Inverter Drive System Repair

The regulation of energy in any operation is critical to performance and output – in cases where power isn’t controlled the result can be damaged equipment or high maintenance costs – and lost production time.

The role of an inverter drive system is to handle energy coming from the main power source. When the power arrives at the inverter, the first step is to convert it from AC to DC power, which occurs in the rectifier. 

Inverter Drive System

Once the power has been converted, it then goes into a set of capacitors. Here, the energy is “smoothed out” – basically the waveform is adjusted for safe consumption by the machinery. Once this occurs, the power is fed to the motor.

It’s an important step since the frequency and voltage is modified based on the amount of energy that is needed – this step not only saves energy and reduces power costs, it also helps ensure that the machinery is running properly.

Factors that Cause Damage

Like any piece of machinery, an inverter drive system can fall prey to a variety of problems that can be caused by internal failure, the operating environment, and overuse. Without proper maintenance the machinery can function below capacity or ultimately wear out.

Capacitor Wear

Capacitors are an integral part of an inverter, and they can wear down due to their sensitivity to temperatures. High current causes increased heat, which is why it’s crucial to regulate the operating speed of any system.


Relying on one inverter or a bank of inverters that aren’t right for the job speeds up the wear and tear on an inverter. Over time, despite regular maintenance, the parts simply wear down and then break.

Over Voltage

When voltage increases beyond the capacity of the inverter, components can be severely damaged and cease to work, mostly due to excessive heat. Fuses and circuit breakers usually regulate this problem. Sometimes, though there are power surges that overcome these fail safes and can be attributed to lightning strikes and even solar flares.


Regardless of the age or quality of machinery, vibrations are unavoidable. Excessive vibration can loosen electronics or cause them to corrode. Heat caused by vibration is another culprit. Simple maintenance procedures, which can easily be forgotten include cleaning terminals in the battery box, fuses, and the inverter connection.

ACS Can Repair Your Inverter Drive

Despite making sure the inverter drive is installed properly and maintained, breakage can occur and the power source’s output might not be regulated. This can cause multiple problems throughout the system. 

If you’re considering whether to repair your inverter drive system then choose ACS and let us give you a free evaluation and repair quote.

  • Repair usually saves up to 80% the cost of buying a new piece of equipment.
  • Most repairs are back in your hands in 7-15 days after approval.
  • Our Rush Repair Service ships in just 2-5 days after approval.
  • We Guarantee Our Repairs With A Full Two-Year Warranty .

For a Free Evaluation, use our RMA Form link or visit our website and click on the “Contact Us” button on the upper right hand. You can also reach out to us at 800-605-6419 and speak to someone on our customer support team.