PREDICTION SCHEME FOR STEP WAVE POWER CONVERTER AND INDUCTIVE INVERTER TOPOLOGY
First Claim
1. A step wave power converter comprising:
- multiple different bridge circuits configured to convert DC voltage inputs into AC voltage outputs; and
a processor configured to;
estimate an average voltage output from the multiple different bridge circuits for controlling current output from the multiple different bridge circuits;
identifying how many of the bridge circuits are needed to provide the estimated average output voltage; and
controlling the identified bridge circuits during the next switching period to generate a combined inverter output voltage that corresponds with the estimated average output voltage.
3 Assignments
0 Petitions
Accused Products
Abstract
A step wave power converter comprises multiple different bridge circuits configured to convert DC voltage inputs into AC voltage outputs. A controller is configured to estimate an average voltage output from the multiple different bridge circuits for controlling the current output from the multiple different bridge circuits. The number of bridge circuits needed to provide the estimated average output voltage is identified and the identified bridge circuits controlled during a next switching period to generate a combined inverter output voltage that corresponds with the estimated average output voltage.
In another embodiment, one or more transformers are associated with the different bridge circuits. Inductors are coupled between the bridge circuits and the primary windings of the associated transformers. The inductors filter the current output from the bridge circuits prior to feeding the current into the transformers.
-
Citations
23 Claims
-
1. A step wave power converter comprising:
-
multiple different bridge circuits configured to convert DC voltage inputs into AC voltage outputs; and a processor configured to; estimate an average voltage output from the multiple different bridge circuits for controlling current output from the multiple different bridge circuits; identifying how many of the bridge circuits are needed to provide the estimated average output voltage; and controlling the identified bridge circuits during the next switching period to generate a combined inverter output voltage that corresponds with the estimated average output voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method comprising:
-
using multiple different bridge circuits in a power inverter to convert one or more DC voltage sources into an AC voltage for coupling to a power grid; predicting an output voltage for the inverter for a next switching period according to a measured power grid voltage and measured inverter load current for a switching period; identifying what bridge circuits are needed to substantially produce the predicted output voltage for a next switching period; and activating the identified bridge circuits to substantially output the predicted output voltage while shunting outputs for any non-identified bridge circuits. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
-
-
18. An inverter circuit, comprising:
-
one or more bridge circuits configured to convert one or more Direct Current (DC) voltages into an Alternating Current (AC) voltage; one or more transformers having different primary windings associated with the one or more bridge circuits; and inductors coupled between the bridge circuits and the associated primary windings, the inductors filtering current output from the bridge circuits prior to the current being fed into the associated primary windings. - View Dependent Claims (19, 20, 21, 22, 23)
-
Specification