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1. 发明申请

US20190011940A1 POWER HARVESTING CIRCUIT 审中-公开
公开(公告)号：US20190011940A1
公开(公告)日：2019-01-10
申请号：US16034459
申请日：2018-07-13
申请人： PulselQ, LLC
发明人： Emilio A. FERNANDEZ , Angel P. BEZOS
IPC分类号： G05D23/24 , H02P27/04 , H02H1/00 , H02H7/055
CPC分类号： G05D23/2451 , H02H1/0007 , H02H1/0061 , H02H7/055 , H02M7/06 , H02M7/068 , H02M2001/0064 , H02M2001/0083 , H02P27/04
摘要： A power harvesting system employs a saturable core transformer having two primary windings and at least one secondary winding. One of the primary windings is a high impedance winding, and the other primary winding is a low impedance winding. The two primary windings are connected with the load (motor). The secondary winding provides power to the circuit components of a replacement electronic thermostat. Relay contacts connects A/C power to either the high impedance primary winding or to the low impedance primary winding. When the relay is de-energized, A/C power is applied to the high impedance winding so that a relatively small amount of current flows through both the high impedance winding and the load. This current is low enough that it does not energize the load but is sufficient to generate the required voltage to transfer power to the secondary winding. This power can be used to power an electronic thermostat. When the relay is energized, A/C power is applied directly to the low impedance primary winding, energizing the load. At the beginning of each A/C cycle, the current through the low impedance winding builds up rapidly until the core saturates. The result is that a short pulse is generated in the secondary on both the positive and negative A/C cycle. This pulse has an amplitude determined by the turns ratio of the low impedance winding to the secondary winding and is used to power the electronic thermostat. After the core saturates, the impedance of the low impedance winding is only the resistance of the wire of the winding which is relatively small and results in negligible impact on the load.

2. 发明申请

US20180342950A1 VOLTAGE DOUBLING CIRCUIT FOR LAUNDRY TREATING APPLIANCE WITH HIGH POWER VARIABLE FREQUENCY DRIVE 审中-公开
公开(公告)号：US20180342950A1
公开(公告)日：2018-11-29
申请号：US15946140
申请日：2018-04-05
申请人： WHIRLPOOL CORPORATION
发明人： DANIEL QUINN
IPC分类号： H02M3/07 , H02M1/32 , H02P27/04 , D06F37/30 , D06F35/00
CPC分类号： H02M3/073 , D06F33/02 , D06F35/005 , D06F37/304 , D06F2202/02 , D06F2202/04 , D06F2202/10 , D06F2202/12 , H02M1/10 , H02M1/32 , H02P27/04 , H02P2201/09
摘要： A circuit that increases input voltage to higher output voltage connected to a variable frequency drive in an appliance. Several switching arrangements, timing, and safety mechanisms are in place to assist. When the circuit experiences high draw, high voltage output values of circuit decrease over time, but different aspects of the circuit can be constructed so that the amount of time required at a higher voltage does not exceed the amount of time in which the high voltage output is provided.

3. 发明申请

US20180302016A1 PORTABLE MOTOR DRIVE SYSTEM 审中-公开
公开(公告)号：US20180302016A1
公开(公告)日：2018-10-18
申请号：US16011180
申请日：2018-06-18
申请人： Andrew John Bartlik , Charles Thomas McLees, JR.
发明人： Andrew John Bartlik , Charles Thomas McLees, JR.
IPC分类号： H02P27/04 , H02P23/00
CPC分类号： H02P27/04 , H02P23/0004
摘要： Systems and methods for driving a motor are provided. One implementation of a drive system comprises a user interface, a variable speed drive, and a controller. The user interface enables a user to select an operating frequency set point and an operating voltage set point. The operating frequency set point is selected from a range of frequency set points and the operating voltage set point is selected from a range of voltage set points. The variable speed drive is configured to drive a motor at the selected operating frequency set point and selected operating voltage set point. The controller is configured to receive input from the user interface and control the operating frequency and operating voltage of the variable speed drive.

