-
公开(公告)号：US11749982B2
公开(公告)日：2023-09-05
申请号：US17206366
申请日：2021-03-19
CPC分类号： H02H7/0844 , H02P23/14 , H02P27/085
摘要： The present invention relates to a motor controller providing a dual-channel func-tional-safety (FS) safe-torque-off (STO) function when controlling a motor. The motor controller includes an inverter with low-side switches and high-side switches, a low-side gate drive connected to the low-side switches, a high-side gate drive connected to the high-side switches, a first functional-safety safe-torque-off circuit connected to the high-side gate drive and a second functional-safety safe-torque-off circuit connected to the low-side gate drive, and a non-reinforced high-voltage isolation barrier.
-
公开(公告)号：US20230253911A1
公开(公告)日：2023-08-10
申请号：US18165100
申请日：2023-02-06
发明人： Md Zakirul ISLAM
CPC分类号： H02P27/085 , H02P23/14
摘要： An electric machine controller is described that is arranged to direct a power converter to cause pulsed operation of the electric machine in selected operational ranges to deliver a desired output. The pulsed operation of the electric machine causes the output of the electric machine to alternate between a first torque level, a second torque level, and an intermediate torque level range providing a shaped pulse pattern. The second torque level is lower than the first torque level and the intermediate torque level range is between the first torque level and the second torque level. The first torque level, second torque level, intermediate torque level range, and shaped pulse pattern are selected to provide a third torque level output such that the system has a higher energy conversion efficiency during the pulsed operation of the electric machine than the system would have when operated at a third torque level that would be required to drive the electric machine in a continuous manner to deliver the third torque level output, wherein the intermediate torque level range is a range of less than 5 Nm and wherein the intermediate torque level range is provided for at least 1 millisecond.
-
公开(公告)号：US20230253910A1
公开(公告)日：2023-08-10
申请号：US18015601
申请日：2021-07-12
发明人： Mathias DEIML , Klaus BEER , Matthias SCHNECK , Ankit VERMA
IPC分类号： H02P27/08
CPC分类号： H02P27/085
摘要： A first electric machine is controlled by a first pulse-width modulated control signal output by a first inverter and having a first signal parameter, and a second electric machine is controlled by means of a second pulse-width modulated control signal output by a second inverter and having a second signal parameter. The first signal parameter is output from the first inverter to the second inverter via a separate synchronization line. A third pulse-width modulated control signal having a third signal parameter is modulated by the second inverter. The third signal parameter is determined based on the first signal parameter and a predeterminable synchronization parameter. The third pulse-width modulated control signal having the third signal parameter is output by the second inverter to the second electric machine. The first pulse-width modulated control signal and the third pulse-width modulated control signal have a phase relationship predeterminable by the predeterminable synchronization parameter.
-
公开(公告)号：US11716044B2
公开(公告)日：2023-08-01
申请号：US17637679
申请日：2019-09-02
发明人： Fumio Watanabe
CPC分类号： H02P27/085 , H02P23/22 , H02P2205/03
摘要： A power conversion device includes an inverter, a current detector, a frequency analysis processor, a storage, a determination unit, a reference rotational rate change unit, and a rate controller. The determination unit determines a frequency at which a signal component having a magnitude exceeding a prescribed value has been detected among frequency components of a load current, generates restriction information for excluding a reference rotational rate for a rotational rate corresponding to the detected frequency based on a determination result after the determination, and causes the storage to store the generated restriction information. The reference rotational rate change unit changes a reference rotational rate of an electric motor so that mechanical resonance of the detected frequency is avoided based on the stored restriction information. The rate controller controls a rotational rate of the inverter using the changed reference rotational rate. The electric motor is driven at the controlled rotational rate.
-
公开(公告)号：US20230238909A1
公开(公告)日：2023-07-27
申请号：US18128885
申请日：2023-03-30
发明人： Stefan Baeurle
IPC分类号： H02P27/08
CPC分类号： H02P27/085
摘要： A switch controller coupled to control a transistor. The switch controller comprising an interface coupled to receive a command signal in response to an event sensed in a control system. The command signal is representative of a first command to control the transistor with a first drive strength or a second command to control the transistor with a second drive strength. The switch controller is coupled to adjust a fall time or a rise time, or to adjust both the fall time and the rise time, of a voltage across the transistor in response to the command signal. The fall time or the rise time, or both the fall time and the rise time in response to the second command is shorter than the fall time or the rise time, or both the fall time and the rise time in response to the first command.
