Bi-directional power control system for voltage converter

A voltage limiting system for a voltage converter, the control system comprising:

• a command multiplier for converting a voltage signal across output terminals of the converter to a gain signal having a value between zero (0) and unity (1);
• a current multiplier for multiplying a commanded current signal by the gain signal to provide a limited commanded current signal;
• a current comparator for comparing the limited commanded current signal with a measured current signal on an output terminal of the converter and producing a current comparison signal;
• a current regulator for transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal;
• and
• a PWM for using the PWM duty cycle command signal to control electrical switches of the converter.

A control system for regulating bi-directional power flow from a power bus through a voltage converter to an auxiliary energy storage device, the control system comprising:

• a power comparator for comparing a power signal on output terminals of the converter with a commanded power signal and producing a power comparison signal;
• a power regulator for transforming the power comparison signal to a commanded current signal;
• a current comparator for comparing the commanded current signal with a measured current signal on the output terminals of the converter and producing a current comparison signal;
• a current regulator for transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal;
• a PWM for using the PWM duty cycle command signal to control electrical switches of the converter.

A control system for regulating bi-directional power flow from a multi-phase power bus through a voltage converter to an auxiliary energy storage device, the control system comprising:

• a power comparator for comparing power signals on input terminals of the converter with commanded power signals and producing power comparison signals;
• a power regulator for transforming the power comparison signals to commanded current signals;
• a current comparator for comparing the commanded current signals with measured current signals on the input terminals of the converter and producing current comparison signals;
• a current regulator for transforming the current comparison signals to pulse width modulator (PWM) duty cycle command signals;
• a PWM for using the PWM duty cycle command signals to control electrical switches of the converter.

A method for regulating bi-directional power flow from a power bus through a voltage converter to an auxiliary energy storage device, the method comprising:

• comparing a power signal on input terminals of the converter with a commanded power signal and producing a power comparison signal;
• transforming the power comparison signal to a commanded current signal;
• comparing the commanded current signal with a measured current signal on output terminals of the converter and producing a current comparison signal;
• transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal;
• and
• using the PWM duty cycle command signal to control electrical switches of the converter.

A method for regulating bi-directional power flow from a power bus through a voltage converter to an auxiliary energy storage device while limiting voltage on the auxiliary energy storage device, the method comprising:

• converting a voltage signal across output terminals of the converter to a gain signal having a value between zero (0) and unity (1);
• multiplying a commanded current signal by the gain signal to provide a limited commanded current signal;
• comparing the limited commanded current signal with a measured current signal on an output terminal of the converter and producing a current comparison signal;
• transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal;
• and
• using the PWM duty cycle command signal to control electrical switches of the converter.

A method for regulating bi-directional power flow from a power bus through a voltage converter to an auxiliary energy storage device, the method comprising:

• comparing a power signal on output terminals of the converter with a commanded power signal and producing a power comparison signal;
• transforming the power comparison signal to a commanded current signal;
• comparing the commanded current signal with a measured current signal on the output terminals of the converter and producing a current comparison signal;
• transforming the current comparison signal to a pulse width modulator (PWM) duty cycle command signal;
• and
• using the PWM duty cycle command signal to control electrical switches of the converter.

A method for regulating bi-directional power flow from a multi-phase power bus through a voltage converter to an auxiliary energy storage device, the method comprising:

• comparing power signals on input terminals of the converter with commanded power signals and producing power comparison signals;
• transforming the power comparison signals to commanded current signals;
• comparing the commanded current signals with measured current signals on the input terminals of the converter and producing current comparison signals;
• transforming the current comparison signals to pulse width modulator (PWM) duty cycle command signals;
• using the PWM duty cycle command signals to control electrical switches of the converter.