rectifier circuit device

A technology of rectifier circuit and AC power supply, applied in output power conversion devices, electrical components, high-efficiency power electronic conversion and other directions, can solve problems such as circuit loss, and achieve the effect of less device loss and less high-order harmonic current.
CN102959848BActive Publication Date: 2015-09-02PANASONIC CORP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
PANASONIC CORP
Publication Date
2015-09-02

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Abstract

In order to realize a rectifier circuit device capable of attaining both reduction of power-supply harmonics and reduction of circuit losses, AC-voltage phase detection means 201, AC electric-current detection means 103 and DC-voltage detection means 110 are provided, and chopping is performed on a semiconductor switch 104 in such a way as to follow a desired electric-current waveform. A DC voltage is adjusted such that a phase at which the chopping is halted comes to be a desired phase. Also, when the phase width within which the chopping is continued is less than a set value, the DC voltage is adjusted preferentially such that the phase width within which the chopping is continued comes to be the set value. A target electric-current waveform has a combination of a monotonous increase and a constant value within the former half the period of an AC power supply and, also, has a value of zero in an interval within the latter half thereof.
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Description

technical field

[0001] The present invention relates to a rectifier circuit device, which is suitable for rectifying a single-phase AC power supply such as a household to form a roughly DC power supply, and using the formed DC power supply to drive a DC load; and using an inverter circuit to convert the obtained A device that converts direct current into alternating current of any frequency and drives a motor at a variable speed, such as a device that uses a compressor to compress a refrigerant to form a heat pump for cooling, heating, or freezing of food. The present invention relates to drive control of highly efficient rectifier circuit devices capable of reducing the load on power transmission systems by reducing harmonic components in power supply current contained in such various devices and improving power factors. Background technique

[0002] In the prior art, such a rectifier circuit device such as Figure 10 As shown, through the rectifier bridge 2 and the reactor...

Claims

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