| 主权项 |
1. A dual alternator system, comprising:
a main alternator controlled by an electronic voltage regulator and a secondary alternator system having a secondary alternator controlled by a local interconnect network (LIN) controlled alternator voltage regulator; an electronic control unit (“ECU”) coupled to the LIN controlled alternator voltage regulator by a LIN bus; the ECU determining that the secondary alternator should be off when a duty cycle of a pulse width modulated drive signal generated by the electronic voltage regulator to drive the main alternator is not above a low threshold and determining that the secondary alternator should be operated to generate current when the duty cycle of the pulse width modulated drive signal generated by the electronic voltage regulator to drive the main alternator is above the low threshold; the ECU, when it determines that the secondary alternator should be off, sends a voltage setpoint signal to the LIN controlled alternator voltage regulator having a low value that is well below nominal system voltage; and the ECU, when it determines that the secondary alternator should be operated to provide current, sends a voltage setpoint to the LIN controlled alternator voltage regulator having a high value that is well above a nominal system voltage and a maximum excitation current limit (MECL) setpoint value. |
