Provolt

Rua Dr. Pedro Zimmermann, 344 Salto do Norte - Blumenau/SC

provolt@provolt.com.br

+55 47 3036-9666

The Evolution of Frequency Inverters and Provolt's Trajectory

The evolution of frequency inverters has paralleled the advancement of industrial automation since Nikola Tesla's development of the induction motor in 1888. In the 1960s and 1970s, the first inverters based on thyristors (SCRs) emerged, still large, limited, and inefficient. The introduction of bipolar power transistors (BJTs) in the 1970s brought significant improvements in motor control and performance, despite remaining technical challenges. The true transformation occurred in the 1980s and 1990s with the advent of IGBTs (Insulated Gate Bipolar Transistors) and digital signal processors (DSPs). These technologies enabled the development of more compact, efficient, and precise inverters, consolidating them as indispensable components in industrial process automation and control. Founded in 1988 in Blumenau, Santa Catarina, Provolt has actively followed and contributed to this technological trajectory, beginning the development of its own inverters in 1990. Since then, it has continuously incorporated state-of-the-art IGBTs and high-performance DSPs into its products, offering robust and competitive solutions for the industrial sector. Its main lines include the CFP-II, developed entirely in Brazil; the PI, with high performance and a compact design; and the PFlex One, the world's first inverter with a housing produced entirely by 3D printing. Provolt's trajectory reflects the evolution of frequency inverters itself—marked by constant innovation, technological mastery, and a commitment to modern, safe, and reliable industrial solutions.

JOG function

The JOG function in frequency inverters is a feature that allows the motor to operate at a low, manually controlled speed, usually through a specific button or an external command. This function is useful in various situations, especially in industrial and maintenance processes. Operation only occurs as long as the command is activated, normally through an instantaneous actuation key, so the inverter stops immediately when the command is not pressed by the operator.

Main Features of the PFlex One Frequency Inverter

Produced in Brazil national technology. First inverter in the world to be completely produced using 3D printing in ABS. Equipment for general application in controlling three-phase motors, 0.5-1-2 and 3CV models.

RCP MAX Charger Rectifier

Excellent performance in the most varied applications. Developed with cutting-edge technology and controlled by DSP microprocessors, RCP MAX Rectifiers/Chargers offer robustness, precision, ease of use and reliability.