A motor drive system control provides global closed loop feedback to
cooperatively operate system components to adaptively reduce noise and
provide noise cancellation feedback. An active EMI filter reduces
differential and common mode noise on an input and provides a noise level
indication to a system controller. Power switches in both a power
converter and power inverter are cooperatively controlled with dynamic
dv/dt control to reduce switching noise according to a profile specified
by the controller. The dv/dt control is provided as an analog signal to a
high voltage IC and codified as a pulse width for a level shifting
circuit supplying control signals to the high voltage gate drive. A noise
extraction circuit and technique obtain fast noise sampling to permit
noise cancellation and adaptive noise reduction.