Why use a frequency inverter along with an electric motor?

An electric motor and an electricity generator are basically the same. By principle, any electric motor can also generate electricity. Electric drives are way ahead of combustion engines, since, unfortunately, a car engine which sucks up exhaust fumes during braking and downhill rides and converts them into fuel and fresh air is still pending. The electric motor can deliver this, although during its first century of existence, its use has largely been hampered by two basic drawbacks:

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Modern Thermography for Facility Management

Is it possible to reduce the risk of electrically induced fires by 50% and reduce the cost of motor breakdown's and downtime?

This webinar will shed some light over a solution for preventive maintenance and fault identification in industrial applications as tool for cost saving/avoidance and performance improvement.

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Single Sensor Based Photovoltaic Maximum Power Point Tracking Technique for Solar Water Pumping System

The development of photovoltaic (PV) panels has made solar-powered pumps a reality. The pump drivers are usually direct-current (DC) motors, which are fed by power electronic converters with maximum power point tracking (MPPT) to extract the whole energy that the PV panels can generate, depending on environmental conditions including irradiation and temperature. The implementation of the MPPT algorithm essentially involves sensing both an input current and an input voltage. Understandably, such realisation is expensive.

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Energy Efficiency of Induction Machines: A Critical Assessment

In this work, some fundamental aspects concerning the efficiency of induction machines are treated. The standards and the therein prescribed methods for the determination of the energy efficiency of induction machines are discussed. A detailed comparison of the four most relevant and recent methods identifies the differences. By means of measurement results of different machines, the differences between and the shortcomings of certain methods is confirmed. In that context, special attention is paid to the new, so-called ‘Eh-Y’ method.

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