Method for controlling inverters

Details Method for controlling inverters Method for controlling inverters

2007-07-17

2010-12-28

Vu, Bao Q (Department: 2838)

Electric power conversion systems

Current conversion

Having plural converters for single conversion

C363S072000

Reexamination Certificate

active

07859871

ABSTRACT:
The invention relates to a method for controlling the voltage and power of several HF inverters (2), connected in parallel at the output, of an electrically isolated inverter assembly as well as for distributing the load to these HF inverters (2) each consisting of at least one DC-DC converter (3), one intermediate circuit (4) and one DC-AC converter (5), with a command variable (Ui′) being formed for each HF inverter (2) so as to preset a nominal value for control of an intermediate-circuit voltage (UZKi) at the intermediate circuit (4) of the HF inverter (2). The load of each HF inverter (2) is determined by a control unit (13) by measuring the current or power required, an internal resistance of the HF inverter (2) is simulated via which internal resistance a virtual voltage drop (UVR) is caused which depends on the load determined and is used for controlling the voltage (UZKi) of the intermediate circuit (4) so as to produce a purposive change in the output voltage of each HF inverter (2).

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International Search Report.
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