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Control device for rectifier circuit device and rectifier circuit device

A rectifier circuit and control device technology, which is applied in the direction of high-efficiency power electronic conversion, output power conversion device, irreversible AC power input conversion to DC power output, etc., can solve problems such as circuit loss, achieve less circuit loss, high-order The effect of less harmonic current

Active Publication Date: 2015-05-06
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the conventional rectifier circuit device, there is a problem that when the semiconductor switch 3c is turned on / off (ON / OFF) at a frequency sufficiently higher than the frequency of the AC power supply 1 very finely (that is, at a very small pitch), ) driving, when chopping the AC voltage of the AC power supply 1 (hereinafter referred to as "semiconductor switch chopping operation" or "semiconductor switch chopping"), since the current flows through the semiconductor switch 3c, a circuit loss occurs

Method used

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  • Control device for rectifier circuit device and rectifier circuit device
  • Control device for rectifier circuit device and rectifier circuit device
  • Control device for rectifier circuit device and rectifier circuit device

Examples

Experimental program
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Effect test

Embodiment approach 1

[0107] figure 1 It is a circuit diagram showing the configuration of the rectifier circuit device according to Embodiment 1 of the present invention. figure 1 In this example, one circuit is formed by short-circuiting two output terminals of a single-phase AC power supply 1 via a reactor 102 using a semiconductor switch 104 . The current detector 103 as an alternating current detection unit detects the current of this circuit, and outputs a signal indicating the detected current value Iac to the control circuit 100 . When the semiconductor switch 104 is turned on (ON), the current of the reactor 102 increases. On the other hand, when semiconductor switch 104 is turned OFF, the current flowing through reactor 102 is rectified by diode bridge circuit 105 , and the rectified current flows into smoothing capacitor 106 and load 4 to drive load 4 . The DC voltage Vdc across the smoothing capacitor 106 applied to the load 4 is detected by the DC voltage detector 110 , and the DC ...

Embodiment approach 2

[0145] Hereinafter, a rectifier circuit device and a control device for the rectifier circuit device according to Embodiment 2 of the present invention will be described.

[0146] In the rectifier circuit device according to Embodiment 1 described above, the phase width θw for chopping is detected ON , using the phase width θw ON Adjust DC voltage command Vdc * . However, in the rectifier circuit device according to Embodiment 2 of the present invention, by detecting the phase width at which chopping stops (hereinafter referred to as "chopping stop phase width") θw OFF , using the chopping stop phase width θw OFF Adjust DC voltage command Vdc * , to obtain the same effect.

[0147] Therefore, the configurations of the rectifier circuit device and the control device according to Embodiment 2 of the present invention are similar to those described in Embodiment 1 above. figure 1 and Figure 2A Structures substantially the same as those in Embodiment 2 will be described u...

Embodiment approach 3

[0170] Hereinafter, a rectifier circuit device and a control device for the rectifier circuit device according to Embodiment 3 of the present invention will be described.

[0171] The rectifier circuit device according to Embodiment 3 of the present invention is obtained by simplifying the control method of the rectifier circuit device according to Embodiment 1 described above. The chopper phase width detector 212 in the rectifier circuit device according to Embodiment 3 detects a period in which the polarity (sign) of the AC voltage does not change but is fixed from 0 degrees or 180 degrees until the chopping stops (positive interval or negative interval) in the first half of the phase width θ1w ON (chopping phase width) for detection, use this phase width θ1w ON This chopping control is performed.

[0172] Therefore, the configurations of the rectifier circuit device and the control device according to Embodiment 3 of the present invention are similar to those described in...

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Abstract

The rectifier circuit device of the present invention comprises a control device that is configured to: control the chopping of a semiconductor switch (104) so that the waveform of a detected current becomes a target current waveform; control the amplitude of the target current waveform so that a detected DC voltage becomes a predetermined target DC voltage; and to control the target DC voltage so that either a chopping operation phase width that is a state in which chopping operation is performed by the semiconductor switch (104) or a chopping pause phase width that is a state in which chopping by the semiconductor switch (104) is paused becomes a predetermined phase width set in accordance with load conditions and a command from the outside.

Description

technical field [0001] The present invention relates to a control device and a rectifier circuit device for rectifying an alternating current from an alternating current power supply to a direct current, and particularly to a control device and a rectifying circuit device for rectifying an alternating current from a single-phase alternating current power source such as a household to form a substantially direct current rectifier circuit device. [0002] The rectifier circuit device of the present invention is applicable to a circuit device for driving a DC load, and a device for driving a motor as a load at a variable speed by reconverting the formed DC into an AC of any frequency by an inverter circuit. The rectifier circuit device of the present invention can be applied, for example, to a device that uses a compressor to compress a refrigerant to constitute a heat pump, thereby performing cooling, heating (heating) or freezing of food, etc. High-order harmonic components an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/12
CPCH02M1/4225H02M7/46H02M1/12H02M1/0085H02M1/4208Y02B70/10
Inventor 吉田泉京极章弘土山吉朗川崎智广戴鑫徽
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD