Inverter controlled electric motor, how much frequency can be adjusted?
When using a frequency converter, the output voltage and frequency of the converter are gradually added to the motor, so the starting current and impact on the motor
The frequency corresponding to the maximum output voltage of the inverter is called the basic frequency; b. When the output voltage of the frequency converter is equal to the rated voltage, the minimum output frequency is called the basic frequency. The fundamental frequency is represented by fBA.
In Central Europe, the grid frequency is 50 Hz. Frequency inverters first convert the incoming AC voltage into DC voltage and then back into (adjusted) AC voltage. As a result, the downstream motor has a steplessly adjustable speed range between 0 and the rated speed, without losses in torque.
Current-driven frequency inverters keep the ratio of current to frequency constant; voltage-driven models stabilise the ratio of voltage to frequency. In Central Europe, the grid frequency is 50 Hz. Frequency inverters first convert the incoming AC voltage into DC voltage and then back into (adjusted) AC voltage.
Frequency inverters are made up of the following main assemblies: The rectifier converts the AC voltage on the input side into DC voltage. The electrical components needed for this are known as uncontrolled or controlled bridges, such as thyristors or transistors.
PDF version includes complete article with source references. Suitable for printing and offline reading.
Download detailed product specifications, case studies, and technical data for our off-grid PV containers and mobile energy storage solutions.
15 Innovation Drive
Johannesburg 2196, South Africa
+27 87 702 3126
Monday - Friday: 7:30 AM - 5:30 PM SAST