AC inverter pre-charge current limiting system

A method for providing vehicle pre-charge limiting, the method comprising:

• inverting, via an inverter, a first power signal into a second power signal based on an input voltage;
• receiving a first measured current of the second power signal;
• comparing the first measured current to a predetermined current value;
• generating a first control signal indicative of the first measured current exceeding the predetermined current value;
• transmitting a second control signal from a latch circuit to the inverter to discontinue inverting the first power signal in response to the first control signal;
• transmitting a first latch signal indicative of the inverter discontinuing the inversion of the first power signal;
• receiving, at a microprocessor, a first sense signal indicative of current of the first power signal;
• transmitting a third control signal from the microprocessor to the latch circuit to enable the inverter to invert the first power signal into the second power signal for a predetermined number of output periods in response to the first latch signal;
• and
• establishing the predetermined number of output periods based on the first sense signal.

A vehicle pre-charge limiting system comprising:

• an inverter being configured to invert a rectified DC input into an AC signal based on an input voltage;
• a comparator configured to:
• receive a first measured current of the AC signal;
• compare the first measured current to a predetermined current value;
• and
• transmit a first control signal indicative of the first measured current exceeding the predetermined current value;
• a latch circuit configured to:
• transmit a second control signal to the inverter to discontinue inverting the rectified DC input in response to the first control signal;
• and
• transmit a first latch signal indicative of the inverter discontinuing the inversion of the rectified DC input;
• and
• a microprocessor configured to:
• receive a first sense signal indicative of current of the rectified DC input;
• transmit a third control signal to the latch circuit to enable the inverter to invert the rectified DC input into the AC signal for a predetermined number of output periods in response to the first latch signal;
• and
• establish the predetermined number of output periods based on the first sense signal.