WO2007113972A1 - Pwmインバータ装置 - Google Patents
Pwmインバータ装置 Download PDFInfo
- Publication number
- WO2007113972A1 WO2007113972A1 PCT/JP2007/054323 JP2007054323W WO2007113972A1 WO 2007113972 A1 WO2007113972 A1 WO 2007113972A1 JP 2007054323 W JP2007054323 W JP 2007054323W WO 2007113972 A1 WO2007113972 A1 WO 2007113972A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wave
- pwm
- signal
- frequency
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/539—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
- H02M7/5395—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency by pulse-width modulation
-
- 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
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- 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
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/08—Duration or width modulation ; Duty cycle modulation
Definitions
- the present invention relates to a PWM inverter device that controls an AC output voltage in cross current conversion.
- FIG. 7 is a configuration diagram of a PWM signal generation unit in the PWM inverter device showing the first prior art.
- 3 is a comparator.
- A is a signal wave
- b is a carrier wave
- PWM is a PWM signal.
- the PWM signal generator in the conventional PWM inverter device compares the signal wave a and the carrier wave b by the comparator 3 as shown in FIG. 7, and determines the output state based on the magnitude of the amplitude (for example, see Patent Document 1). ).
- FIG. 8 is a PWM signal waveform in the PWM signal generation unit of the first prior art.
- a is a signal wave
- b is a carrier wave
- t is time
- T is a period of carrier wave b
- PWM is a PWM signal.
- the PWM signal waveform in the first prior art will be described with reference to FIG.
- the PWM signal is 1 when the signal wave a is larger than the carrier wave b, and 0 otherwise, the PWM waveform is as shown in FIG.
- the amplitude of the carrier wave b is 1, the average value of the signal wave a and the PWM signal in one period T of the carrier wave b is approximately equal.
- FIG. 9 is a configuration diagram of a PWM signal generation unit in the PWM inverter device showing the second prior art.
- 3 is a comparator for comparing the signal wave and the carrier wave
- 4 is a triangular function calculation unit.
- A is the desired amplitude
- ⁇ is the desired phase
- al is the signal wave
- b is the carrier wave
- PWM is the PWM signal.
- FIG. 10 shows a PWM signal waveform in the PWM signal generation unit of the second prior art.
- a and al are signal waves
- b is a carrier wave
- t, tl and t2 are time
- T is the period of carrier b
- PWM is a PWM signal.
- the operation of the PWM signal generator in the second conventional PWM inverter device will be described below with reference to FIGS.
- the signal wave a is often generated using a trigonometric function from two data, usually the amplitude A and the phase ⁇ , when using vector control, for example.
- the equation of the signal wave al is (1).
- Equation (1) is executed in a certain control cycle.
- the signal wave al is quantized with a carrier period T. Then, the signal wave al becomes a waveform as shown in FIG. 10, and is compared by the comparator 3 using this.
- Digital control is used to generate the signal wave al from the two data ⁇ using the trigonometric function, the signal wave al and the carrier wave b are compared by the comparator 3, and the output state is determined by the magnitude of the amplitude of both. It was.
- Patent Document 1 JP-A 2000-102257 (Fig. 3)
- the PWM signal generated and output using the conventional technique becomes a signal delayed with respect to the signal wave a, and the problem that the amplitude A and the phase ⁇ are not correctly transmitted. is there. This is confirmed from time t in the arrow part shown in FIG.
- the phase advances from time t to ⁇ (t -t), but the signal is quantized with the carrier period T.
- the phase of the generated PWM waveform is the phase of 1 period T of the phase co t force at time t, which is the start of 1 period.
- ⁇ is the angular frequency of the signal wave a
- Equation (2) there is a problem that this phase error becomes large when the frequency of the carrier wave b is not sufficiently higher than the frequency of the signal wave a.
- the present invention has been made in view of such problems, and a PWM capable of eliminating a phase error when generating a PWM signal even when the frequency of the carrier wave is not sufficiently high with respect to the frequency of the signal wave.
- An object is to provide an inverter device.
- the invention according to claim 1 generates a PWM signal by comparing a cross-flow converter that converts a DC voltage into an AC voltage, a carrier wave, and a signal wave that is a command.
- a PWM signal generation unit that controls the AC voltage using the PWM signal, wherein the PWM signal generation unit calculates a phase delay of the PWM signal with respect to the signal wave due to digital control.
- a phase adjustment unit for advancing the phase is provided.
- the invention according to claim 2 is the PWM inverter device according to claim 1, wherein the carrier wave is a periodic waveform such as a triangular wave or a sawtooth wave synchronized with a control period for generating the signal wave. It is characterized by being.
