TH21609B - Power conversion equipment and air conditioners that use the same - Google Patents

Abstract

DC60 This invention provides power conversion equipment that can power the power factor of the supply. Power supplies are improved and the harmonic components of the power supply are more closely matched with or closer to the IEC standard, and the air conditioners use the same. Equipment for converting power consists of a conversion episode Conjugate for rectifying and voltage smoothing. AC that is fed from the supply AC power and AC voltage inverse to DC voltage. The inverse episode for DC voltage inversion. It is prepared by converting to AC voltage and protecting AC voltage to load reactor that has been connected in series to the power side of the conversion episode. Booster for Short circuit to a forced AC power source via a reactor And regulator for adjustment Set the short-circuit conductivity by booster to maximize the power factor of the AC power supply. In accordance with one or more differences between the voltage of the power source, AC, the inductance of the reactor. The cycle arrangement of the conversion episode And an air conditioner input power drives the compressor for forming a cooling cycle using power conversion equipment The invention provides power conversion equipment that can power the power factor of the supply. Power supplies are improved and the harmonic components of the power supply are more closely matched with or closer to the IEC standard, and the air conditioners use the same. Equipment for converting power consists of a conversion episode Conjugate for rectification and voltage smoothing. AC that is fed from the supply AC power and AC voltage inverse to DC voltage. The inverse episode for DC voltage inversion. It is prepared by converting to AC voltage and protecting the AC voltage to the load reactor that is connected in series with the power side of the conversion episode. Booster for Short circuit to a forced AC power source via a reactor And regulator for adjustment Set the short-circuit conductivity by booster to maximize the power factor of the AC power supply. In accordance with one or more differences between the voltage of the power source, AC, the inductance of the reactor. The cycle arrangement of the conversion episode And power input. Air conditioner drives the compressor for forming a cooling cycle by using power conversion equipment

Claims (2)

