WO2010064490A1 - 電源装置 - Google Patents
電源装置 Download PDFInfo
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- WO2010064490A1 WO2010064490A1 PCT/JP2009/067726 JP2009067726W WO2010064490A1 WO 2010064490 A1 WO2010064490 A1 WO 2010064490A1 JP 2009067726 W JP2009067726 W JP 2009067726W WO 2010064490 A1 WO2010064490 A1 WO 2010064490A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Definitions
- the present invention relates to a power supply device, and more particularly to a power supply device including an active filter.
- an AC voltage from a commercial power source is rectified by a rectifier circuit such as a diode bridge, and smoothed by a smoothing circuit such as a capacitor to generate a DC voltage.
- a rectifier circuit such as a diode bridge
- a smoothing circuit such as a capacitor
- an active filter is provided between the rectifier circuit and the smoothing circuit, and the waveform and phase of the input current and the input voltage are matched.
- Patent Documents 1 and 2 JP-A-8-33392 and JP-A-8-182329
- the power supply device using an active filter has a problem that power loss increases when the input AC voltage is low.
- the difference between the input voltage and the output voltage of the active filter is made constant. There is a method (for example, refer to JP 2006-20402 A (Patent Document 3)).
- Patent Document 3 that solves the problems of Patent Documents 1 and 2, since the switching frequency is higher than that of a power factor improvement circuit (such as a PAM control circuit) other than the active filter, the level of the noise terminal voltage is high. was there.
- a power factor improvement circuit such as a PAM control circuit
- Patent Document 4 since the target voltage is lowered according to the temperature rise of the switching element, it is considered that the noise terminal voltage level is suppressed when the temperature of the switching element is high, but when the temperature of the switching element is low Has a problem that the noise terminal voltage is high.
- Patent Documents 1 to 4 Furthermore, with the technologies disclosed in Patent Documents 1 to 4, it is necessary to add a further hardware configuration to solve these problems, resulting in an increase in the size of the apparatus.
- a main object of the present invention is to provide a small-sized power supply device with a low noise terminal voltage level.
- a power supply device includes a rectifier circuit that rectifies a first AC voltage, an active filter that is provided at the next stage of the rectifier circuit, and a smoothing circuit that generates a DC voltage by smoothing an output voltage of the active filter. And an inverter for converting a DC voltage into a second AC voltage.
- the active filter includes a reactor whose one terminal receives the output voltage of the rectifier circuit, a diode whose anode is connected to the other terminal of the reactor, and whose cathode is connected to the smoothing circuit, and between the other terminal of the reactor and the reference voltage line. And a switching element connected to the.
- the power supply device further detects the input current, input voltage, and output voltage of the active filter, generates a target voltage based on the input current, the input current and the input voltage are in phase, and the output of the active filter
- a microcomputer for controlling on / off of the switching element so that the voltage matches the target voltage is provided.
- the microcomputer reduces the target voltage in response to an increase in input current.
- a temperature sensor for detecting the temperature of the switching element is further provided, and the microcomputer generates a target voltage based on the temperature detected by the temperature sensor and the input current.
- the microcomputer decreases the target voltage in response to an increase in the input current and decreases the target voltage in response to an increase in the temperature detected by the temperature sensor.
- the input current, the input voltage, and the output voltage of the active filter are detected, a target voltage is generated based on the input current, the phase of the input current and the input voltage is matched, and the output voltage is
- a microcomputer for controlling on / off of the switching element so as to coincide with the target voltage. Therefore, for example, the level of the noise terminal voltage can be lowered by lowering the target voltage in response to an increase in the input current.
- the active filter is controlled by the microcomputer, the size of the apparatus can be reduced.
- FIG. 6 It is a block diagram which shows the structure of the power supply device by Embodiment 1 of this invention. It is a figure which shows the production
- FIG. 1 is a block diagram showing a configuration of a power supply device according to Embodiment 1 of the present invention.
- the power supply device includes a rectifier circuit 2, voltage dividing resistors 7 and 15, a current detection resistor 8, an amplifier 9, an active filter 10, a smoothing capacitor 14, an inverter 16, and a microcomputer 18.
- the rectifier circuit 2 includes four diodes 3 to 6 that are bridge-connected, and full-wave rectifies the AC voltage from the AC power source 1. An AC voltage is applied between the anodes of the diodes 3 and 4.
