What is an inverter and what industries use it?
Inverters are sometimes referred to as AC Drives, Variable Speed Drive (VSD) or Variable Frequency Drive (VFD) however the correct term is frequency converter. ABB Industrial drives are designed for industrial applications where they can be configured to meet the precise needs of a specific application. The heart of the drive is the DTC, direct torque control that provides high performance and significant benefits such as accurate static and dynamic speed and torque control.
The inverter changes the fixed frequency from the mains to a variable frequency output, in turn this can change the speed of the motor which can lead to a reduced usage in power when driving a pump or a motor for example. A rectifier within drive converts the incoming AC to a DC voltage but when used in a wind turbine application, the rectifier converts the incoming DC to an AC voltage which is then pushed to the grid.
ABB ACS800 Inverters are used in many industries but primarily the following:
Evaluation Process and Repair Procedure
When a unit is shipped in for repair, it is first received in our tracking system and a unique six digit number is created and affixed to the unit, images are taken and the unit is scheduled to be evaluated. Once the evaluation process is completed, the unit is quoted out for repair and awaits approval from the customer.
Once approved, the unit is opened up and completely disassembled to the metal housing, thoroughly inspected and cleaned. All damaged or compromised components are replaced and the unit is rebuilt from ground up.
Once the refurbishment is complete the unit is inspected and visually checked with our 40 point checklist the unit is loaded into our custom ABB ACS800 lineup. The liquid cooling system is first tested and flow rate is checked compared against golden samples.
The unit is then slowly powered up with 1000VDC bus voltage and then parameters set for the model under test. The bus capacitors are formed and the output contactors are engaged and the output current is brought up to 80-90% of full load for a burn in test. After the burn in test all data points are recorded and presented to the customer on a test report.
Finally the inverter is packaged into a moisture resistant bag with desiccant and then placed in a factory standard J-crates with the test report.
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As a leader in the wind and solar energy industry, we have extensive experience with critical and non-critical electronic components that are crucial to wind and solar farms operations. Our experience in this industry along with our engineering services allows us to offer comprehensive technical support and electronic repair capabilities that are unmatched in this industry.
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