4. 发明申请

US20180269822A1 SYNCHRONOUS MACHINE CONTROL DEVICE AND PERMANENT MAGNET TEMPERATURE ESTIMATION METHOD FOR SYNCHRONOUS MACHINE 有权
公开(公告)号：US20180269822A1
公开(公告)日：2018-09-20
申请号：US15547546
申请日：2016-01-18
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： Junichi AIZAWA , Yoshikazu NAKANO , Akihiro DAIKOKU , Shota HANIOKA
IPC分类号： H02P29/66
CPC分类号： H02P29/662 , H02P6/16 , H02P21/00 , H02P27/04
摘要： Provided are: a synchronous machine having permanent magnets as a field system; a stress estimator that estimates stress acting on the permanent magnets; and a first magnet temperature corrector that calculates an amount of demagnetization due to stress of armature interlinkage magnetic flux on the basis of the estimated stress, estimates an amount of demagnetization due to stress of the armature interlinkage magnetic flux on the basis of the rotor position of the synchronous machine, a current command and a voltage command, and the amount of demagnetization due to stress of the armature interlinkage magnetic flux; and outputs a permanent magnet temperature estimated value after correction, having factored therein the amount of demagnetization due to stress of the armature interlinkage magnetic flux from the estimated armature interlinkage magnetic flux.

5. 发明授权

US09935575B2 Power conversion device and control method for same, and electric power steering control device 有权
公开(公告)号：US09935575B2
公开(公告)日：2018-04-03
申请号：US15503744
申请日：2014-10-08
申请人： Mitsubishi Electric Corporation
发明人： Tatsuya Mori , Akira Furukawa
IPC分类号： H02P21/00 , H02P21/22 , H02P21/14 , H02P27/08 , H02M7/5395 , B62D5/04 , H02M1/00
CPC分类号： H02P21/22 , B62D5/0463 , H02M7/5395 , H02M2001/0009 , H02P21/00 , H02P21/14 , H02P27/04 , H02P27/08
摘要： Provided are a power conversion device, relating to control of detecting a bus current in operation, and capable of acquiring an average current through a small amount of calculation and being implemented by an inexpensive microcomputer. A variation in a winding current flowing through a multi-phase winding of an AC rotating machine, namely, a phase current, is small at a timing at which voltage vectors on both sides of an axis having a larger inductance out of d and q axes of the AC rotating machine are output. Thus, switching signals are generated at timings at which the voltage vectors on both sides of the axis having the larger inductance out of the d and q axes are output, and the bus current is detected in accordance with the switching signals, thereby acquiring a value close to an average of the winding current.

6. 发明申请

US20170366097A1 CONVERTER ARRANGEMENT COMPRISING MOVABLE CONTACTS, BUT IMMOVABLE CONVERTER ASSEMBLY 审中-公开
公开(公告)号：US20170366097A1
公开(公告)日：2017-12-21
申请号：US15544802
申请日：2015-12-09
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： ANDREAS NAGEL , HARALD PONATH
IPC分类号： H02M7/00 , B60R16/03 , H02J4/00 , H02P27/04
CPC分类号： H02M7/003 , B60R16/03 , H01H31/32 , H02J4/00 , H02P27/04
摘要： A converter arrangement includes a basic structure having a receptacle, a first electrical network including lines arranged on the basic structure, a plurality of first contacts arranged on the basic structure and movable via a first actuator from a first connection position into a first release position, and a converter assembly securable in the first release position as a unit in a fixed location in the receptacle of the basic structure and removable from the receptacle. The converter assembly is electrically connected to the lines of the first electrical network when the first contacts assume the first connection position, and electrically disconnected from the lines of the first network when the first contacts assume the first release position. The receptacle of the basic structure is immobile when the first contacts move from the first connection position into the first release position.

