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TL494: Need current feedback method for inverter design.

Part Number: TL494

I am using the TL494 as a means to generate the reference PWM (frequency set to 45 kHz) for my +28 VDC to 115 VAC 400 Hz inverter.  The power stage is a full "H" Bridge with the primary connected to the bridge.  There are 2 output winding's.  One for the 115 VAC rms 400 Hz.  The other is a 7 VAC rms feedback.  I input an inverted fully rectified sine wave (below) into pin 1 (1 IN+) of the TL494.   The 3.5 volt level is constant ("3.5 volt crossing") which coincides with the TL494 output providing 0% duty cycle.  The amplitude of the rectified AC varies depending on a voltage feedback loop I implemented using a separate feedback winding from the transformer.  Voltage regulation is pretty good with and without load.   My question is should I be also be regulating the current and if so does TI have a reference deign?

Thank you in advance for your support.

Sincerely,

Robert Halversen