US 12,278,588 B2
Method and apparatus for controlling output power of generator, and generator system
Lei Wang, Shenzhen (CN); and Xi Chen, Shenzhen (CN)
Assigned to ECOFLOW INC., Shenzhen (CN)
Filed by ECOFLOW INC., Shenzhen (CN)
Filed on Oct. 10, 2023, as Appl. No. 18/483,910.
Application 18/483,910 is a continuation of application No. PCT/CN2022/086165, filed on Apr. 11, 2022.
Claims priority of application No. 202110405228.9 (CN), filed on Apr. 15, 2021.
Prior Publication US 2024/0048078 A1, Feb. 8, 2024
Int. Cl. H02P 9/00 (2006.01)
CPC H02P 9/006 (2013.01) 12 Claims
OG exemplary drawing
 
1. A method for controlling an output power of a generator, wherein at least two output circuits are disposed on an output end of the generator, at least one output circuit of the output circuits is configured as a target controlled circuit, and the method comprises:
obtaining an output voltage value of the generator, an output current value of the target controlled circuit, and an output voltage value of the target controlled circuit;
obtaining an overload voltage reference value of the generator, an output voltage reference value of the target controlled circuit, and an output current reference value of the target controlled circuit;
performing calculation according to the output voltage value of the generator, the output current value of the target controlled circuit, the output voltage value of the target controlled circuit, the overload voltage reference value of the generator, the output voltage reference value of the target controlled circuit, and the output current reference value of the target controlled circuit, to obtain a target control variable; and
generating a drive signal according to the target control variable, and sending the drive signal to the target controlled circuit, so that the target controlled circuit regulates an output power according to the drive signal,
wherein performing the calculation according to the output voltage value of the generator, the output current value of the target controlled circuit, the output voltage value of the target controlled circuit, the overload voltage reference value of the generator, the output voltage reference value of the target controlled circuit, and the output current reference value of the target controlled circuit, comprises:
performing calculation according to the output voltage value and the overload voltage reference value of the generator, to obtain a first difference, and obtaining a first current loop given value according to the first difference;
using a smaller value of the first current loop given value and the output current reference value as a first comparison value, performing calculation according to the first comparison value and the output current value of the target controlled circuit, to obtain a second difference, and obtaining a first control variable according to the second difference;
performing calculation according to the output voltage reference value of the target controlled circuit and the output voltage value of the target controlled circuit, to obtain a third difference, and obtaining a second control variable according to the third difference; and
using a smaller value of the first control variable and the second control variable as the target control variable.