专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2001292532A BATTERY ENERGY STORAGE SYSTEM 失效
公开(公告)号：JP2001292532A
公开(公告)日：2001-10-19
申请号：JP2000103864
申请日：2000-04-05
申请人： NISSIN ELECTRIC CO LTD
发明人： TADA TOMOSHI
IPC分类号： H02J7/00 , H01M10/44 , H01M10/48 , H02J7/34
摘要： PROBLEM TO BE SOLVED: To solve the problems associated with the cost of battery replacement of a secondary battery unit, in which a plurality of batteries in minimum unit are connected in series. SOLUTION: In a system, a birectional inverter 4, having on the series side a secondary battery unit 3 with a plurality of batteries B1 to Bn connected in series, is linked on the alternating-current side with a power system through a linkage transformer 5. The batteries B1 to Bn of the secondary battery unit 3 are connected in parallel with normally open bypass switches S1 to Sn, and faulty battery is isolated electrically from other batteries in series connection by turning on the bypass switch, corresponding to the faulty battery to continue the operation of the inverter 4. The secondary battery unit 3 is constituted of electrolyte-circulating secondary batteries, so that faulty battery can be replaced by replacing only the electrodes of a single cell (battery) and, batteries can be replaced at a low cost.

2. 发明专利

JP2001197666A SELF-EXCITING POWER CONVERTER 失效
公开(公告)号：JP2001197666A
公开(公告)日：2001-07-19
申请号：JP2000006622
申请日：2000-01-14
申请人： KANSAI ELECTRIC POWER CO , NISSIN ELECTRIC CO LTD
发明人： TOKUDA NOBUYUKI , KIKUOKA YASUHEI , TADA TOMOSHI , KAWAKATSU TAKESHI
IPC分类号： H02J3/01 , H02M1/12 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide a hybrid self-exciting power converter where the capacity of a LC filter placed between a series circuit of a large-capacity rectangular wave converter and a small-capacity PWM converter and a system is reduced. SOLUTION: A hybrid self-exciting power converter, where a large-capacity rectangular wave converter 4 and a small-capacity PWM converter 6 are series- connected with each other, is provided with a control circuit 12 that detects a harmonic current flowing from a power system 1 to a LC filter 11, decomposes the detected harmonic current into harmonic components of a plurality of orders, and causes the small-capacity PWM converter 6 to produce a voltage in the direction, in which it operates against the decomposed harmonic components. Thus, in the self-exciting power converter, the flow of various harmonic components from the system side to the converter side is suppressed through the operation of the small-capacity PWM converter 6. As a result, a small- capacity filter that absorbs only the harmonic components flowing from the large-capacity rectangular wave converter 4 to the system side can be used for the LC filter 11 placed between the system side and the converter side.

3. 发明专利

JP2000341861A CONTROL METHOD OF POWER STORAGE SYSTEM 失效
公开(公告)号：JP2000341861A
公开(公告)日：2000-12-08
申请号：JP14362799
申请日：1999-05-24
申请人： NISSIN ELECTRIC CO LTD
发明人： TADA TOMOSHI
IPC分类号： H02J15/00 , B60M3/06 , H02J3/00 , H02J3/32
摘要： PROBLEM TO BE SOLVED: To provide a control method of a power storage system, whereby the demand cutting-out effect of a power system can be exhibited and by recycling the regenerating power of its load its regenerating energy utilized effectively to reduce the power of its receiving end. SOLUTION: In this control method of a power storage system, a load demand WL obtained through integration of every arbitrary time interval the consuming power of a power regenerating load is compared with a preset desired demand WR, and there is compensated every arbitrary time a demand compensating power PC1, which is in matching with the demand difference obtained by the comparison of the load demand WL with the preset desired demand WR. Also, a load power PL of the power regenerating load is compared with a preset peak value PLM of the load power PL, and as a peak-cut power PC2, the exceeding portion is compensated which is obtained, when the load power PL of the power regenerating load exceeds its preset peak value PLM. Furthermore, by using the load power PL as an upper limit value, a compensating power PC equal to the demand compensating power PC1 plus the peak-cut power PC2 is so restricted that it does not exceed the load power PL, and the regenerating power generated in the power regenerating load by the restriction of the compensating power PC is absorbed in the power storage system.

