Control device for ac electric vehicle
AssigneeMitsubishi Electric Corporation
InventorsTakeo Matsumoto, Kotaro Matsuda
Life of this patent
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Abstract
A control device for an AC electric vehicle that is applied to a configuration in which an SIV is connected to an intermediate DC circuit unit between a CONV that converts an AC voltage input through a main transformer to a DC voltage and an INV that converts the DC voltage to an AC voltage, in which a carrier frequency fc of the CONV is changed on the basis of initial temperature (initial value of Tcnv) of a converter main circuit element when a vehicle is stopped and input current Isiv of the SIV such that a temperature variation of a converter main circuit element when the vehicle is stopped is reduced.
Claims6
A control device for an AC electric vehicle that is applied to a configuration in which an auxiliary power unit that supplies power to a load including lighting and air-conditioning is connected to an intermediate DC circuit unit between a converter that converts an AC voltage input through a main transformer to a DC voltage and an inverter that converts the DC voltage to an AC voltage, wherein
- a carrier frequency of the converter is changed on a basis of initial temperature that is a temperature of a converter main circuit element at a time when a vehicle is stopped and input current of the auxiliary power unit such that a temperature variation of the converter main circuit element in a vehicle stopped state where the vehicle has entered a stopped state is reduced.
A control device for an AC electric vehicle that is applied to a configuration in which an auxiliary power unit that supplies power to a load including lighting and air-conditioning is connected to an intermediate DC circuit unit between a converter that converts an AC voltage input through a main transformer to a DC voltage and an inverter that converts the DC voltage to an AC voltage, wherein
- a carrier frequency of the converter is changed on a basis of a difference value between initial temperature that is a temperature of a converter main circuit element at a time when a vehicle is stopped and detected temperature of the converter main circuit element such that a temperature variation of the converter main circuit element in a vehicle stopped state where the vehicle has entered a stopped state is reduced.
Dependencies are inferred from the claim text.