1. Unique power conversion equipment consisting of Conversion for rectification And thus the AC voltage that has been entered From a horizontal and brushed AC power source to the inverse DC voltage for voltage conversion. Electrical DC prepared By converting, at the time converting to AC voltage and feeding the AC voltage to the load. Serial-connected reactor These reactors have an inductance of 4 to 20 mH, a booster for forced short-circuiting of the AC power supply via Such reactors and controls for short-circuit lead time control. Of the AC power supply at Was fed by such booster within a 1.5 to 3.5 msec size range to make the power factor 2. The power conversion equipment corresponding to Clause 1 is unique. When the AC power supply is in a 100V class, the inductance of the reactor is 4 to 8 mH. The conversion consists of a double voltage doubling circuit / rectifier and a boost capacitor. At double the voltage, at capacities 600 to 1000 mF and input power not greater than 2,000W, the regulator controls the AC power short-circuit conduction time within a 1.5 to 3.5 msec channel. Powers corresponding to claim 1, which are unique. When the AC power source is in the 200 V class, the inductance of the reactor is 8 to 20 mH at the conversion, consisting of a full-wave rectifier and a smoothing capacitor with a capacitance of 1,400 to 1,800. Mu F and input power not more than 2,000W, the regulator controls time. Conducted short-circuit AC power supplies within a size range of 1.5 to 3.5 msec. 4. Power conversion equipment complying with claim 1, which is unique. Where the AC power supply is in a 200V or 230V class and an input power of 2,000 to 4,000 W, the reactor has an inductance of 14 to 20 mH. 5. Power conversion equipment corresponding to claim 4. Characteristic The aforementioned reactor has an inductance of 16 mH and a regulator mentioned above. The AC power short-circuit conductivity time is controlled within a 2.0 to 2.5 msec range for 2,000W input power within a 3.0 to 3.5 msec range for 4,000W input power, and is the specific time obtained by estimating in Linear range of short-cut conductivity time Circuit for intermediate input power sizes of 2,000W to 4,000W 6. Power conversion equipment corresponding to claim No. 1, which is unique. With the aforementioned reactor consisted of a reactor A lot of shapes Inductance and at least one natural frequency are significant to obtain inductance. A previously predetermined synthesis when it is connected in series. 7. Power conversion equipment corresponding to claim 6, which is unique. When the AC power supply is in the 200V class and the input power is 2000W to 4,000W, many of the aforementioned reactors have a synthetic inductance of 14 to 20 mH. Clause 6, which is unique By the reactants mentioned above It consists of the first and second reactor with inductance and Significantly equal natural frequency The first reactor mentioned above Has been connected with a line One power source is for the conversion connection to the aforementioned AC power supplies and reactors. Has been connected to another power supply route. For the connection of the aforementioned conversion to AC power supply 9. Power conversion equipment corresponding to claim 7, which is unique. The aforementioned reactor consists of the first and the second reactor having the same inductance and natural frequency significantly. The first reactor mentioned above Get connected with One power source path for the aforementioned conversion connection to the AC power supply And the second reactor mentioned above has been connected to the source path. Another power path for the aforementioned conversion connection to the AC 1 power supply. 0. Converting equipment corresponding to any of the claims 1 to 9 of its characteristics. After the aforementioned boosters short-circuited the AC power supply for a time. As has been Predetermined The aforementioned boosters short-circuited the AC power supply. It is again a shorter time than the time that was previously assigned. 1 1. The air conditioner is characterized by driving the compressor for formation. Cooling cycle Using the aforementioned power conversion equipment specified in Any one of Claims 1 to Clause 9 1 2. Air conditioners in accordance with Clause 11 that are characterized by Compressor stops after short-circuit conduction operation. Of the booster has been stopped in the STOP operation 1 3. The air conditioner in accordance with claim No. 11 is characterized by Air conditioners mentioned above consist of Current sensing path for current measurement The input is fed from an AC power source. The above regulator reduces the frequency of the supply. Down power for driving the compressor When the measured input current By measuring device The aforementioned current is greater than the previously set limit. And the range in which the frequency was received Stabilization Using the limit as the upper limit is set on the less current side. Such limit 1 4. Air conditioners in accordance with Clause 12 that are characterized by Air conditioners mentioned above and assembled. Current sensing path for current measurement The input is fed from an AC power source. The above regulator reduces the frequency of the supply. Down power for driving the compressor When the input current being measured by Measurement path The aforementioned current is greater than the previously set limit. And the range in which the frequency was received Stabilization Using the limit value as the upper limit value is set on the side with less current than the value. 1 5. Air conditioners in accordance with Clause 13 that are unique by value The lower limit of the range in which the frequency is fixed. To serve as a starting point And cancel the fixed frequency control 1 6. Air conditioners corresponding to Clause 14 that are characterized by The lower limit of the range in which the frequency is fixed. To serve as a starting point And cancel the constant frequency control 1 7. Air conditioners that are unique By driving the compressor for forming a cooling cycle By using the power conversion equipment specified in Clause 10 1 8. Air conditioners in accordance with claim 17 unique, whereby the compressor will stop after the short-circuit conduction of the booster at The above has stopped. In operation, stop 1 9. Air conditioners in accordance with Clause 17 that are characterized by Air conditioners mentioned above consist of Current sensing path for current measurement The input is fed from an AC power source. The aforementioned regulator reduces the frequency of the source. Power down for driving the compressor When the input current measured by the aforementioned current sensing path exceeds the previously set limit. And the range in which the frequency Get fixed Using the limit value as the upper limit value is set on the side with less current than the value. 2 0. Air conditioning in accordance with Clause 18 that is unique by Air conditioners mentioned above consist of Current sensing path for current measurement The input is fed from an AC power source. The aforementioned regulator will reduce the frequency of the power supply for driving the compressor when the input current measured by the aforesaid current sensing path exceeds the previously set limit. And the range in which the frequency Get fixed Using the limit value as the upper limit value is set on the side with less current than the value. Limit it to 2 1.Air conditioners in accordance with claim 19 that are characterized by value The lower limit of the range in which the frequency is fixed. To serve as a starting point And cancel the constant frequency control 2 2. Air conditioners in accordance with Clause 20 that are unique by value The lower limit of the range in which the frequency is fixed. To serve as a starting point And cancel the constant frequency control