4. 发明专利

JP2000175360A INVERSE POWER FLOW METHOD OF POWER STORING SYSTEM 失效
公开(公告)号：JP2000175360A
公开(公告)日：2000-06-23
申请号：JP34327498
申请日：1998-12-02
申请人： NISSIN ELECTRIC CO LTD
发明人： TADA TOMOSHI
IPC分类号： H02J7/34 , H02J3/18 , H02J3/28 , H02J3/38
摘要： PROBLEM TO BE SOLVED: To realize the leveling of power by restraining power change and voltage change. SOLUTION: This power storing system is equipped with a battery for storing electric power which is connected with a power system via a converter which system interconnects dispersed power sources containing wind power generation with a commercial power source system, and performs the leveling of power by supplying the power stored in the battery to a load. This inverse power flow method turns generated power of the dispersed power sources and various kinds of information containing weather information and load information into a data base, turns inverse power flow PS to the commercial power source system into a pattern on the basis of the various kinds of information, calculates charge and discharge power PB of the battery from the patterned inverse power flow PS and the generated power PG of the dispersed power sources, charges the battery with the generated power PG of the dispersed power sources in a light load time zone containing night, discharges the stored power of the battery in a heavy load time zone containing daytime, and makes power matched with a load power flow inversely to the commercial power source system.

5. 发明专利

JPH1139046A FEEDBACK CONTROL CIRCUIT 失效
公开(公告)号：JPH1139046A
公开(公告)日：1999-02-12
申请号：JP19594697
申请日：1997-07-22
申请人： NISSIN ELECTRIC CO LTD
发明人： TADA TOMOSHI
IPC分类号： G05B13/02 , G05F1/70
摘要： PROBLEM TO BE SOLVED: To suppress a control error which tends to be larger as a parameter of a control object varies within a certain degree of permissible range. SOLUTION: This circuit is constituted so that a control gain automatically controls a difference between an output command signal Y for a control communication function 2 set in advance to be relatively low and an output signal Y of a control object 3. In this case, an average mean value of a control differential ΔY, which is a difference between the output command signal Y and the output signal Y, and a specified value (1pu) are added to make a regulation gain G and the regulation gain G is multiplied to an output signal UB of the control communication function 2 to make a control signal U of the control object 3.

6. 发明专利

JPH0965574A CONTROL OF SELF-EXCITED REACTIVE POWER COMPENSATING DEVICE 失效
公开(公告)号：JPH0965574A
公开(公告)日：1997-03-07
申请号：JP21350095
申请日：1995-08-22
申请人： NISSIN ELECTRIC CO LTD
发明人： TADA TOMOSHI
IPC分类号： H02J3/18 , G05F1/70 , H02M7/48 , H02M7/483
摘要： PROBLEM TO BE SOLVED: To prevent the appearance of the current flow-in or flow-out by means of error component of the inverter voltage while a small-capacity PWM inverter is being operated in a self-excited reactive power compensating device which has a large-capacity rectangular-wave inverter and the small-capacity PWM inverter. SOLUTION: Only when the DC voltage EF of a DC capacitor 12 of a small- capacity PWM inverter becomes the same as or larger than a set value EFREF, a negative power control signal 'k' to correspond to an error component of the inflow inverter power is found. Only when an effective value of the rectifier current IR becomes the same as or larger than a set value IRREF, a positive power control signal 'k' to correspond to an error component of the outflow inverter power is found. Then, an amplitude adjustment signal kICREF which is obtained by multiplying a compensating current command value ICREF by the positive or negative power control signal and an output current control signal VI are added to obtain a final output voltage command signal VFREF and on that signal, the appearance of an error component of the inflow and outflow inverter power during operation of an inverter is prevented.