- the cathodes of the diodes 3 and 4 are both connected to the positive output node 2a, the cathodes of the diodes 5 and 6 are connected to the anodes of the diodes 3 and 4, respectively, and the anodes of the diodes 5 and 6 are both connected to the negative output node 2b. Is done.
- the voltage dividing resistor 7 is connected between the positive-side output node 2a of the rectifier circuit 2 and the reference voltage line, and divides the output voltage of the rectifier circuit 2, that is, the input voltage Vin of the active filter 10, to reduce the input voltage Vin.
- a signal shown is generated and given to the microcomputer 18.
- the current detection resistor 8 is connected between the negative side input node 16b of the inverter 16 and the negative side output node 2b of the rectifier circuit 2, and outputs a signal indicating the input current Iin of the active filter 10.
- the amplifier 9 amplifies the output signal of the current detection resistor 8 and supplies it to the microcomputer 18.
- the negative input node 16b of the inverter 16 is connected to a reference voltage line.
- the active filter 10 includes a reactor 11, a diode 12, and an IGBT (Insulated Gate Bipolar Transistor) 13.
- One terminal of the reactor 11 is connected to the positive output node 2 a of the rectifier circuit 2.
- the anode of diode 12 is connected to the other terminal of reactor 11, and its cathode is connected to positive side input node 16 a of inverter 16.
- the collector of IGBT 13 is connected to the other terminal of reactor 11, its emitter is connected to a reference voltage line, and its gate receives control signal ⁇ C from microcomputer 18.
- the positive electrode of the smoothing capacitor 14 is connected to the cathode of the diode 12, and the negative electrode thereof is connected to the reference voltage line.
- the smoothing capacitor 14 smoothes the output voltage Vo of the active filter 10 to generate a DC voltage.
- the voltage dividing resistor 15 is connected in parallel to the smoothing capacitor 14, divides the output voltage Vo of the active filter 10, generates a signal indicating the output voltage Vo, and supplies the signal to the microcomputer 18.
- the inverter 16 converts the output voltage Vo of the active filter 10 into a three-phase AC voltage and applies the three-phase AC voltage to the AC motor 17.
- the microcomputer 18 controls the inverter 16 based on the DC current signal from the inverter 16 and the motor position signal from the motor 17. Further, the microcomputer 18 performs on / off control of the IGBT 13 based on the input voltage Vin, the input current Iin, and the output voltage Vo, and makes the power factor 1 by matching the waveforms and phases of the input voltage Vin and the input current Iin. At the same time, the output voltage Vo is matched with the target voltage Vt. Further, the microcomputer 18 decreases the target voltage Vt according to the increase of the input current Iin.
- the microcomputer 18 includes voltage detection units 20 and 22, a current detection unit 21, a target voltage setting unit 23, and a signal generation unit 24.
- the voltage detector 20 generates a digital signal indicating the waveform, phase, amplitude, and the like of the input voltage Vin of the active filter 10 based on the output signal of the voltage dividing resistor 7.
- the current detection unit 21 generates a digital signal indicating the waveform, phase, amplitude, and the like of the input current Iin of the active filter 10 based on the output signal of the amplifier 9.
- the voltage detector 22 generates a digital signal indicating the level of the output voltage Vo of the active filter 10 based on the output signal of the voltage dividing resistor 15.
- the target voltage setting unit 23 generates the target voltage Vt based on the output signals of the voltage detection unit 20 and the current detection unit 21.
- the target voltage Vt decreases as the input current Iin of the active filter 10 increases.
- the signal generator 24 generates a control signal ⁇ C based on the input voltage Vin, the input current Iin, and the output voltage Vo, controls the IGBT 13 on / off, and matches the waveforms and phases of the input voltage Vin and the input current Iin.
- the power factor is brought close to 1, and the output voltage Vo is matched with the target voltage Vt.
- the input voltage Vin and the output voltage Vo are controlled to have a certain relationship.
- the target voltage Vt is lowered as the input current Iin increases so that the power loss does not change even when the input voltage Vin decreases.
- the on / off cycle of the IGBT 13 by the control signal ⁇ C is determined by an arbitrary set value stored in the microcomputer 18.
- an arbitrary set value can be changed by storing an arbitrary set value using a flash memory capable of rewriting data. Due to noise and noise terminal voltage problems, the switching period of the active filter 10 is generally set to 15 kHz to 20 kHz.