- the PWM inverter device includes:
- control frequency for generating the signal wave is a specific multiple of the carrier wave frequency
- a phase corresponding to the half of the control period divided by the ratio of the control frequency to the carrier wave frequency is added to the signal wave to It is characterized by advancing the phase.
- a carrier frequency changing unit that changes the frequency of the carrier, and a carrier that is generated in accordance with the changed frequency
- the phase adjustment unit adds a phase component in accordance with a ratio of the carrier wave frequency and the control period to a desired phase in synchronization with a change in the frequency of the carrier wave.
- the carrier wave has a periodic waveform such as a triangular wave or a sawtooth wave
- the phase error in generating the PWM waveform can be eliminated.
- phase delay with respect to the desired signal wave of the M waveform can be eliminated.
- control frequency for generating a desired signal wave is a specific multiple of the carrier wave frequency, the phase error in generating the PWM waveform can be eliminated.
- phase delay of the PWM waveform with respect to the desired signal wave can be eliminated.
- FIG. 1 is a configuration diagram of a PWM signal generation unit in a PWM inverter device showing a first embodiment of the present invention.
- FIG. 2 is an explanatory diagram of a second embodiment of the present invention, and shows a PWM signal waveform when a sawtooth wave is applied as a carrier wave in the PWM signal generation unit
- FIG. 3 is an explanatory diagram of a third embodiment of the present invention, wherein the PWM signal waveform when the control frequency is doubled the carrier frequency in the PWM signal generation unit
- FIG. 4 is a block diagram of a PWM signal generator in a PWM inverter device showing a fourth embodiment of the present invention.
- FIG. 5 is an explanatory diagram of a fourth embodiment of the present invention, and shows the waveform of a signal wave when a carrier wave b2 whose carrier wave frequency is switched in the middle is used in the PWM signal generation unit of the present invention.
- FIG. 6 is a flowchart showing a processing procedure for generating a PWM signal in the PWM inverter device of the fourth embodiment of the present invention.
- FIG. 1 is a configuration diagram of a PWM signal generation unit in a PWM inverter device showing a first embodiment of the present invention.
- 1 is a cross current conversion unit
- 2 is a PWM signal generation unit
- 3 is a comparator for comparing a signal wave and a carrier wave
- 4 is a trigonometric function calculation unit
- 5 is a DC input
- 6 is an AC output
- 11 is a phase. It is an adjustment unit.
- A is the desired amplitude
- ⁇ is the desired phase
- ⁇ is the phase to advance the signal wave
- a2 is the signal wave
- b is the carrier wave
- PWM is the PWM signal.
- the PWM inverter device of this embodiment is provided with a phase adjustment unit 11 for advancing the phase by adding the phase delay ⁇ accompanying the digital control to the signal wave of the PWM signal to the signal wave. This is the point.
- the signal wave al is generated from two pieces of data of amplitude A and phase ⁇ by digital control using a trigonometric function in the trigonometric function calculation unit 4, and the period is executed in synchronization with the frequency of the carrier b. .
- phase ⁇ is expressed in terms of the angular frequency ⁇ and time t using the above equation (1), the equation is as follows.
- the feature of the PWM inverter device of the present embodiment is that the phase of the signal wave is advanced by phase ⁇ in order to eliminate the phase delay with respect to the signal wave of the PWM waveform when generating the PWM waveform.
- the digital control period shown in Fig. 10 is equal to the carrier wave period, so the previous phase error corresponds to equation (2), so the signal wave al in equation (3) is the signal wave in equation (4) below. It can be expressed as a2. That is, the phase adjustment unit 11 adds the phase corresponding to half of the control period for generating the signal wave to the signal wave to advance the phase of the signal wave, and the trigonometric function calculation unit 4 advances the amplitude to A. It can be seen that the signal wave a2 can be generated from the phase.
- the amplitude A needs to be the same as the amplitude of the carrier wave b.
- FIG. 2 is an explanatory diagram of a second embodiment of the present invention, and shows a PWM signal waveform when a sawtooth wave is applied as a carrier wave in the PWM signal generation unit.
- al is a signal wave
- bl is a carrier wave
- t is time
- PWM is a PWM signal. Since the configuration of this embodiment is the same as that of FIG. 1 showing the first embodiment, the description thereof is omitted.
- FIG. 1 showing the first embodiment, the case where the carrier wave b is a triangular wave is illustrated, but in this embodiment, Since a similar PWM waveform delay occurs even with a sawtooth carrier wave bl as shown in Fig. 2, if the waveform update period is synchronized with the carrier frequency as shown in Fig. 2 As shown in Equation (4), the phase error in generating the PWM waveform can be eliminated by advancing the phase of the signal wave.
