Pulse width modulation method
AssigneeDaikin Industries, Ltd.
InventorsMinoru Kitou, Naoto Kobayashi
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Abstract
A locus of integrals, in terms of time, of unit voltage vectors forms a loop within a period shorter than a reciprocal of a maximum value of an operating frequency, in terms of electrical angle, of a compressor motor, the unit voltage vectors being voltage vectors that are units composing an instantaneous space vector indicating voltage which an inverter for driving the compressor motor outputs except in a dead time period.
Claims14
A pulse width modulation method in which a locus of integrals, in terms of time, of unit voltage vectors forms a loop within a period shorter than a reciprocal of a maximum value of an operating frequency, in terms of electrical angle, of a compressor motor, said unit voltage vectors being voltage vectors that are units composing an instantaneous space vector indicating voltage which an inverter for driving said compressor motor outputs except in a dead time period.
Dependencies are inferred from the claim text.