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A Frequency Conversion Circuit with Interleaved Mode and Its Deviation Suppression Method

A technology of frequency conversion circuit and interleaving mode, which is applied in the direction of converting AC power input to AC power output, electrical components, and adjusting electrical variables, etc., to achieve the effects of improving noise, voltage stability, and reducing noise and vibration

Active Publication Date: 2019-04-30
SHANGHAI MITSUBISHI ELECTRIC&SHANGLING AIR CONDITIONER & ELECTRIC APPLIANCE CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a frequency conversion circuit with an interleaved mode and a method for suppressing deviation thereof. By adjusting the conduction time of an insulated gate bipolar transistor, the bus voltage ripple caused by the difference in inductance of the reactor is effectively reduced, so that Bus voltage V DC The waveform is uniform and smooth, which ensures the stability of the voltage input to the compressor, thereby reducing the noise and vibration of the compressor, and the formed V DC It becomes smoother, the voltage is more stable, and the compressor noise, vibration problems and harmonic current problems are effectively improved

Method used

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  • A Frequency Conversion Circuit with Interleaved Mode and Its Deviation Suppression Method
  • A Frequency Conversion Circuit with Interleaved Mode and Its Deviation Suppression Method
  • A Frequency Conversion Circuit with Interleaved Mode and Its Deviation Suppression Method

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Embodiment Construction

[0048] based on the following Figure 4 ~ Figure 9 , specifically describe the preferred embodiment of the present invention.

[0049] Such as Figure 4 As shown, the present invention provides a frequency conversion circuit with an interleaved mode, comprising:

[0050] Power U;

[0051] a diode rectifier bridge DB, which is electrically connected to the power supply U, and is used to rectify the alternating current into direct current;

[0052] A first step-up chopper circuit comprising a first reactor L 1 , the first diode D 1 and the first insulated gate bipolar transistor (IGBT) Q 1 , the first reactor L 1 One end is electrically connected to the first output end a of the diode rectifier bridge DB, and the other end is electrically connected to the first diode D 1 positive terminal of the first IGBT Q 1 The collector is electrically connected to the first diode D 1 The positive end of the emitter is electrically connected to the second output end b of the diode r...

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Abstract

A frequency conversion circuit with an interleaving mode and a method for suppressing deviation thereof, by changing the bus voltage V DC After comparing the Fourier calculation value with the standard value, the conduction time of the IGBT tube is adjusted, which effectively reduces the bus voltage ripple caused by the inductance difference of the reactor, so that the bus voltage V DC The waveform of the compressor is uniform and smooth, which ensures the stability of the voltage input to the compressor, thereby reducing the noise and vibration of the compressor, and effectively improving the compressor noise, vibration and harmonic current problems.

Description

technical field [0001] The invention relates to a frequency conversion circuit with an interleaved mode and a deviation suppression method thereof. Background technique [0002] In the inverter control loop of inverter air conditioners, there is a FULL PAM control method called interleaved mode. Such as figure 1 As shown, the circuit of this control mode includes a diode rectifier bridge DB, which is used to rectify AC power into DC power, and the first reactor L 1 , the first diode D 1 and the first IGBT Q 1 Form the first step-up chopper circuit, the second reactor L 2 , the second diode D 2 and a second IGBT Q 2 The second step-up chopper circuit is formed, the reactor is used to improve the power factor, the diode is used to rectify the alternating current to direct current to make the waveform smoother, the insulated gate bipolar transistor acts as a non-contact switch, and the first insulated gate bipolar Pole Transistor Q 1 and a second IGBT Q 2 Alternate con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M5/458H02M3/158H02M1/12H02M1/14
CPCH02M1/12H02M1/14H02M3/1584H02M5/458H02M1/0038H02M3/1586
Inventor 张旻谷藤仁
Owner SHANGHAI MITSUBISHI ELECTRIC&SHANGLING AIR CONDITIONER & ELECTRIC APPLIANCE CO LTD
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