Power converter, power converting system, and power converter control method

A power converting system, comprising:

• a dc generator configured to output a High Voltage Direct Current voltage;
• a power converting circuit comprising a high-voltage side electrically coupled to the dc generator and a low-voltage side electrically coupled to a load, wherein the power converting circuit is configured to convert the High Voltage Direct Current voltage to a Low Voltage Direct Current voltage to the low-voltage side ;
• a high-voltage control circuit electrically coupled to the high-voltage side to detect the High Voltage Direct Current voltage and output a first control signal;
• a low-voltage control circuit electrically coupled to the low-voltage side to detect the Low Voltage Direct Current voltage and output a second control signal;
• a processing circuit configured to output a high-voltage command to the high-voltage control circuit and control an activation of the high-voltage control circuit, and further configured to output a low-voltage command to the low-voltage control circuit and control an activation ofthe low-voltage control circuit;
• and
• a driving circuit configured to selectively output a driving signal to drive the power converting circuit according to the first control signal or the second control signal.

A power converter control method, comprising:

• a) providing a power converting circuit having a high-voltage side for coupling with High Voltage Direct Current source output, and a low-voltage side for coupling with a Low Voltage Direct Current load;
• b) providing a high-voltage control circuit electrically coupled to the high-voltage side;
• c) providing a low-voltage control circuit electrically coupled to the low-voltage side;
• d) converting, by the power converting circuit, a High Voltage Direct Current voltage from the high-voltage side to a Low Voltage Direct Current voltage, and outputting the Low Voltage Direct Current voltage to the low-voltage side;
• e) selectively activating, by a processing circuit, the high-voltage control circuit or the low-voltage control circuit,
• wherein if the high-voltage control circuit is activated, the method further comprises:
• i-1) detecting, by the high-voltage control circuit, the High Voltage Direct Current voltage, and outputting a first control signal;
• and
• i-2) outputting a driving signal according to the first control signal, by a driving circuit, to drive the power converting circuit and control the High Voltage Direct Current voltage corresponding to the first control signal,
• and wherein if the low-voltage control circuit is activated, the method further comprises:
• ii-1) detecting, by the low-voltage control circuit, the Low Voltage Direct Current voltage, and outputting a second control signal;
• and
• ii-2) outputting a driving signal according to the second control signal, by a driving circuit, to drive the power converting circuit and control the Low Voltage Direct Current voltage corresponding to the second control signal.