- FIG. 3 is an explanatory diagram of the third embodiment of the present invention, and shows a PWM signal waveform when the control frequency is multiplied by 2 times the carrier frequency in the PWM signal generation unit.
- a and a 1 are signal waves
- b is a carrier wave
- t is time
- T is a period of the carrier wave b
- PWM is a PWM signal. Since the configuration of this embodiment is the same as that of FIG. 1 showing the first embodiment, the description thereof is omitted.
- the control period for generating the signal wave al is set to be equal to the carrier frequency, but this control frequency is twice or three times the carrier frequency as shown in FIG.
- phase error during PWM waveform generation can be eliminated in the same way even if it is multiplied by 1/2, or 1/2 or 1/3. If the control frequency is twice the carrier frequency, the phase delay of the PWM waveform is halved. If the ratio of the control frequency to the carrier frequency is B, the signal wave a 2 can be expressed as shown in Equation (5).
- ⁇ is a natural number of 1 or more or its inverse.
- FIG. 4 is a configuration diagram of a PWM signal generation unit in the PWM inverter device showing the fourth embodiment of the present invention.
- 12 is a carrier frequency changing unit
- 13 is a carrier generating unit.
- the same reference numerals as those in FIG. 1 denote the same components as those in FIG. 1, and description thereof will be omitted.
- FIG. 1 shows the first embodiment as follows.
- this embodiment includes a carrier wave frequency changing unit 12 that changes the frequency of a carrier wave and a carrier wave generating unit 13 that generates a carrier wave in accordance with the changed frequency in addition to the configuration shown in FIG.
- the phase adjustment unit 11 is configured to add a phase component that matches the ratio of the control period to a desired phase in synchronization with the change of the carrier frequency.
- FIG. 5 is an explanatory diagram of the fourth embodiment of the present invention, and shows the waveform of a signal wave when using a carrier wave b2 in which the frequency of the carrier wave is switched in the middle in the PWM signal generation unit. In Fig.
- a3 is the desired signal wave
- a4 is the signal wave with advanced phase
- b2 is the carrier wave
- T1 is the carrier wave period before the frequency change
- T2 is the carrier wave period after the frequency change
- t is the time
- Bl B2 is the ratio of the control frequency to the carrier frequency.
- the phase of the signal wave advances from time t when the carrier frequency switches.
- the phase ⁇ is adjusted according to the ratio of the control frequency to the carrier frequency, and the signal wave a2 is generated.
- the carrier frequency must be switched at the peak or valley of a triangular wave carrier at the same timing as the control cycle.
- FIG. 6 is a flowchart showing a processing procedure for generating a PWM signal in the PWM inverter device of the fourth embodiment of the present invention.
- step ST1 the carrier frequency changing unit 12 confirms the change in the frequency of the carrier b.
- step ST2 the phase updating unit 13 sets the phase ⁇ for advancing a desired signal wave to the carrier wave. Update according to the ratio of control frequency to frequency.
- step ST3 the trigonometric function operation unit 4 obtains the signal wave a2 using equation (5).
- step ST4 the comparator 3 compares the amplitudes of the signal wave a2 and the carrier wave b to generate a PWM signal.
- the PWM inverter device advances the phase of a desired signal wave from the carrier wave frequency, and therefore can cope with the change of the carrier wave frequency, and at the time of generating the PWM waveform.
- the phase delay that occurs can be eliminated.
