Method of initiating a regenerative converter and a regenerative converter
AssigneeKone Corporation
InventorsLauri STOLT, Juhamatti NIKANDER
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Abstract
The invention is related to a method of initiating a regenerative converter (1) and corresponding converter (1) including a line bridge (2) and a machine bridge (3), which are interconnected via a DC intermediate circuit (8A, 8B). The method comprises charging, through the line bridge (2) and while the machine bridge (3) remains inactive, the DC intermediate circuit (8A, 8B) to a target voltage (14) higher than peak value of the mains voltage (13).
Claims16
A method of initiating a regenerative converter including a line bridge and a machine bridge, which are interconnected via a DC intermediate circuit,
- the method comprising:
- charging, through the line bridge and while the machine bridge remains inactive, the DC intermediate circuit to a target voltage higher than peak value of the mains voltage.
A regenerative converter, comprising:
- a line bridge for connecting to the mains;
- a machine bridge for connecting to the windings of an electric machine;
- a DC intermediate circuit connecting together the line bridge and the machine bridge;
- a control coupled to both the line bridge and the machine bridge, the control being configured to:
- cause, while the machine bridge remains inactive, the line bridge to charge the DC intermediate circuit to a target voltage higher than peak value of the mains voltage.
Dependencies are inferred from the claim text.