7. 发明申请

US20170304976A1 ELECTRIC WORKING MACHINE 审中-公开
公开(公告)号：US20170304976A1
公开(公告)日：2017-10-26
申请号：US15478691
申请日：2017-04-04
申请人： MAKITA CORPORATION
发明人： Akihiro NAKAMOTO
IPC分类号： B23Q11/00 , B25F5/00 , B24B23/02 , H02P3/06
CPC分类号： B23Q11/0089 , B23Q11/0085 , B23Q11/0092 , B24B23/028 , B25F5/00 , H02P3/06 , H02P3/12 , H02P3/18 , H02P7/295 , H02P25/14 , H02P27/04 , H02P29/024 , H02P29/0241
摘要： An electric working machine comprises a motor, a switch, a drive device, a brake device, and a failure determiner. The switch is configured for operation by a user, has an on-state and an off-state. The drive device is configured to drive the motor in response to the switch being placed in the on-state. The brake device is configured to control deceleration of the motor to a stopped state in response to the switch being placed in the off-state. The failure determiner is configured to monitor deceleration of the motor during controlled deceleration and to determine whether the brake device has failed based on the monitored deceleration.

8. 发明授权

US09793847B2 Electric power tool 有权
公开(公告)号：US09793847B2
公开(公告)日：2017-10-17
申请号：US15073005
申请日：2016-03-17
申请人： Hitachi Koki Co., Ltd.
发明人： Kazutaka Iwata , Toshiaki Koizumi
IPC分类号： H02K19/10 , H02P27/06 , H02P27/04 , H02P6/15 , H02P6/10 , H02P6/28 , H02P6/00
CPC分类号： H02P27/06 , H02K19/10 , H02P6/10 , H02P6/15 , H02P6/157 , H02P6/28 , H02P27/04
摘要： An electric power tool includes: a brushless motor having a plurality of stator windings and configured to rotate in accordance with voltages applied to the plurality of stator windings, an induced voltage being generated in accordance with a rotation of the brushless motor; a rectifier circuit configured to rectify an AC voltage; a smoothing capacitor configured to smooth the AC voltage rectified by the rectifier circuit to a pulsation voltage having a maximum value larger than the induced voltage and a minimum value smaller than the induced voltage; and an inverter circuit configured to perform switching operations to output the pulsation voltage to the plurality of stator windings by rotation.

9. 发明申请

US20170264220A1 VARIABLE FREQUENCY DRIVE MOTOR CONTROL 有权
公开(公告)号：US20170264220A1
公开(公告)日：2017-09-14
申请号：US15025836
申请日：2015-09-02
申请人： Halliburton Energy Services, Inc.
发明人： Warren Neil Rattan , Charles Edward Neal , James Douglas Funkhouser , Derek Williams , Gary Lee Cline , Derek James Abel , Troy Dale Bachman
IPC分类号： H02P6/04 , H02P27/08 , E21B33/14 , H02P23/00
CPC分类号： H02P6/04 , E21B33/14 , H02P5/74 , H02P23/0077 , H02P27/04 , H02P27/06 , H02P27/08
摘要： Various embodiments include a variable frequency drive motor control apparatus. The apparatus includes a main controller having a first interface. A motor controller is coupled to and controls an electric motor, the motor controller further coupled to the main controller. A network switch is coupled to the main controller, the motor controller, and a remote controller over respective digital connections. The remote controller has a second interface. The network switches data between the first interface, the second interface, and the motor controller. A network coupler is coupled between a variable frequency drive controller and the motor controller.

10. 发明授权

US09748884B2 Multi-motor frequency control system and control method thereof 有权
公开(公告)号：US09748884B2
公开(公告)日：2017-08-29
申请号：US15228125
申请日：2016-08-04
申请人： Xiaofei Hu , Hongxing Wang , Yao Wang
发明人： Xiaofei Hu , Hongxing Wang , Yao Wang
IPC分类号： H02K33/00 , H02P25/032 , H02P27/04
CPC分类号： H02P25/032 , H02P27/04
摘要： The invention provides a multi-motor frequency control system and a control method thereof. The system includes an event generation module, a control module, a signal selection module, a motor module including multiple motors, a driving module for driving the motor vibration, a frequency processing module, and a frequency reading module for reading the vibration frequency of at least one motor and giving feedback to the frequency processing module. Further, a control method of the multi-motor frequency control system is also provided.

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