Tehoelektroniikkajärjestelmiä

Tehoelektroniikka, or power electronics in English, is a field of electrical engineering that deals with the conversion and control of electrical power. It involves the application of solid-state electronics to control and convert electric power efficiently. Key components in tehoelektroniikka include power semiconductor devices such as diodes, transistors (like MOSFETs and IGBTs), and thyristors. These devices act as electronic switches, enabling the manipulation of voltage and current.

The primary function of tehoelektroniikka systems is to transform electrical energy from one form to another. Common conversions include alternating current (AC) to direct current (DC) (rectification), DC to AC (inversion), DC to DC (chopping), and AC to AC (frequency conversion or AC voltage control). These conversions are essential in a vast array of applications.

Examples of tehoelektroniikka in use are found in power supplies for electronic devices, electric vehicle powertrains, renewable energy systems like solar and wind power converters, motor drives for industrial machinery and appliances, and high-voltage direct current (HVDC) transmission systems. The efficiency and controllability offered by power electronics are crucial for reducing energy loss, improving system performance, and enabling advanced functionalities. Research in this area focuses on developing more efficient, smaller, and cost-effective power electronic converters and components, often utilizing new materials and advanced control strategies.