Compressor driving apparatus
A driving device and compressor technology, applied to machines/engines, output power conversion devices, refrigerators, etc., can solve problems such as distortion of the output voltage waveform of the inverter 1, difficult standardization of compressor drive components, and low work efficiency.
Inactive Publication Date: 2003-02-19
PANASONIC CORP
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Problems solved by technology
However, there is a problem that the signal output from the drive signal forming circuit 6 has a relatively high speed, which is delayed due to the influence of the isolation circuit 7, thereby distorting the waveform of the output voltage of the inverter 1
[0005] Moreover, the data of the drive signal forming circuit 6 also needs to be prepared in advance for the compressor 8 of each specification, so it is difficult to standardize the compressor drive components including the drive signal forming circuit 6, the frequency converter drive circuit 2 and the frequency converter 1
[0006] According to the above-mentioned prior art, in the control system of the frequency converter type air conditioner, the compressor drive signal forming part and the compressor drive part for driving the compressor are installed separately, and the disadvantage of existence is that due to the imprecise operation of the compressor drive power supply, (because Distortion of power supply voltage waveform) leads to low work efficiency and cannot be standardized
Method used
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Embodiment Construction
[0024] figure 2 is a block diagram of an embodiment of the compressor drive of the present invention. The compressor driving device embodiment includes: frequency converter 11, frequency converter driving circuit 12, central processing unit (CPU) 13, power supply circuit 14, memory circuit 15, relay driving circuit 16, capacitor 18, high voltage direct current power supply (HV-DC power supply) 19, an operation control circuit 20, a resistor 21 for suppressing inrush current, and a relay 22.
[0025] The modular unit 17 includes an inverter 11 , an inverter drive circuit 12 , a CPU 13 , a power supply circuit 14 , a memory circuit 15 and a relay drive circuit 16 . Other circuits are mounted outside the modular unit 17 . figure 2 Also shown is a compressor 24 which is driven by the commercial power supply 23 and frequency converter 11 . The capacitor 18 is connected between the negative terminal of the HV-DC power supply 19 of the modular unit 17 and the ground.
[0026] A c...
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A compressor driving apparatus comprises a module including a power supply, an inverter for driving a compressor, an inverter driver for driving the inverter, a CPU for generating a signal to be used for driving the inverter and having a function for communicating with outside, a storage circuit for storing data which is alterable from an external device, and a relay driver for driving an external relay. The inverter and other circuit components are disposed within the module such that they are thermally separate such that an inverter driving signal from the CPU is transferred accurately to the inverter and that a power supply having an output voltage with low distortion is realized, thereby improving the operating efficiency of the compressor. Because the storage circuit and the power supply circuit are built-in, standardization of the compressor driving apparatus is easily realized.
Description
technical field [0001] The invention relates to compressor drive control technology used in air conditioners and other devices. Background technique [0002] In recent years, air conditioners with frequency converters (inverters) have been widely used, and people are strongly looking forward to their miniaturization, performance improvement, cost reduction and reliability improvement. [0003] Fig. 1 is a block diagram of a conventional compressor drive. In FIG. 1 , a module 3 includes a frequency converter 1 and a frequency converter driving circuit 2 . The low-voltage DC power supply circuit 5 converts the high-voltage DC power from the high-voltage DC power supply 4 (“HV-DC power supply”) into low-voltage DC power for the inverter drive circuit 2 . The drive signal forming circuit 6 for the frequency converter 1 is connected to the frequency converter drive circuit 2 through the isolation circuit 7 . Circuits 4 to 7 are all arranged outside the module 3 . The compress...
Claims
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IPC IPC(8): F04B49/06F04B49/10F04B49/20F25B49/02H02M7/00H02P27/06
CPCH02M7/003Y02B30/741F04B49/065F04B49/20H02P27/06F04B2203/0209F25B2600/021F25B49/025Y02B30/70
Inventor 三浦賢一郎松井敬三所谷良裕
Owner PANASONIC CORP