- control signal ⁇ C is generated using the zero cross detection signal ⁇ ZC generated by the microcomputer 18 based on the input voltage Vac as shown in FIG. 2 as a trigger.
- the voltage Vac is obtained by full-wave rectifying a sinusoidal AC voltage.
- the microcomputer 18 samples the input voltage Vac, and raises the zero cross detection signal ⁇ ZC to the “H” level when the input voltage Vac falls below a preset threshold voltage Vth (times t0, t2, t4)
- the zero cross detection signal ⁇ ZC is lowered to the “L” level (time t1, t3, t5), and the zero cross detection signal ⁇ ZC is generated by software.
- a zero cross detection signal ⁇ ZC is generated by using a circuit combining a resistance element, a diode, and a photocoupler, or hardware such as a comparator, and the signal ⁇ ZC is input to the microcomputer 18 as an output trigger of the control signal ⁇ C. Also good.
- the microcomputer 18 adjusts the target voltage Vt according to the input current Iin. Since the noise terminal voltage increases as the current consumption increases, the input current Iin detected for matching the phase is also used as a variable for adjusting the target voltage Vt. The level of the noise terminal voltage is lowered by lowering the target voltage Vt according to the increase of the input current Iin.
- FIGS. 3A to 3D are diagrams illustrating the relationship between the input current Iin and the target voltage Vt.
- the target voltage Vt is lowered in response to the input current Iin exceeding the threshold current.
- the comparator has a hysteresis characteristic or prohibits switching of the target voltage Vt for a predetermined mask time so that the target voltage Vt does not cause a hunting phenomenon when the input current Iin becomes a substantially threshold current. Good.
- the target voltage Vt is decreased in proportion to the level increase of the input current Iin, or the target is increased according to the level increase of the input current Iin as shown in FIG.
- the voltage Vt is decreased stepwise, or as shown in FIG. 3D, the rate of decrease of the target voltage Vt is increased as the level of the input current Iin is increased, and the target voltage Vt is decreased by a quadratic function. You may let them. Further, a control method in which upper limit compensation and lower limit compensation are provided in a linear relationship as shown in FIG. 3B and a combination of FIGS. 3A and 3B may be adopted.
- the target voltage Vt can be lowered as the input current Iin increases.
- the output voltage at the control limit is the lowest DC voltage that can be increased to an arbitrary compressor speed.
- the output voltage Vo when there is no boosting by the active filter 10 is experimentally obtained, and similarly, the boosted voltage value X (V) corresponding to the current phase being matched with the voltage phase is obtained experimentally.
- the target voltage Vt obtained by adding about X (V) to the output voltage Vo is stored in the microcomputer 18 in advance, and the control is performed automatically by detecting the balance between the input current Iin and the input voltage Vin. There is also a method of performing control. When this balance is “1”, the power factor is almost “1”.
- the input current Iin and the input voltage Vin are sampled, and the waveform of the input current Iin is divided into two around the peak value Vp of the input voltage Vin.
- the integrated value of the first half of the input current Iin is A
- the integrated value of the second half is B.
- a / B or B / A is less than a set threshold balance (for example, 0.99).
- the target voltage Vt is lowered until the input voltage Vin at that time is added Y (V) as the initial value Vini of the target voltage Vt.
- the microcomputer 18 performs the basic operation of detecting the input voltage Vin, the input current Iin, and the output voltage Vo and matching the phases of the input voltage Vin and the input current Iin, the power can be reduced while reducing the hardware configuration. The rate can be improved and the harmonic current can be suppressed.
- the noise terminal voltage level can be adjusted without adding additional input information. Reduction is possible.
- FIG. 5 is a block diagram showing a configuration of a power supply device according to Embodiment 2 of the present invention, which is compared with FIG. In FIG. 5, this power supply device differs from the power supply device in FIG. 1 in that a temperature sensor 30 is provided in the vicinity of the IGBT 13 and a temperature detection unit 31 is provided in the microcomputer 18.
- the temperature sensor 30 detects the temperature Ta of the IGBT 13 and outputs a signal having a level corresponding to the detected temperature.
- the temperature detection unit 31 generates a digital signal indicating the temperature Ta of the IGBT 13 based on the output signal of the temperature sensor 30 and gives the signal to the target voltage setting unit 23.
