Method for monitoring impedance of electrolyzer, controller and power supply
AssigneeSungrow Power Supply Co., Ltd.
InventorsCai Jiang, Yonghao Liu, Zhixuan Fan
Life of this patent
Estimating the term…
Abstract
A method for monitoring impedance of an electrolyzer, a controller and a power supply system are provided. In the method, according to a basic electric energy command, a power supply connected with the electrolyzer is controlled to output a DC component signal used for normal operation of the electrolyzer, and according to an impedance scanning electric energy command, the power supply is controlled to output AC component signals used to monitor the impedance of the electrolyzer. Further, a voltage vector and a current vector outputted by the power supply are acquired, and an impedance value of the electrolyzer is calculated according to the voltage vector and the current vector.
Claims18
A method for monitoring impedance of an electrolyzer, wherein the electrolyzer is connected to a power supply, and the method comprises:
- acquiring a basic electric energy command and an impedance scanning electric energy command;
- controlling, according to the basic electric energy command and the impedance scanning electric energy command, the power supply to output an expected electric signal, wherein the expected electric signal comprises a direct current (DC) component signal and alternating current (AC) component signals, the DC component signal is used for normal operation of the electrolyzer, and frequencies of the AC component signals are preset frequencies in the impedance scanning electric energy command;
- acquiring, for each of the preset frequencies, a voltage vector and a current vector outputted by the power supply when outputting the DC component signal and an AC component signal having the preset frequency;
- and
- calculating, for each of the preset frequencies, according to the outputted voltage vector and the outputted current vector, an impedance value of the electrolyzer corresponding to the preset frequency.
A controller for monitoring impedance of an electrolyzer, comprising:
- a memory, storing a program;
- and
- a processor, configured to execute the program to:
- acquire a basic electric energy command and an impedance scanning electric energy command;
- control, according to the basic electric energy command and the impedance scanning electric energy command, a power supply to output an expected electric signal, wherein the expected electric signal comprises a direct current (DC) component signal and alternating current (AC) component signals, the DC component signal is used for normal operation of the electrolyzer, and frequencies of the AC component signals are preset frequencies in the impedance scanning electric energy command;
- acquire, for each of the preset frequencies, a voltage vector and a current vector outputted by the power supply when outputting the DC component signal and an AC component signal having the preset frequency;
- and
- calculate, for each of the preset frequencies, according to the outputted voltage vector and the outputted current vector, an impedance value of the electrolyzer corresponding to the preset frequency.
A power supply system for an electrolyzer, comprising:
- a power supply, wherein an output end of the power supply is connected with a voltage sensor and a current sensor, and the output end of the power supply is connected with a power input end of the electrolyzer;
- and
- a controller, configured to:
- acquire a basic electric energy command and an impedance scanning electric energy command;
- control, according to the basic electric energy command and the impedance scanning electric energy command, the power supply to output an expected electric signal, wherein the expected electric signal comprises a direct current, DC, component signal and alternating current, AC, component signals, the DC component signal is used for normal operation of the electrolyzer, and frequencies of the AC component signals are preset frequencies in the impedance scanning electric energy command;
- acquire, for each of the preset frequencies, a voltage vector and a current vector outputted by the power supply when outputting the DC component signal and an AC component signal having the preset frequency;
- and
- calculate, for each of the preset frequencies, according to the outputted voltage vector and the outputted current vector, an impedance value of the electrolyzer corresponding to the preset frequency.
Dependencies are inferred from the claim text.