Electric machine control
AssigneeSafran Electrical & Power
InventorAndrew Bloor
Life of this patent
Estimating the term…
Abstract
Controlling a DC-AC inverter of an electric machine, where the electric machine comprises a resonant main exciter having rotary transformer. A voltage level of DC power received at a DC-AC inverter is monitored and the frequency of AC power generated by the DC-AC inverter and supplied to the rotary transformer is controlled based at least in part on the voltage level of the DC power.
Claims16
A method of controlling a DC-AC inverter of an electric machine, wherein the electric machine comprises a resonant main exciter having a rotary transformer, the method comprising:
- monitoring a voltage level of DC power received at the DC-AC inverter;
- and
- controlling a characteristic of AC power generated by the DC-AC inverter and supplied to the rotary transformer, wherein controlling the characteristic of the AC power is based at least in part on the voltage level of the DC power, wherein the characteristic of the AC power comprises a frequency of the AC power.
A control unit for controlling a DC-AC inverter of an electric machine, wherein the electric machine comprises a resonant main exciter having a rotary transformer, and wherein the DC-AC inverter is configured to receive DC power, convert the received DC power to AC power, and supply the AC power to the rotary transformer, and wherein the control unit is configured to:
- monitor a voltage level of the DC power received by the DC-AC inverter;
- and
- control a characteristic of the AC power generated by the DC-AC inverter based at least in part on the voltage level of the DC power, wherein the characteristic of the AC power comprises a frequency of the AC power.
An electric machine comprising:
- a resonant main exciter comprising a rotary transformer;
- a DC-AC inverter configured to:
- receive DC power;
- convert the received DC power to AC power;
- and
- supply the AC power to the rotary transformer;
- and
- a control unit for controlling the DC-AC inverter, wherein the control unit is configured to:
- monitor a voltage level of the DC power received by the DC-AC inverter;
- and
- control a characteristic of the AC power generated by the DC-AC inverter based at least in part on the voltage level of the DC power, wherein the characteristic of the AC power comprises a frequency of the AC power, and wherein the control unit is coupled to the DC-AC inverter and is configured to adjust a gain of the electric machine by controlling a characteristic of the AC power generated by the DC-AC inverter.
Dependencies are inferred from the claim text.