- the present invention is applicable to any power conversion device using the PWM method.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07737870.1A EP2006990A4 (en) | 2006-04-06 | 2007-03-06 | Pwm inverter device |
| JP2008508468A JP4730435B2 (ja) | 2006-04-06 | 2007-03-06 | Pwmインバータ装置 |
| US12/295,926 US8189356B2 (en) | 2006-04-06 | 2007-03-06 | PWM inverter |
| CN2007800120783A CN101416374B (zh) | 2006-04-06 | 2007-03-06 | Pwm逆变器 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006105628 | 2006-04-06 | ||
| JP2006-105628 | 2006-04-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007113972A1 true WO2007113972A1 (ja) | 2007-10-11 |
Family
ID=38563244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/054323 Ceased WO2007113972A1 (ja) | 2006-04-06 | 2007-03-06 | Pwmインバータ装置 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8189356B2 (ja) |
| EP (1) | EP2006990A4 (ja) |
| JP (1) | JP4730435B2 (ja) |
| KR (1) | KR20080109826A (ja) |
| CN (1) | CN101416374B (ja) |
| TW (1) | TW200740098A (ja) |
| WO (1) | WO2007113972A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009118599A (ja) * | 2007-11-05 | 2009-05-28 | Yaskawa Electric Corp | Pwmインバータ装置 |
| JP4911241B1 (ja) * | 2010-11-16 | 2012-04-04 | ダイキン工業株式会社 | 電力変換装置 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401447B (zh) * | 2013-07-19 | 2015-09-16 | 东南大学 | 一种级联型pwm整流器的调制方法 |
| US9465379B2 (en) | 2013-08-06 | 2016-10-11 | Bedrock Automation Platforms Inc. | Methods for consolidating module types for industrial control systems |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000102257A (ja) | 1998-09-21 | 2000-04-07 | Yaskawa Electric Corp | インバータのpwmパルス発生方法および発生装置 |
| JP2001197725A (ja) * | 2000-01-07 | 2001-07-19 | Fuji Electric Co Ltd | Pwmパルスの発生方法 |
| WO2005034327A1 (ja) * | 2003-09-30 | 2005-04-14 | Mitsubishi Denki Kabushiki Kaisha | インバータ装置 |
| JP2006014449A (ja) * | 2004-06-24 | 2006-01-12 | Matsushita Electric Ind Co Ltd | Pwm回路およびpwm回路制御方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3245523B2 (ja) * | 1995-10-16 | 2002-01-15 | シャープ株式会社 | インバータ制御方法およびインバータ制御装置 |
| JP3812299B2 (ja) * | 2000-06-28 | 2006-08-23 | 日産自動車株式会社 | 電気自動車用モータ制御装置 |
| WO2003017489A1 (en) * | 2001-08-14 | 2003-02-27 | The Board Of Trustees Of The University Of Illinois | Systems and methods for pulse width modulation |
| JP3841282B2 (ja) * | 2002-03-20 | 2006-11-01 | 株式会社安川電機 | Pwmインバータ装置 |
| JP2004289985A (ja) * | 2003-03-25 | 2004-10-14 | Matsushita Electric Ind Co Ltd | モータ駆動用インバータ制御装置および空気調和機 |
| US7157952B2 (en) * | 2004-08-20 | 2007-01-02 | L-3 Integrated Systems Company | Systems and methods for implementing delay line circuitry |
| CN100413200C (zh) * | 2005-03-10 | 2008-08-20 | 上海交通大学 | 基于平均电流补偿的逆控制电流跟踪控制方法 |
-
2007
- 2007-03-06 JP JP2008508468A patent/JP4730435B2/ja active Active
- 2007-03-06 US US12/295,926 patent/US8189356B2/en active Active
- 2007-03-06 CN CN2007800120783A patent/CN101416374B/zh active Active
- 2007-03-06 WO PCT/JP2007/054323 patent/WO2007113972A1/ja not_active Ceased
- 2007-03-06 KR KR1020087024386A patent/KR20080109826A/ko not_active Ceased
- 2007-03-06 EP EP07737870.1A patent/EP2006990A4/en not_active Withdrawn
- 2007-03-14 TW TW096108799A patent/TW200740098A/zh unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000102257A (ja) | 1998-09-21 | 2000-04-07 | Yaskawa Electric Corp | インバータのpwmパルス発生方法および発生装置 |
| JP2001197725A (ja) * | 2000-01-07 | 2001-07-19 | Fuji Electric Co Ltd | Pwmパルスの発生方法 |
| WO2005034327A1 (ja) * | 2003-09-30 | 2005-04-14 | Mitsubishi Denki Kabushiki Kaisha | インバータ装置 |
| JP2006014449A (ja) * | 2004-06-24 | 2006-01-12 | Matsushita Electric Ind Co Ltd | Pwm回路およびpwm回路制御方法 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP2006990A4 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009118599A (ja) * | 2007-11-05 | 2009-05-28 | Yaskawa Electric Corp | Pwmインバータ装置 |
| JP4911241B1 (ja) * | 2010-11-16 | 2012-04-04 | ダイキン工業株式会社 | 電力変換装置 |
| WO2012066914A1 (ja) * | 2010-11-16 | 2012-05-24 | ダイキン工業株式会社 | 電力変換装置 |
| US9018871B2 (en) | 2010-11-16 | 2015-04-28 | Daikin Industries, Ltd. | Power conversion apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2007113972A1 (ja) | 2009-08-13 |
| US20090161393A1 (en) | 2009-06-25 |
| EP2006990A1 (en) | 2008-12-24 |
| JP4730435B2 (ja) | 2011-07-20 |
| CN101416374A (zh) | 2009-04-22 |
| KR20080109826A (ko) | 2008-12-17 |
| EP2006990A4 (en) | 2017-04-26 |
| US8189356B2 (en) | 2012-05-29 |
| CN101416374B (zh) | 2011-12-07 |
| TW200740098A (en) | 2007-10-16 |
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