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DC power-supply device, motor drive device including the same, and refrigeration-cycle application device including the motor drive device
DC power-supply device, motor drive device including the same, and refrigeration-cycle application device including the motor drive device
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机译:直流电源装置,包括该直流电源装置的电动机驱动装置以及包括该电动机驱动装置的制冷循环施加装置
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摘要
A first reactor is provided on the input side of a rectifying circuit that rectifies AC power (on the side of an AC power supply), and on the output side of the rectifying circuit (on the side of a load), first and second capacitors that are connected in series to each other, and first and second switching elements that switch between charging and not charging of the first and second capacitors, respectively, are provided, a second capacitor group in Y-connection, provided with three capacitors, each of which is connected to each phase-terminal of the first reactor on the side of the rectifying circuit, is connected to the midpoint of the first and second switching elements, and the output voltage to the load is boosted, while the on-duty of the first switching element and the on-duty of the second switching element are controlled to be equal to each other.
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