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CONVERTER CIRCUIT, AND MOTOR DRIVE CONTROLLER EQUIPPED WITH CONVERTER CIRCUIT, AIR CONDITIONER, REFRIGERATOR, AND INDUCTION COOKING HEATER
CONVERTER CIRCUIT, AND MOTOR DRIVE CONTROLLER EQUIPPED WITH CONVERTER CIRCUIT, AIR CONDITIONER, REFRIGERATOR, AND INDUCTION COOKING HEATER
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机译:转换器电路,以及配备有转换器电路,空调,制冷器和感应烹饪加热器的电动机驱动控制器
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摘要
To obtain a converter circuit capable of being made to be small and light-weighted and reducing switching loss, a motor drive control apparatus, an air-conditioner, a refrigerator, and an induction heating cooker provided with the circuit. There are provided: a step-up converter 3a including a rectifier 2, a step-up reactor 4a, a switching element 5a, and a reverse current prevention element 6a; a step-up converter 3b having a step-up reactor 4b, a switching element 5b, and a reverse current prevention element 6b and connected in parallel with the step-up converter 3a; switching control means 7 that controls switching elements 5a and 5b; and a smoothing capacitor that is provided at the output of the step-up converters 3a and 3b. The switching control means 7 switches the current mode of the current flowing through the step-up reactors 4a and 4b into any of a continuous mode, a critical mode, and a discontinuous mode based on a predetermined condition.
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