Inverter drives having a controlled power output
AssigneeControl Techniques Limited
InventorColin HARGIS
Life of this patent
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Abstract
An electromechanical system includes an inverter drive, a component arranged during operation to generate a variable force having one or more periodic frequency components, and processing circuitry arranged to determine the power output of the inverter drive, measure a difference between the power output and a reference power output, and control an output frequency of the inverter drive as a function of the measured difference, so as to stabilise the power output during operation of the component. Other example electromechanical systems, inverter drives and methods are also disclosed.
Claims17
An electromechanical system comprising:
- an inverter drive;
- a component arranged during operation to generate a variable force having one or more periodic frequency components;
- and
- processing circuitry arranged to:
- determine the power output of the inverter drive;
- measure a difference between the power output and a reference power output;
- and
- control an output frequency of the inverter drive as a function of the measured difference, so as to stabilise the power output during operation of the component.
A inverter drive comprising processing circuitry arranged to cause the inverter drive, when the inverter drive is operably connected via an electrical machine to a component arranged during operation to generate a variable force having one or more periodic frequency components, to:
- determine the power output of the inverter drive;
- measure a difference between the power output and a reference power output;
- and
- control an output frequency of the inverter drive as a function of the measured difference, so as to stabilise the power output during operation of the component.
A method of controlling a power output of an inverter drive operably connected via an electrical machine to a component arranged during operation to generate a variable force having one or more periodic frequency components, comprising:
- determining the power output of the inverter drive;
- determining a difference between the power output and a reference power output;
- and
- controlling an output frequency of the inverter drive as a function of the difference, so as to stabilise the power output during operation of the component.
Dependencies are inferred from the claim text.