US 12,266,504 B2
Method and apparatus for emulating a reactive source impedance of a generator
Gideon Johannes Jacobus Van Zyl, Fort Collins, CO (US)
Assigned to Advanced Energy Industries, Inc., Fort Collins, CO (US)
Filed by Advanced Energy Industries, Inc., Fort Collins, CO (US)
Filed on Aug. 25, 2021, as Appl. No. 17/411,143.
Application 17/411,143 is a continuation of application No. 16/158,147, filed on Oct. 11, 2018, granted, now 11,139,148.
Claims priority of provisional application 62/570,693, filed on Oct. 11, 2017.
Prior Publication US 2022/0084790 A1, Mar. 17, 2022
Int. Cl. H01J 37/32 (2006.01); G01R 27/16 (2006.01); G01R 27/32 (2006.01); G01R 21/01 (2006.01); H03H 7/40 (2006.01)
CPC H01J 37/32183 (2013.01) [G01R 27/16 (2013.01); G01R 27/32 (2013.01); H01J 37/32174 (2013.01); G01R 21/01 (2013.01); H03H 7/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for emulating a reactive source impedance for a generator, the generator coupled to a first controller, a second controller, and a load, the method comprising:
adjusting an output of the generator with the first controller, wherein, in response to adjustment of the output, a first value calculated with respect to a weighted sum of measured voltage v, measured current i, and derivatives of the measured voltage v and the measured current i tends to a first setpoint for the first value;
receiving, at the second controller, a second setpoint for a conventional measure of generator output and a second measured value of the conventional measure of generator output;
modifying, with the second controller, the first setpoint to the first controller and adjusting the second measured value towards the second setpoint, wherein holding the first value constant when adjusting the second measured value emulates a desired source impedance of the generator.