Controlled harmonics power supply for welding-type system
First Claim
Patent Images
1. An inverter-based power source configured to drive a welding-type system comprising:
- a power input configured to receive alternating current (AC) power;
a first rectifier configured to convert the AC power to direct current (DC) power;
an inverter configured to receive the DC power from the rectifier and convert the DC power to AC power;
a controller configured to generate switching signals according to a pattern of offsets from a regular half period and communicate the switching signals to one of the inverter and the rectifier to control operation of the one of the inverter and the rectifier; and
a second rectifier configured to receive the AC power from the inverter and convert the AC power to a welding-type power.
1 Assignment
0 Petitions
Accused Products
Abstract
A system and method for operating an inverted-based power source includes a power input configured to receive alternating current (AC) power and a rectifier configured to convert the AC power to direct current (DC) power. The inverter-based power source also includes an inverter configured to receive the DC power from the rectifier and convert the DC power to AC power and a controller configured to generate switching signals according to a pattern of offsets from a regular half period and communicate the switching signals to the inverter or rectifier control operation of the inverter or rectifier.
22 Citations
19 Claims
-
1. An inverter-based power source configured to drive a welding-type system comprising:
-
a power input configured to receive alternating current (AC) power; a first rectifier configured to convert the AC power to direct current (DC) power; an inverter configured to receive the DC power from the rectifier and convert the DC power to AC power; a controller configured to generate switching signals according to a pattern of offsets from a regular half period and communicate the switching signals to one of the inverter and the rectifier to control operation of the one of the inverter and the rectifier; and a second rectifier configured to receive the AC power from the inverter and convert the AC power to a welding-type power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An inverter-based power source configured to power a welding-type process comprising:
-
a power input configured to receive AC power; a first rectifier configured to convert the AC power to DC power; an inverter having a plurality of switches configured to receive the DC power from the rectifier and convert the DC power to AC power; a clock configured to generate a clock signal having a regular frequency; and a set of programmable logic configured to receive the clock signal and generate a series of control signals based on the clock signal configured to cause the plurality of switches to switch at an irregular frequency; a second rectifier configured to receive the AC power from the inverter and convert the AC power to a welding-type power; and wherein the set of programmable logic is configured to generate the control signals according to a pattern of offsets having an odd number of steps. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
-
Specification