Inductive power transfer transmitter and system

An inductive power transfer transmitter comprising:

• an inverter sub-circuit comprising at least one inverter, and;
• and
• a tuned circuit comprising a plurality of components including at least:
• a transmitting coil;
• a first tuning network comprising an inductor, and a capacitor;
• and
• a second tuning network comprising a first additional component,
• wherein the transmitting coil, the inductor, the capacitor, and the first additional component are each placed on separate branches of the tuned circuit, and
• wherein the plurality of components are arranged such that the tuned circuit is configured to be remodeled as if the transmitting coil is series tuned so that the tuned circuit is configured to vary current through the transmitting coil to compensate for variations in K coefficient, and provide an output current from the inverter sub-circuit independent of a transmitting coil current.