US20070267987A1 - Tandem battery powered inverter and method of implementing same - Google Patents
Tandem battery powered inverter and method of implementing same Download PDFInfo
- Publication number
- US20070267987A1 US20070267987A1 US11/831,566 US83156607A US2007267987A1 US 20070267987 A1 US20070267987 A1 US 20070267987A1 US 83156607 A US83156607 A US 83156607A US 2007267987 A1 US2007267987 A1 US 2007267987A1
- Authority
- US
- United States
- Prior art keywords
- power module
- inverter
- power
- motors
- alternating current
- 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.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/24—Electrical devices or systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2210/00—Converter types
- B60L2210/20—AC to AC converters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
- H01L2224/491—Disposition
- H01L2224/4911—Disposition the connectors being bonded to at least one common bonding area, e.g. daisy chain
- H01L2224/49111—Disposition the connectors being bonded to at least one common bonding area, e.g. daisy chain the connectors connecting two common bonding areas, e.g. Litz or braid wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
- H01L2224/491—Disposition
- H01L2224/4911—Disposition the connectors being bonded to at least one common bonding area, e.g. daisy chain
- H01L2224/49113—Disposition the connectors being bonded to at least one common bonding area, e.g. daisy chain the connectors connecting different bonding areas on the semiconductor or solid-state body to a common bonding area outside the body, e.g. converging wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
- H01L2224/491—Disposition
- H01L2224/4912—Layout
- H01L2224/49175—Parallel arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1305—Bipolar Junction Transistor [BJT]
- H01L2924/13055—Insulated gate bipolar transistor [IGBT]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1306—Field-effect transistor [FET]
- H01L2924/13091—Metal-Oxide-Semiconductor Field-Effect Transistor [MOSFET]
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
AC inverters that are electrically connected to a direct current source to convert the direct current source such that the transistor power module of an inverter can power a plurality of AC motors wherein the motors can be located remote from the inverters or within the inverter housings.
Description
- This invention relates to electrically powered fork lift trucks. More specifically, the present invention relates to alternating current inverters and motors for such trucks.
- Industrial trucks such as forklift trucks are used for transporting heavy materials within warehouses, for stacking goods, and for other well known useful purposes. Such industrial trucks are often powered by a large lead acid battery. In such trucks electric motors are used to convert the battery's electrical power for propelling the machine, lifting the pay load, steering the machine, and for other useful purposes. Recent technology improvements in solid state power electronics have made the use of alternating current (AC) electrical motors a practicality through the advent of improved inverters. Battery powered inverters are an electronic device that convert the battery's direct current energy into three phase alternating current energy of an adjustable frequency and adjustable voltage level to create the desired performance of an electrical motor. The same functions are sometimes accomplished through the use of fuel cell power sources, hi-bred, and other electrical power sources. The present invention applies to all electrically powered industrial trucks regardless of chemistry of a storage battery that is used with any other source of the electrical power.
- In current forklift trucks, multiple electric motors that use multiple AC inverters are used. The system cost of using one inverter for each motor can be excessive. In many cases, the inverter cost is a serious drawback for OEMs (original equipment manufacturers) that want to go to maintenance free AC solutions. Consequently, problems remain in the art regarding the cost of using a plurality of motors, and regarding the amount of space the extra inverters take up in order to supply power to extra motors.
- Therefore, there is a need in the art for an inverter that will be battery powered from a truck's lead acid battery that will have a power module that is able to power a plurality of motors. Additionally, there is a need in the art to provide for such a power module that will allow an inverter to be housed within the motor. Also, there is a need for a system that will properly cool this power module to ensure proper functioning.
- Additionally, there is a need in the art for a means of configuring a single power module to independently control two electric motors. Due to the high cost of tooling that would be required to produce a completely new power module design, it is important to provide means of producing a tandem power module which uses existing power module packaging designs. To further reduce the cost of providing multiple models of inverters with a minimum number of different power modules, there is also a need in the art to optionally use a single power module design to either power a single electric motor of a higher current draw rating. In this manner the present invention teaches a means of producing a single power module that may be used in either a tandem inverter of moderate rating or in a single inverter of higher rating.
- Therefore, it is a principal object of the present invention to provide an improved inverter that allows the inverter to power a plurality of motors.
- Yet another object of the present invention is to provide for a cooling system that uses hydraulic fluid in order to cool the inverter.
- Yet another object of the present invention is to provide for a cooling system that uses hydraulic fluid in order to cool the inverter.
- Still another object of the present invention is to provide a single power module that may optionally be connected to supply a single electric motor of high current draw.
- Yet another object of the present invention is to provide a single power module that may optionally be connected to control more than one electric motor of moderate to current draw.
