Power system and method for driving an electromotive traction system and auxiliary equipment through a common power bus

A method for arranging and operating a powered system comprising:

• coupling a power bus to receive electrical power from a power source;
• coupling a traction system to the power bus, wherein the traction system comprises at least one electromotive machine having a first type of stator winding configured to provide a level of protection relative to voltage spikes expected at the traction stator under a first voltage level appropriate for the traction system;
• coupling auxiliary equipment to the power bus wherein the auxiliary equipment comprises at least one electromotive machine having a second type of stator winding configured to provide a level of protection relative to voltage spikes expected at the auxiliary stator under a second voltage level, wherein the second voltage level is lower than the first voltage level;
• coupling inverter circuitry to drive the auxiliary equipment;
• operating the power bus at the first voltage level;
• and
• conditioning signals from the inverter circuitry to the auxiliary equipment to attenuate voltage spikes produced by the inverter circuitry, wherein the voltage spike attenuation is sufficient to protect the auxiliary stator notwithstanding of operating the power bus at the first voltage level.

A method for providing electrical power in a powered system, the method comprising:

• operating a power bus at a first voltage level, wherein the power bus receives electrical power from a power source;
• drawing power from the power bus at a traction system, wherein the traction system comprises at least one electromotive machine having a first type of stator winding configured to provide a level of protection relative to voltage spikes expected at the traction stator under the first voltage level;
• drawing power from the power bus through inverter circuitry connected to the bus, said power being drawn by auxiliary equipment comprising at least one electromotive machine having a second type of stator winding configured to provide a level of protection relative to voltage spikes expected at the auxiliary stator under a second voltage level, and wherein the second voltage level is lower than the first voltage level;
• and
• conditioning the power drawn through the inverter circuitry to attenuate voltage spikes produced by the inverter circuitry, wherein the voltage spike attenuation is sufficient to protect the auxiliary stator notwithstanding of operating the power bus at the first voltage level.