- the target voltage setting unit 23 decreases the target voltage Vt according to the increase in the input current Iin, and decreases the target voltage Vt according to the increase in the temperature Ta of the IGBT 13.
- the temperature sensor 30 may be provided in the vicinity of the IGBT 13 to directly detect the temperature Ta of the IGBT 13, or the temperature sensor 30 may be provided on a heat radiating plate for radiating the heat of the IGBT 13 to indirectly detect the temperature Ta of the IGBT 13. It may be detected.
- the temperature of the IGBT 13 increases as the input current Iin increases and the current flowing through the IGBT 13 increases. If the temperature rise of the IGBT 13 can be suppressed, the risk of high-temperature destruction of the IGBT 13 is reduced and the safety is increased while reducing the noise terminal voltage level by combining with the control of the target voltage Vt based on the input current Iin. Moreover, it becomes possible to employ
- FIG. 6A to 6D are diagrams illustrating the relationship between the temperature Ta of the IGBT 13 and the target voltage Vt.
- the target voltage Vt is lowered by Z (V) in response to the temperature Ta exceeding the threshold temperature.
- the target voltage Vt is decreased in proportion to the increase in the level of the temperature Ta, or as shown in FIG. 6C, the target voltage is increased according to the increase in the level of the input current Iin. Vt may be decreased stepwise.
- the amount of decrease in the target voltage Vt may be increased as the temperature increases.
- FIG. 6A to 6D are diagrams illustrating the relationship between the temperature Ta of the IGBT 13 and the target voltage Vt.
- the target voltage Vt may be decreased in a quadratic function by increasing the decrease rate of the target voltage Vt as the temperature Ta increases. Further, a control method in which upper limit compensation and lower limit compensation are provided in a linear relationship as shown in FIG. 6B and a combination of FIGS. 6A and 6B may be adopted.
- the input current Iin as described in the first embodiment is used.
- the control based on the balance value is not performed.
- FIG. 7 is a flowchart showing the operation of the microcomputer 18.
- the target voltage Vt is lowered, and when the balance value A / B of the input current Iin becomes smaller than the set value PF, the target voltage Vt is reached. Only Y (V) is added, and when the temperature Ta of the IGBT 13 exceeds the threshold temperature Tth, the target voltage Vt is lowered.
- the microcomputer 18 always monitors the input current Iin while the power supply device is driven, and determines whether or not the input current Iin exceeds the threshold current Ith in step S1. If Iin> Ith, the current flag is set in step S2 and the process proceeds to step S4. If Iin> Ith is not satisfied, the current flag is cleared in step S3 and the process proceeds to step S7.
- step S4 it is determined whether or not the balance value A / B of the input current Iin exceeds the set value PF.
- the integrated values A and B of the input current Iin are stored in the microcomputer 18. As the integration values A and B, only the latest value may be used, or an average value of a plurality of integration values A and B may be used.
- step S7 the process proceeds to step S7 with a voltage Vt ⁇ V_1 obtained by subtracting a predetermined voltage V_1 from the current target voltage Vt in step S5 as a new target voltage Vt. If A / B> PF is not satisfied, the process proceeds to step S7 with a voltage Vt + V_2 obtained by adding a predetermined voltage V_2 to the current target voltage Vt in step S6 as a new target voltage Vt. At this time, V_1 and V_2 may be the same value.
- step S7 it is determined whether or not the temperature Ta of the IGBT 13 exceeds the threshold temperature Tth. If Ta> Tth, the temperature flag is set in step S8 and the process proceeds to step S10. If Ta> Tth is not satisfied, the temperature flag is cleared in step S9 and the process proceeds to step S11. In step S10, the process proceeds to step S11 with the voltage Vt ⁇ V_3 obtained by subtracting a predetermined voltage V_3 from the current target voltage Vt as a new target voltage Vt.
- step S11 it is determined whether or not both the current flag and the temperature flag are cleared. If both flags are cleared, the target voltage Vt is reset to the initial value Vini in step S12, and the two If at least one of the flags is set, the process returns to step S1.
- the suppression of the noise terminal voltage level and the suppression of the temperature rise of the IGBT 13 are realized at the same time.