- These and other objects, features, or advantages of the present invention will become apparent from the specification and claims.
- Improved alternating current inverters that are used within a forklift. The inverters have a housing that is connected to a direct current source such as the battery of a forklift. An inverter has a plurality of power switching transistors such as MOSFETS (metal oxide semi-conductor field effect transistors) that are able to support a plurality of alternating current motors that are in communication with the housing. Optionally, one of the plurality of motors can be housed within the inverter housing, thus a direct current source can be used to power a plurality of alternating current motors by using a single inverter. Additionally, the invention provides for a fluid cooling system that uses hydraulic fluid to cool the inverter.
-
FIG. 1 is a schematic diagram illustrating a prior art alternating current inverter system; -
FIG. 1A is a schematic diagram illustrating a prior art alternating current inverter system continued fromFIG. 1 along lines F1, F2 and F3; -
FIG. 2 is a schematic diagram of an embodiment of an alternating current inverter system; -
FIG. 3 is a schematic diagram of an alternative embodiment of an alternating current inverter system; -
FIG. 4 is a schematic diagram of a mechanical layout of a substrate section from within a power module; -
FIG. 5 is a schematic diagram of a mechanical layout of a half bridge power module; -
FIG. 6 is a schematic diagram of a mechanical layout of a three phase full bridge power module; -
FIG. 7 is a schematic diagram of a mechanical layout of a dual half bridge power module; -
FIG. 8 is a schematic diagram of a mechanical layout drawing of a three phase full bridge power module of the present invention that is externally connected as a tandem inverter; -
FIG. 9 is a schematic diagram of a mechanical layout of a three phase full bridge power module of the present invention that is externally connected as a high current single inverter. - With reference to
FIG. 1 , a conventional alternating current (AC)inverter system 10 is shown having anAC inverter 12, a direct current (DC)source 14 such as a lead acid battery, a fuel cell, or a hy-bred direct current power source; and anelectric motor 16 such as an AC motor that can be operated as an electrical generator. Prior art devices such as that shown inFIG. 1 teach connecting eachAC motor 16 to aseparate AC inverter 12. - With reference to
FIG. 2 , the presentAC inverter system 10 also includes anAC inverter 12, aDC source 14, andelectric AC motors 16. The presentAC inverter system 10 connects a plurality ofAC motors 16 to at least oneAC inverter 12. TheAC inverter 12 of the present invention has ahousing 18 that is connected to the master controller by an external CAN (Controller Area Network)connection 20 that alternately connects to aCAN interface 22 within thehousing 18. TheCAN interface 22 is electronically connected to acontroller circuit 24 and acontrol power supply 26. Thecontrol power supply 26 is electrically connected to the positivecopper bus bar 28 that is in communication with thepositive battery connection 30 of the directcurrent source 14. Additionally, thepositive battery connection 30 has afuse 32. The positivecopper bus bar 28 is electrically connected to thecapacitor board 34 that additionally is electrically connected to the negativecopper bus bar 36 that is in communication with thenegative battery connection 38 of theDC source 14. Consequently, theDC source 14 is electrically connected to thetransistor power module 40 of the present invention via the positivecopper bus bar 28 and negativecopper bus bar 36 that additionally places thecapacity board 34 in parallel electrical connection with thetransistor power module 40. Additionally, thecontroller circuit 24 is electrically connected to thetransistor power module 40. - As best seen in
FIG. 3 , in an alternate embodiment anAC motor 16 can be incorporated within thehousing 12 and operated by thetransistor power module 40 while a second AC motor can be powered using externalmotor phase connections 42 remote to thehousing 12. Thus, the inverter may be modified in relation to themotors 16 according to the need of an application. - Additionally, one skilled in the art will understand that the
housing 12 can further contain a hydraulic pump. Thus, attached to thetransistor power module 40 is a heat sink 44 for cooling thetransistor power module 40. The heat sink 44 in one embodiment is the use of hydraulic fluid that absorbs heat that is being emitted by thetransistor power module 40. Yet in another embodiment a mechanical thermostat can control the cooling aspects of theinverter 12. - The
transistor power module 40 is specially designed to have power switching transistors installed therein such that thetransistor power module 40 is able to power a plurality ofAC motors 16 viamotor phase connections 42 thus being operably connected to themotors 16. In one embodiment the power switching transistors are MOSFETS (metal oxide semi-conductor field effect transistors). In another embodiment the transistors are IGBTs (insulated gate bi-polar transistors). - A brief description is given here of power module substrate sections to more clearly differentiate the present invention from the prior art. A power module substrate section assembly 50 typically consists of a section of
substrate 52 onto which several copper circuit traces (54, 56, 58, 60) are formed. A plurality oftransistors 62 such as MOSFET chips are bonded to the copper traces on the substrate. A plurality ofbonding wires copper trace 56 will be connected to the positive connection of a direct current (DC) source such as a battery. A series offirst bond wires 68 will connect the first copper circuit trace region to other substrate section assemblies 50 or to the external package connections which are depicted inFIGS. 5 through 9 . - In a similar manner, a copper circuit trace region 60 is connected to a negative lead of the direct current source such as a battery. A plurality of
