Frequency and compact converters Everything from one source

  • Vollumfänglicher Service

  • Funktions- und Lasttests

  • Auch Reparaturen von abgekündigten Baugruppen und Serien

  • Aufwendige Migration auf Nachfolgeprodukte entfällt

  • Zertifizierungen Ihrer Maschinen und Anlagen bleiben erhalten

  • Alles aus einer Hand - „one face to the customer“

Frequency and compact converters - BVS Industrie-Elektronik

So that your machines and systems still get the right power tomorrow.

In the course of obsolescence as well as general procurement management for machines and plants, maintenance staff often have to resort to a variety of service providers for the repair and maintenance of control and drive technology.

This is especially true when additional devices from a very wide range of manufacturers are part of the core installed base and are no longer covered by the control/machine manufacturer’s support. Otherwise frequency converters and compact converters have to be repaired and serviced on a frequent basis, which raises the operation’s costs for organisation and time.

You can save these costs with us. Because BVS Electronics GmbH works with a range of manufacturers and covers a broad selection of CNC, PLC and ROBOT automation technology. In keeping with the motto “one face to the customer”.

Send in your module to us and we’ll quickly make you an attractive offer for the repair.

We test the function of all frequency converters with a load. In this process, adaptations are made to the module’s respective range of tasks and both synchronous and asynchronous motors with magnetic powder brakes are used to create a realistic testing scenario.

You’ll receiv information about the respective warranty for the modules and function repairs with your offer.

Your benefit:
Our services from one source help you to bundle time and resources and eliminate the need for expensive migration to successor products. Certifications for your machinery and systems will be preserved. In doing so, we don’t just optimise your maintenance costs, we also ensure that your machinery and systems get “the right power” on a long-term basis.


In addition to the brands in our BVS portfolio, we support:

  • Siemens
  • Lenze
  • Fanuc
  • Bosch Rexroth
  • SEW-Eurodrive
  • ...

and the most popular manufacturers:

  • Danfoss
  • Mitsubishi
  • KEB
  • Getriebebau Nord
  • Telemecanique
  • Lust
  • Hitachi
  • Stöber
  • Refu
  • Moeller
  • Allen-Bradley
  • Control Techniques
  • Berges electronic
  • Omron
  • Eurotherm
  • Vectron

Many others upon request.

What does a frequency converter do?

A frequency converter is an electronic device used in industrial applications to control the speed of electric motors. Also known as an inverter, it plays a crucial role in regulating and adjusting the performance of motors.

The main function of a frequency converter is to change the frequency and voltage of the supplied alternating current in order to adjust the speed of the connected motor. By adjusting the frequency, the motor's speed can be increased or decreased, while the voltage is regulated to ensure stable performance.

The significance of frequency converters in industrial applications is enormous. They enable precise control of motor speed, which in turn enhances the flexibility and efficiency of production processes. In areas such as manufacturing, mining, pump technology, and air conditioning, frequency converters have become indispensable for optimizing motor performance and energy consumption.

By using frequency converters, motors can be started and stopped smoothly, leading to longer equipment lifespan and reduced wear. Moreover, they allow for precise control of torque and position, which is of great importance in applications with high requirements for accuracy and reliability.

The operation of frequency converters

A frequency converter operates by converting input alternating current into variable output alternating current with adjustable frequency and voltage. This enables precise control of the speed of electric motors in industrial applications. To understand this process, let's examine the fundamental principles of how frequency converters work.

A frequency converter consists of several important components that work closely together to achieve the desired conversion. These components include a rectifier, an intermediate circuit, and an inverter.

The rectifier is the first part of the frequency converter. Its task is to convert the input alternating current into direct current. This is done using semiconductor devices such as diodes, which redirect the alternating current into a unified current direction. The rectifier ensures a stable direct voltage that is used in the next step.

The intermediate circuit is a crucial component of the frequency converter. It serves as an energy storage and smoothes out the direct current generated by the rectifier. Typically, the intermediate circuit consists of capacitors that are capable of maintaining electrical power and ensuring a consistent power supply.

The inverter is the final component of the frequency converter and plays a crucial role in converting the direct current into variable output alternating current. The inverter utilizes semiconductor switches like transistors to convert the direct current into an alternating voltage with adjustable frequency and voltage. By rapidly switching the transistors, the direct current is transformed into a pulsating alternating voltage, which is then smoothed by filters to generate a pure sinusoidal output voltage.

The frequency converter allows for precise adjustment of the frequency and voltage of the generated output alternating current. This is achieved by controlling the switching frequency of the transistors in the inverter. By adjusting the frequency, the motor speed can be controlled, while voltage adjustment ensures stable performance.

Overall, the components of a frequency converter work together to enable the conversion of input alternating current into variable output alternating current with adjustable frequency and voltage. This opens up the possibility of precisely controlling the speed of electric motors and adapting them to the specific requirements of various industrial applications. Frequency converters are therefore crucial for performance optimization and energy efficiency in many industrial processes.