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Abstract
Description
図1は、この発明の実施の形態1による電源装置の構成を示すブロック図である。図1において、この電源装置は、整流回路2、分圧抵抗器7,15、電流検出抵抗器8、アンプ9、アクティブフィルタ10、平滑コンデンサ14、インバータ16、およびマイクロコンピュータ18を備える。
図5は、この発明の実施の形態2による電源装置の構成を示すブロック図であって、図1と対比される図である。図5において、この電源装置が図1の電源装置と異なる点は、IGBT13の近傍に温度センサ30が設けられ、マイクロコンピュータ18に温度検出部31が設けられている点である。
Claims (4)
- 第1の交流電圧を整流する整流回路(2)と、
前記整流回路(2)の次段に設けられたアクティブフィルタ(10)と、
前記アクティブフィルタ(10)の出力電圧(Vo)を平滑化して直流電圧を生成する平滑回路(14)と、
前記直流電圧を第2の交流電圧に変換するインバータ(16)とを備え、
前記アクティブフィルタ(10)は、
一方端子が前記整流回路(2)の出力電圧を受けるリアクトル(11)と、
アノードが前記リアクトル(11)の他方端子に接続され、カソードが前記平滑回路(14)に接続されたダイオード(12)と、
前記リアクトル(11)の他方端子と基準電圧のラインとの間に接続されたスイッチング素子(13)とを含み、
さらに、前記アクティブフィルタ(10)の入力電流(Iin)、入力電圧(Vin)、および出力電圧(Vo)を検出し、前記入力電流(Iin)に基づいて目標電圧(Vt)を生成し、前記入力電流(Iin)と前記入力電圧(Vin)の位相が一致し、かつ前記アクティブフィルタの出力電圧(Vo)が前記目標電圧(Vt)に一致するように前記スイッチング素子(13)をオン/オフ制御するマイクロコンピュータ(18)を備える、電源装置。 - 前記マイクロコンピュータ(18)は、前記入力電流(Iin)が増大したことに応じて前記目標電圧(Vt)を低下させる、請求の範囲第1項に記載の電源装置。
- さらに、前記スイッチング素子(13)の温度(Ta)を検出する温度センサ(30)を備え、
前記マイクロコンピュータ(18)は、前記温度センサ(30)の検出温度(Ta)と前記入力電流(Iin)とに基づいて前記目標電圧(Vt)を生成する、請求の範囲第1項に記載の電源装置。 - 前記マイクロコンピュータ(18)は、前記入力電流(Iin)が増大したことに応じて前記目標電圧(Vt)を低下させるとともに、前記温度センサ(30)の検出温度(Ta)が上昇したことに応じて前記目標電圧(Vt)を低下させる、請求の範囲第3項に記載の電源装置。
Priority Applications (3)
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US13/128,909 US8416590B2 (en) | 2008-12-03 | 2009-10-13 | Power supply device |
EP09830258A EP2360828A1 (en) | 2008-12-03 | 2009-10-13 | Power supply device |
CN2009801472666A CN102224667A (zh) | 2008-12-03 | 2009-10-13 | 电源装置 |
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JP2008-308433 | 2008-12-03 | ||
JP2008308433A JP4487008B2 (ja) | 2008-12-03 | 2008-12-03 | 電源装置 |
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JP4487009B2 (ja) * | 2008-12-03 | 2010-06-23 | シャープ株式会社 | 電源装置 |
JP5924873B2 (ja) * | 2011-05-13 | 2016-05-25 | 三菱電機株式会社 | 空気調和装置用制御装置 |
WO2014034138A1 (ja) * | 2012-08-30 | 2014-03-06 | パナソニック株式会社 | 整流回路装置 |
DE112012007126T5 (de) * | 2012-11-13 | 2015-08-06 | Toyota Jidosha Kabushiki Kaisha | Aufwärtswandler-Steuerungsvorrichtung |
WO2014087706A1 (ja) * | 2012-12-06 | 2014-06-12 | 三菱重工業株式会社 | モータ駆動装置及び空気調和機並びにコンバータ装置の制御方法 |
JP5585643B2 (ja) * | 2012-12-14 | 2014-09-10 | ダイキン工業株式会社 | アクティブフィルタ制御装置 |
TW201427259A (zh) * | 2012-12-19 | 2014-07-01 | Chyng Hong Electronic Co Ltd | 交流電源供應器電源電路 |
JP6127860B2 (ja) * | 2013-09-18 | 2017-05-17 | 株式会社豊田自動織機 | 車載装置 |
JP6281573B2 (ja) * | 2013-10-21 | 2018-02-21 | 株式会社島津製作所 | パワーステアリング装置 |
JP2015104178A (ja) * | 2013-11-22 | 2015-06-04 | 日本電産テクノモータ株式会社 | モータ駆動装置 |
RU2551427C1 (ru) * | 2014-05-23 | 2015-05-27 | Открытое акционерное общество Научно-исследовательский и конструкторско-технологический институт подвижного состава (ОАО "ВНИКТИ") | Способ и устройство стабилизации трехфазного переменного напряжения |
JP6489689B2 (ja) * | 2015-06-17 | 2019-03-27 | 三菱重工サーマルシステムズ株式会社 | ゼロクロス点検出装置、電源装置、ゼロクロス点検出方法及びプログラム |