second bonding wires 70 connect the negative circuit trace to other substrate section assemblies contained within a power module or to the package external terminals. A third maincopper circuit trace 58 is also provided. This thirdcopper circuit trace 58 is the output circuit trace of the power module. By alternately energizing positiveside switching transistors 62 and negativeside switching transistors 72 the power module outputcircuit trace region 58 is alternately connected to either the positive or negative battery leads. A single phase of a three phase alternating current is thus produced which is able to drive an alternating current electric motor. -
FIG. 5 provides one example of a halfbridge power module 74 that contains a plurality ofsubstrate section assemblies 52. A plurality offirst bonding wires 68 connect the positive circuit trace region to the adjacent substrate assembly and to the external packagepositive terminal 76. In a similar manner, a plurality ofbond wires 70 connect the negative circuit trace to the negativeexternal terminal 78 and to the negative circuit trace 60 of the adjacent module. A plurality ofthird bonding wires 80 connect theoutput circuit trace 58 to the outputexternal package terminal 82 and also interconnect the output circuit traces 58 of adjacent substrate section assemblies. -
FIG. 6 shows three phase full bridge power module 84 that consists of three side by side single phase half bridgepower module sections 86. In single motor three phase power modules as seen inFIG. 6 , each phase half bridge incorporates three interconnected substrate section assemblies. The output circuit trace of all three substrate sections are interconnected with a plurality of bonding wires. As such, it is not possible to operate two of the substrate sections of each phase to power a separate motor. Thus, an alternate way of configuring a power module such that a single power module (or a single set of power modules in the case of half bridge power modules) is able to drive two electric motors rather than being limited to a single electric motor driven by a single power module must be provided. - As shown in
FIG. 7 it is possible to omit a plurality of output trace bonding wires which would interconnect substrate section assemblies. The present invention teaches that doing so will produce a power module which incorporates two separate and independently drivable power stages which can be used to independently drive two different electric motors. Note thatoutput terminals 82 of the power module inFIG. 7 are supplied by the same direct current source and occupy the same package but are driven by separate sets of transistors. As such a power module is created which can drive two electric motors. This is accomplished by positioningoutput terminals 82 on opposite corners of the power module inFIG. 7 rather than adjacent to each other as inFIG. 5 . - As shown in
FIG. 8 the power module of the new design can be extended to a three phase full bridge power module.FIG. 8 depicts how two substrate section assemblies in each phase are connected to a first electric motor while the remaining substrate section assembly in each phase is connected to a second and smaller electric motor. As such a tandem power module is produced that is capable of directing independent controllable power to two separate alternating current (AC) electric motors. Thus themodule 40 is able to switch the current communicated to theelectric motors 16. In another embodiment thepower module 40 contains twelve terminals and is adapted to switch currents that are in communication with theelectric motors 16. In this embodiment the module is able to also switch the current to a single electric motor. Finally, the tandem power module ofFIG. 8 may be externally connected to form a single high current power module as seen inFIG. 9 . - In a similar manner it is possible to produce a tandem or greater power stage for a multiple motor inverter with conventional printed circuit board technology which uses wither surface mount or discrete transistors. In another alternate embodiment of the present invention an IMS (Insulated Metal Substrate) power module can implement a tandem inverter power stage. Other circuit packaging strategies beyond power modules are also contemplated, including a series of thru-hole packaged transistors, or a series of transistors contained in surface mounted packages, without limit for implementing the tandem inverter of the present invention.
- It is therefore seen that by connecting a plurality of alternating current motors to a single alternating current inverter, the present invention conserves space and resources, thereby accomplishing at least all of the stated objectives.
- It will be appreciated by those skilled in the art that other various modifications could be made to the device without the parting from the spirit in scope of this invention. All such modifications and changes fall within the scope of the claims and are intended to be covered thereby.
Claims (6)
1. An alternating current inverter comprising:
a housing;
a power module within the housing;
a direct current source in electrical communication with the housing; and
a plurality of electric motors in electrical communication with the power module;
the power module having two separate and independently
drivable power stages for driving the electric motors; and
wherein at least one motor is disposed within the housing.
