Efficient, environmentally friendly and inexpensive ac / ac - power supply unit with an increased output frequency for applications in electrical surfaces heating systems

摘要

The present invention originates from the field of electrical engineering.Previously known embodiments in the region of the electrical surfaces heating systems with film or heating coating use as a power supply units simple transformers. These have a high weight and more difficult the use for applications in which the fastening is problematic and in which vibrations of heavy and inertial mass the fastening points stressing.The object was thus the development of a new power supply unit for electrical surfaces heating systems, which has a low weight and cost effective, efficient and environmentally friendly.3 if such an ac / ac - power supply unit with a sinusoidal output voltage in the increased frequency range.The developed power supply unit consists of an ac / dc - converter with power factor correction (pfc), a dc / ac - transducer, a transformer, and an optional communication module. It is distinguished by a sine output voltage in the increased frequency range, as a result of which is connected to a multiple of lighter transformer can be installed and thus also the fields of application are greater.