7. 发明专利

JPH08263154A CONTROL METHOD FOR SELF-EXCITED REACTIVE POWER COMPENSATION DEVICE 失效
公开(公告)号：JPH08263154A
公开(公告)日：1996-10-11
申请号：JP6752295
申请日：1995-03-27
申请人： NISSIN ELECTRIC CO LTD
发明人： TADA TOMOSHI
IPC分类号： H02J3/18 , G05F1/70 , H02M7/48
摘要： PURPOSE: To provide the control method for the self-excited reactive power compensation device(SVC) which evades adverse influence of the voltage error component between the output voltage of a large-capacity inverter and a bus voltage on the compensating current control system of a small-capacity inverter. CONSTITUTION: A pulse generator 12 is placed in operation according to the bus voltage VA similar to the output voltage VB of the large-capacity inverter to generate a large-capacity inverter gate signal. The small-capacity inverter, on the other hand, finds a current control signal VI from a control signal performing feedback control so that the difference between a compensating current command value Ic REF from a load current IL and an actual compensating current Ic becomes small, finds an SVC output voltage command value VVREF by adding the bus voltage VA thereto, and subtracts the large capacity inverter output voltage VB from it to calculate a small-capacity inverter output voltage command value VFREF.

8. 发明专利

JPH0628486B2 失效
公开(公告)号：JPH0628486B2
公开(公告)日：1994-04-13
申请号：JP6072487
申请日：1987-03-16
申请人： NISSIN ELECTRIC CO LTD
发明人： SANO KOICHI , TADA TOMOSHI
IPC分类号： H02J3/12 , H02J9/06 , H02M7/48

9. 发明专利

JPH0538052A COUNTERMEASURE DEVICE AGAINST VOLTAGE FLUCTUATION WITH SUPPRESSING FUNCTION FOR HIGHER HARMONIC 失效
公开(公告)号：JPH0538052A
公开(公告)日：1993-02-12
申请号：JP21597691
申请日：1991-07-31
申请人： NISSIN ELECTRIC CO LTD
发明人： MATSUKAWA MITSURU , TADA TOMOSHI
IPC分类号： H02J3/01 , H02J3/12
摘要： PURPOSE:To set a higher harmonic wave current flowing to an L-C filter installed at a load side in an initializing range by controlling to turn ON, OFF a voltage type PWM converter by a pulse from a PWM pulse generator. CONSTITUTION:A voltage 21 generated from a countermeasure device against voltage fluctuation is applied from a power source 1 through a power source impesdance 20, and a higher harmonic wave current source 23 is connected through a power distribution is impedance 22. A basic wave component is compensated by a voltage generated by the countermeasure device against voltage fluctuation by a basic wave compensating voltage signal to maintain a voltage of a load side at a rated value. And, a higher harmonic wave component is processed by inputting a signal obtained by multiplying a higher harmonic wave component of a power source current signal by a gain to an adder together with a basic wave compensation voltage signal to form a PWM pulse train, and controlling ON, OFF a PWM converter. Thus, the higher harmonic wave current flowing to an L-C filter 7 to be mounted at the load side can be set to an initializing range.

10. 发明专利

JPH03183368A INVERTER CIRCUIT 失效
公开(公告)号：JPH03183368A
公开(公告)日：1991-08-09
申请号：JP32353189
申请日：1989-12-12
申请人： NISSIN ELECTRIC CO LTD
发明人： MATSUKAWA MITSURU , TADA TOMOSHI
IPC分类号： H02H7/122 , H02M7/48
摘要： PURPOSE:To suppress the magnitude and the rising rate of temporary source short circuit current due to reverse recovery function of a circulation diode in an inverter circuit by connecting a series circuit of the circulation diode and a saturable reactor in parallel with a short circuit current suppressing reactor. CONSTITUTION:A saturable reactor 4 and a circulation diode D0 are connected in series to the plus side of a DC power supply 1 and also connected in parallel with a short circuit current suppressing reactor 2, and a switching circuit is connected to the other end thereof. The saturable reactor 4 exhibits reactor effect upon short circuit of power supply during reverse recovery time interval of circulation diodes D0-D4. At a time point when the saturable reactor 4 exhibits no reactor effect, all circulation diodes D0-D4 have been reversely recovered and provided with reverse block capability, and thereby no short circuit current flow. By such arrangement, short circuit current can be suppressed during an interval after reverse voltage is applied onto the circulation diodes D0-D4 before they are reversely recovered and provided with reverse block capability.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式