2-14. (canceled)
15. The device of claim 1 wherein the inverter is cooled by hydraulic fluid.
16-20. (canceled)
21. A method of inverting direct current into alternating current comprising the steps of:
providing an alternating current inverter that is in electrical communication with a direct current source;
providing a power module within the inverter; and
connecting a plurality of electric motors to the inverter;
providing a power module that has two separate and independently drivable power stages for driving the electric motors; and
cooling the inverter with hydraulic fluid.
22. (canceled)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/831,566 US20070267987A1 (en) | 2004-12-29 | 2007-07-31 | Tandem battery powered inverter and method of implementing same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/025,331 US7317290B2 (en) | 2004-12-29 | 2004-12-29 | Tandem battery powered inverter and method of implementing the same |
US11/831,566 US20070267987A1 (en) | 2004-12-29 | 2007-07-31 | Tandem battery powered inverter and method of implementing same |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/025,331 Continuation-In-Part US7317290B2 (en) | 2004-12-29 | 2004-12-29 | Tandem battery powered inverter and method of implementing the same |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070267987A1 true US20070267987A1 (en) | 2007-11-22 |
Family
ID=36599587
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/025,331 Expired - Fee Related US7317290B2 (en) | 2004-12-29 | 2004-12-29 | Tandem battery powered inverter and method of implementing the same |
US11/831,566 Abandoned US20070267987A1 (en) | 2004-12-29 | 2007-07-31 | Tandem battery powered inverter and method of implementing same |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/025,331 Expired - Fee Related US7317290B2 (en) | 2004-12-29 | 2004-12-29 | Tandem battery powered inverter and method of implementing the same |
Country Status (2)
Country | Link |
---|---|
US (2) | US7317290B2 (en) |
DE (1) | DE102005061929A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1672769A3 (en) * | 2004-12-18 | 2009-07-08 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Actuating device for vehicle components |
EP1889354B1 (en) * | 2005-06-10 | 2010-12-22 | Continental Automotive GmbH | Electronic control unit for controlling external half-bridge end power stages and electromotive drive with electronic control unit |
JP4931458B2 (en) * | 2006-04-06 | 2012-05-16 | 日立オートモティブシステムズ株式会社 | Power converter |
US7821220B2 (en) * | 2006-09-29 | 2010-10-26 | Rockwell Automation Technologies, Inc. | Motor having integral programmable logic controller |
KR101491933B1 (en) * | 2013-11-19 | 2015-02-09 | 엘에스산전 주식회사 | Apparatus for controlling paralleled inverter |
DE102017220136A1 (en) * | 2017-11-13 | 2019-05-16 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Electronics with one or more power amplifier units for the operation of two or more motor units |
DE102020216111A1 (en) * | 2020-12-17 | 2022-06-23 | Robert Bosch Gesellschaft mit beschränkter Haftung | inverters |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4961042A (en) * | 1985-12-05 | 1990-10-02 | Nissan Motor Company, Ltd. | Device for controlling AC motor |
US5491370A (en) * | 1994-01-28 | 1996-02-13 | General Motors Corporation | Integrated AC machine |
US5619111A (en) * | 1995-01-20 | 1997-04-08 | Kabushiki Kaisha Sankyo Seiki Seisakusho | Motor control system for controlling the operations of a plurality of servo motors |
US5789879A (en) * | 1995-11-03 | 1998-08-04 | Cook; Noel R. | Multiple pump hydraulic power system |
US20020033689A1 (en) * | 2000-08-07 | 2002-03-21 | Nissan Motor Co., Ltd. | Motor/generator device |
US20020140390A1 (en) * | 2001-04-03 | 2002-10-03 | Overhead Door Corporation | Power supply system and method for dock equipment |
US6486632B2 (en) * | 2000-09-04 | 2002-11-26 | Nissan Motor Co., Ltd. | Control device for motor/generators |
US20030075376A1 (en) * | 2001-10-22 | 2003-04-24 | Steele Frank E. | Lift truck drive train |
US6838839B2 (en) * | 2000-10-25 | 2005-01-04 | Matsushita Electric Industrial Co., Ltd. | Electric circuit of electric vehicle |
US6906479B2 (en) * | 2002-08-06 | 2005-06-14 | Honeywell International, Inc. | Gas turbine engine starter generator with multiple windings on each exciter stator pole |
