Patent ID: 7461516

Claim:
A modular ground support system comprising: a mobile cart; a local power source supported on the mobile cart; an air conditioning system supported on the mobile cart and configured for selective coupling to an aircraft to provide conditioned air to the aircraft, wherein the air conditioning system is configured to receive electrical power from the local power source or from an external power source to enable operation of the air conditioning system; and a modular power converter for converting a first input power to a first output power, the modular power converter configured to be supported on the mobile cart and for selective coupling to the aircraft, wherein the modular power converter is one of a plurality of modular power converters configured to be interchangeably installed on the mobile cart; wherein the modular power converter and the air conditioning system are configured to receive 50 Hz power or 60 Hz power from the local power source or from the external power source, and wherein the modular power converter is configured for removal from the mobile cart and for operation independent of the mobile cart to enable operation of the modular power converter at a first location remote from the mobile cart, and to enable installation of an additional power converter of the plurality of modular power converters onto the mobile cart such that the additional power converter is operable with the mobile cart at a second location.