Method for producing an output voltage and assembly for performing the method
First Claim
1. A method for generating a frequency variable AC output voltage from a controllable DC input voltage utilizing a multilevel power converter having a plurality of sub modules, the method comprising:
- switching the sub-modules on and off to generate from the DC input voltage discrete voltage steps approximating a sinusoidal alternating AC output voltage at a M2C controlled output frequency, andcontrolling or regulating the DC input voltage in correlation with the output frequency of the AC output voltage such that the DC input voltage increases with increasing output frequency.
2 Assignments
0 Petitions
Accused Products
Abstract
In a method for generating with a modular multilevel power converter (M2C) having a plurality of sub-modules a frequency-variable output voltage, the sub-modules are switched on and off to generate from an input voltage discrete voltage steps approximating an approximately sinusoidal alternating output voltage having a first angular frequency located between a zero frequency and a second angular frequency, and the input voltage is controlled or regulated as a function of the first angular frequency so as to be located between a lower angular frequency, which is equal to or greater than the zero frequency, and a third angular frequency, such that the input voltage increases with increasing first angular frequency, thereby reducing capacitor complexity in the power converter.
15 Citations
15 Claims
-
1. A method for generating a frequency variable AC output voltage from a controllable DC input voltage utilizing a multilevel power converter having a plurality of sub modules, the method comprising:
-
switching the sub-modules on and off to generate from the DC input voltage discrete voltage steps approximating a sinusoidal alternating AC output voltage at a M2C controlled output frequency, and controlling or regulating the DC input voltage in correlation with the output frequency of the AC output voltage such that the DC input voltage increases with increasing output frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. An assembly for generating a frequency variable AC output voltage from a controllable DC input voltage, the assembly comprising:
-
a modular multilevel power converter (M2C) comprising a DC input side and a plurality of sub-modules connected in series and each forming a branch, with each branch generating a corresponding AC output voltage having a controlled frequency from the DC input voltage, and a device producing a controllably variable DC output voltage and being coupled to the DC input side of the power converter, wherein the variable DC output voltage is varied commensurate with the output frequency such that the DC input voltage to the converter increases with increasing output frequency. - View Dependent Claims (11, 12, 13, 14, 15)
-
Specification