US7053567B2 (en) * | 2002-03-15 | 2006-05-30 | Makita Corporation | Power tools |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10003383A1 (en) * | 2000-01-26 | 2001-08-02 | Voith Paper Patent Gmbh | Method for determining a characteristic value for the binding potential of suspended paper fibers and use of the method |
JP2002223589A (en) | 2001-01-25 | 2002-08-09 | Mitsubishi Heavy Ind Ltd | Motor controller for battery fork lift truck |
-
2004
- 2004-12-29 US US11/025,331 patent/US7317290B2/en not_active Expired - Fee Related
-
2005
- 2005-12-23 DE DE102005061929A patent/DE102005061929A1/en not_active Withdrawn
-
2007
- 2007-07-31 US US11/831,566 patent/US20070267987A1/en not_active Abandoned
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4961042A (en) * | 1985-12-05 | 1990-10-02 | Nissan Motor Company, Ltd. | Device for controlling AC motor |
US5491370A (en) * | 1994-01-28 | 1996-02-13 | General Motors Corporation | Integrated AC machine |
US5619111A (en) * | 1995-01-20 | 1997-04-08 | Kabushiki Kaisha Sankyo Seiki Seisakusho | Motor control system for controlling the operations of a plurality of servo motors |
US5789879A (en) * | 1995-11-03 | 1998-08-04 | Cook; Noel R. | Multiple pump hydraulic power system |
US20020033689A1 (en) * | 2000-08-07 | 2002-03-21 | Nissan Motor Co., Ltd. | Motor/generator device |
US6486632B2 (en) * | 2000-09-04 | 2002-11-26 | Nissan Motor Co., Ltd. | Control device for motor/generators |
US6838839B2 (en) * | 2000-10-25 | 2005-01-04 | Matsushita Electric Industrial Co., Ltd. | Electric circuit of electric vehicle |
US6476572B2 (en) * | 2001-04-03 | 2002-11-05 | Overhead Door Corporation | Power supply system and method for dock equipment |
US20020140390A1 (en) * | 2001-04-03 | 2002-10-03 | Overhead Door Corporation | Power supply system and method for dock equipment |
US20030075376A1 (en) * | 2001-10-22 | 2003-04-24 | Steele Frank E. | Lift truck drive train |
US6604601B2 (en) * | 2001-10-22 | 2003-08-12 | Biomet-Ross, Inc. | Lift truck drive train |
US7053567B2 (en) * | 2002-03-15 | 2006-05-30 | Makita Corporation | Power tools |
US6906479B2 (en) * | 2002-08-06 | 2005-06-14 | Honeywell International, Inc. | Gas turbine engine starter generator with multiple windings on each exciter stator pole |
Also Published As
Publication number | Publication date |
---|---|
US7317290B2 (en) | 2008-01-08 |
US20060138993A1 (en) | 2006-06-29 |
DE102005061929A1 (en) | 2006-07-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101330248B (en) | Power converter device | |
EP1881592B1 (en) | Power converter | |
US8031478B2 (en) | Power conversion apparatus | |
US20070267987A1 (en) | Tandem battery powered inverter and method of implementing same | |
CN102025319B (en) | Low inductance power electronics assembly | |
US8400775B2 (en) | Capacitor with direct DC connection to substrate | |
US10121732B2 (en) | Semiconductor device and electric power conversion device having relay terminal directly fixed to an insulating film of base plate | |
JP4655020B2 (en) | Smoothing capacitor module and power converter using the same | |
US20060273592A1 (en) | Power unit | |
US9102242B2 (en) | Mechatronic integration of motor drive and E-machine, especially smart-E-motor | |
CN107710586B (en) | Power conversion device | |
US20140117899A1 (en) | Power conversion apparatus | |
JP2015136223A (en) | power converter | |
JP2017099140A (en) | Power conversion device | |
US6380617B1 (en) | Electrode terminal connection structure of semiconductor module | |
JP5669677B2 (en) | Power conversion device and power conversion module | |
CN101436819A (en) | Power electronics devices with integrated gate drive circuitry | |
US8354816B2 (en) | Power module layout for automotive power converters | |
JP4064741B2 (en) | Semiconductor device | |
US11292511B2 (en) | Electronic control unit and electric power steering apparatus having the same | |
JP4572247B2 (en) | Hybrid vehicle | |
JP6896831B2 (en) | Semiconductor modules and power converters | |
JP7303087B2 (en) | MOTOR DRIVING DEVICE HAVING SMOOTHING CAPACITOR AND SNUBBER CAPACITOR | |
JP4452605B2 (en) | Semiconductor device | |
JP2015171246A (en) | power converter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SAUER-DANFOSS INC., IOWA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GANDRUD, MICHAEL D.;FREDERIKSEN, TORBEN;HERRIN, JEFF;REEL/FRAME:019755/0725;SIGNING DATES FROM 20070809 TO 20070820 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE |