Power electronics, a challenge for electromagnetic compatibility (EMC)
Today’s buildings like offices, hotels, warehouses, and hospitals use a multitude of pumps and fans to control the heat, cool the air, and pump fresh water. Advanced control features and high reliability of electronic systems are necessary for an energy efficient building. Variable speed drives with high efficiency motors provide an energy saving potential of 40%. That is why the demand for power electronic devices like AC motor drives increases for application in residential buildings as well as in office buildings, hotels, and warehouses. HVAC products must fulfill minimum requirements in order to comply with the European regulations regarding the CE mark. All electronic equipment must work together on the same power supply without any disturbance from line voltage interferences, therefore certain product standards must be considered with regard to the electromagnetic compatibility (EMC).
The electric equipment connected to public power networks must also comply with the standards for harmonic limits to prevent the additional losses caused by harmonics in power distribution systems.
Efficiency and reliability with Schaffner solutions
Schaffner, with its EMC and Power Quality components, supports solutions for efficient and reliable use of advanced HVAC equipment. Schaffner has more than 45 years experience in tackling interference and compliance problems associated with many different power electronic devices used in air conditioners and in fan and pump applications, particularly in the use of electronics for speed control and AC motor drives.