CONVERTER HAVING A DAMPING CONTROL CIRCUIT
First Claim
1. A converter comprising:
- a control device having two input terminals and an output side, a pulse width modulator having an input side connected to the output side of the control device;
a load-side inverter having control inputs connected on the output side of the pulse width modulator and an output side with three output terminals;
a current measuring device having an input side and an output side with two outputs, said input side connected to two of the three output terminals of the load-side inverter, said two outputs of the current measuring device being connected in one-to-one correspondence to two measurement inputs of the control device; and
a two-channel damping control circuit having two control-circuit channels with corresponding inputs and outputs, with each input of the control-circuit channel being connected to a different one of the two outputs of the current measuring device, and with the outputs being connected to an inverting adder, wherein the respective outputs of the two control-circuit channels and the output of the inverting adder are connected to corresponding inputs of the pulse width modulator.
1 Assignment
0 Petitions
Accused Products
Abstract
A converter (34) includes a control device (6) connected at its output to a pulse width modulator (8), which is connected on the output side to control inputs of a load-side inverter (10), and a current measuring device (4), which is connected on the input side to two terminals of the load-side inverter (10), and on the output side to two measurement inputs of the control device (6). Further provided is a two-channel damping control circuit (38), whose control-circuit channels (56, 58) are each connected on the input side to an output of the current measuring device (4), and on the output side to an inverting adder (54), and the outputs of the two control-circuit channels (56, 58) and the output of the inverting adder (54) are connected to inputs of the pulse width modulator (8). As a result, a converter (34) is realized that can actively dampen a connected undamped inverter output-filter (36) without causing an additional control dead time.
-
Citations
14 Claims
-
1. A converter comprising:
-
a control device having two input terminals and an output side, a pulse width modulator having an input side connected to the output side of the control device;
a load-side inverter having control inputs connected on the output side of the pulse width modulator and an output side with three output terminals;
a current measuring device having an input side and an output side with two outputs, said input side connected to two of the three output terminals of the load-side inverter, said two outputs of the current measuring device being connected in one-to-one correspondence to two measurement inputs of the control device; and
a two-channel damping control circuit having two control-circuit channels with corresponding inputs and outputs, with each input of the control-circuit channel being connected to a different one of the two outputs of the current measuring device, and with the outputs being connected to an inverting adder, wherein the respective outputs of the two control-circuit channels and the output of the inverting adder are connected to corresponding inputs of the pulse width modulator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
Specification