-
公开(公告)号：US11703261B2
公开(公告)日：2023-07-18
申请号：US17360012
申请日：2021-06-28
CPC分类号： F25B49/025 , H02M5/4585 , H02P27/085 , F25B2500/13 , F25B2600/024 , F25B2600/11 , H03K7/08
摘要： A system includes an electronic power converter and a controller. The electronic power converter supplies power to one or more motor drives of an HVAC system. The controller obtains a plurality of pulse width modulation (PWM) algorithms. Each PWM algorithm has an associated spectrum of frequencies. The controller further determines one or more resonance frequencies associated with the HVAC system. The controller also selects a first PWM algorithm from the plurality of PWM algorithms wherein the spectrum of frequencies of the first PWM algorithm lacks frequency peaks that overlap with the one or more resonance frequencies associated with the HVAC system. The controller further operates the electronic power converter according to the first PWM algorithm.
-
127.发明公开公开(公告)号：US20230208340A1
公开(公告)日：2023-06-29
申请号：US17927383
申请日：2021-05-18
发明人： Andreas Humbert
CPC分类号： H02P27/14 , H02P27/085 , H02P21/05
摘要： A method is provided for operating a multi-phase inverter connected to an electric machine using a control device, wherein the inverter comprises a plurality of switch devices and the control device controls the inverter to adjust a control variable by means of space vector modulation. The method includes providing a number of possible space vectors for representing the control variable according to a number of phases of the inverter. The method further includes assigning each possible space vector a disturbance variable in the electric machine occurring in a switching state of the switch devices of the inverter described by the respective space vector. The method further includes selecting one or more control space vectors according to the control variable from the number of possible space vectors for representing the control variable. The selected one or more control space vectors represent control variable and have the respective smallest associated disturbance variable of the possible space vectors.
-
公开(公告)号：US20230208339A1
公开(公告)日：2023-06-29
申请号：US17926764
申请日：2020-09-10
IPC分类号： H02P27/08
CPC分类号： H02P27/085
摘要： A primary-side inverter is connected to three output terminals of six output terminals included in a motor with an open winding structure including windings of three independent phases and a secondary-side inverter is connected to the remaining three output terminals. Direct current power is supplied to the inverters, and a control device performs PWM control on the inverters by using a switching pattern in which the numbers of phases where each is turned on are equal, and in the switching pattern, ON of only an upper is continued in one phase from among the three phase outputs, OFF of only a lower is continued in another phase, and the upper and lower are alternately turned on and off such that mutual phases are opposite in the remaining one phase in one cycle of an electric angle of the motor over a plural carrier cycles in PWM control.
-
公开(公告)号：US20230188077A1
公开(公告)日：2023-06-15
申请号：US17924663
申请日：2021-05-06
申请人： Synapticon GmbH
CPC分类号： H02P27/085 , H02P23/14 , H02P23/0027
摘要： The invention relates to a motor control processing unit for a motor control device which comprises a voltage source inverter unit, configured to control the voltage source inverter unit to provide a motor voltage following a pulse-width modulation, PWM, scheme, wherein the motor control processing unit is configured to control the voltage source inverter unit according to a flat PWM scheme, which comprises a flat-bottom or flat-top PWM scheme, at least at some times in order to provide a precise motor control with minimized losses. The invention also relates to a corresponding method.
-
公开(公告)号：US20190173410A1
公开(公告)日：2019-06-06
申请号：US15832216
申请日：2017-12-05
发明人： Ismail Agirman
CPC分类号： H02P27/085 , H02M1/126 , H02M5/4585 , H02M7/219 , H02M7/5395 , H02M2001/0009 , H02M2001/0048 , H02P3/14 , H02P27/16 , H02P2209/13
摘要： A three-phase regenerative drive employing multiple converter pulse width modulation (PWM) strategies. The drive includes a three-phase converter having inputs for connection to a three-phase AC source, the three-phase converter having three phase legs, a DC bus operably connected to the three-phase converter wherein the three phase converter is configured to direct current from the three-phase AC source to the DC bus, and a three-phase inverter operably connected to the DC bus and a motor, the three phase inverter configured to draw current from the DC bus and provide three phase command signals to the motor. The three-phase converter employs a first PWM strategy to supply current to the DC bus, and the converter employs a second PWM strategy to supply current to the DC bus if a total current in the three phase legs exceeds a selected threshold.
-
-
-
-
-
-
-
-
-
搜索结果
568 条记录 (耗时 0.021 秒)