CN107070364B (zh) * | 2017-03-31 | 2019-08-30 | 广东美的制冷设备有限公司 | 空调器、电机驱动器及其的防过热控制方法和装置 |
JP6721097B2 (ja) * | 2018-09-27 | 2020-07-08 | ダイキン工業株式会社 | 直接形電力変換器、制御装置 |
JP7130024B2 (ja) * | 2020-11-12 | 2022-09-02 | 三菱電機株式会社 | 電力変換装置 |
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US6075328A (en) | 1996-10-18 | 2000-06-13 | Hitachi, Ltd. | PWM/PAM control mode switching type motor control apparatus, and motor drive and air-conditioner using the same |
US6906503B2 (en) * | 2002-01-25 | 2005-06-14 | Precor Incorporated | Power supply controller for exercise equipment drive motor |
US6756771B1 (en) * | 2003-06-20 | 2004-06-29 | Semiconductor Components Industries, L.L.C. | Power factor correction method with zero crossing detection and adjustable stored reference voltage |
US7012413B1 (en) * | 2003-08-01 | 2006-03-14 | Tyco Electronics Power Systems, Inc. | Controller for a power factor corrector and method of regulating the power factor corrector |
US7659673B2 (en) * | 2004-03-15 | 2010-02-09 | Philips Solid-State Lighting Solutions, Inc. | Methods and apparatus for providing a controllably variable power to a load |
US7456621B2 (en) * | 2005-05-06 | 2008-11-25 | Silicon Laboratories Inc. | Digital controller based power factor correction circuit |
JP6083466B2 (ja) * | 2013-04-03 | 2017-02-22 | 富士電機株式会社 | ガス分析計 |
-
2008
- 2008-12-03 JP JP2008308433A patent/JP4487008B2/ja not_active Expired - Fee Related
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2009
- 2009-10-13 WO PCT/JP2009/067726 patent/WO2010064490A1/ja active Application Filing
- 2009-10-13 CN CN2009801472666A patent/CN102224667A/zh active Pending
- 2009-10-13 US US13/128,909 patent/US8416590B2/en not_active Expired - Fee Related
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JPH0683466A (ja) * | 1992-09-02 | 1994-03-25 | Nippon Telegr & Teleph Corp <Ntt> | 電源装置 |
JPH0833392A (ja) | 1994-07-19 | 1996-02-02 | Sharp Corp | 空気調和機 |
JPH08182329A (ja) | 1994-12-22 | 1996-07-12 | Sharp Corp | インバータ装置を備えた空気調和機 |
JPH0970178A (ja) | 1995-08-30 | 1997-03-11 | Sharp Corp | 空気調和機 |
JPH10127083A (ja) * | 1996-10-18 | 1998-05-15 | Hitachi Ltd | Pwm/pam制御形モータ駆動装置及びそれを用いた空調機 |
JP2001095235A (ja) * | 1999-09-17 | 2001-04-06 | Seiko Epson Corp | 電源回路および電気光学装置 |
JP2006020402A (ja) | 2004-06-30 | 2006-01-19 | Mitsubishi Heavy Ind Ltd | インバータ、電源装置、及びコンプレッサ |
JP2008109723A (ja) * | 2006-10-23 | 2008-05-08 | Omron Corp | スイッチング電源装置 |
Also Published As
Publication number | Publication date |
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JP4487008B2 (ja) | 2010-06-23 |
EP2360828A1 (en) | 2011-08-24 |
JP2010136492A (ja) | 2010-06-17 |
CN102224667A (zh) | 2011-10-19 |
US8416590B2 (en) | 2013-04-09 |
US20110228573A1 (en) | 2011-09-22 |
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