公开(公告)号：US09923497B2

公开(公告)日：2018-03-20

申请号：US15088096

申请日：2016-03-31

Applicant: Johnson Controls Technology Company

Inventor： Zhiqiao Wu ,  Ivan Jadric

IPC: H02P27/00 ,  H02P6/18 ,  H02P6/185 ,  H02P23/14 ,  H02P25/024 ,  H02P25/03 ,  H02P21/14 ,  H02P1/52

CPC classification number: H02P6/181 ,  H02P1/52 ,  H02P6/18 ,  H02P6/185 ,  H02P21/141 ,  H02P23/14 ,  H02P25/024 ,  H02P25/03

Abstract: A chiller system includes a compressor configured to circulate a refrigerant between an evaporator and a condenser in a closed refrigerant loop and a synchronous motor configured to drive the compressor. The motor includes a stator winding and a rotor. The chiller system includes a controller configured to estimate a flux linkage of the rotor and generate a control signal for the motor based on the estimated flux linkage. Estimating the flux linkage includes applying a voltage of the stator winding to a transfer function having an error correction variable, using a first value of the error correction variable in the transfer function to obtain convergence of the flux linkage over an initial motor starting interval, and using a second value of the error correction variable after the initial motor starting interval to reduce an error in estimating the flux linkage.

公开(公告)号：US20160218654A1

公开(公告)日：2016-07-28

申请号：US15088095

申请日：2016-03-31

Applicant: Johnson Controls Technology Company

Inventor： Zhiqiao Wu ,  Ivan Jadric

IPC: H02P23/14

CPC classification number: H02P6/181 ,  H02P1/52 ,  H02P6/18 ,  H02P6/185 ,  H02P21/141 ,  H02P23/14 ,  H02P25/024 ,  H02P25/03

Abstract: A chiller system includes a compressor configured to circulate a refrigerant between an evaporator and a condenser in a closed refrigerant loop and a synchronous motor configured to drive the compressor. The motor includes a stator winding and a rotor. The chiller system includes a controller configured to estimate a flux linkage of the rotor and generate a control signal for the motor based on the estimated flux linkage. Estimating the flux linkage includes applying a voltage of the stator winding to a transfer function having an error correction variable, using a first value of the error correction variable in the transfer function to obtain convergence of the flux linkage over an initial motor starting interval, and using a second value of the error correction variable after the initial motor starting interval to reduce an error in estimating the flux linkage.

Abstract translation: 冷冻机系统包括压缩机，该压缩机构造成在闭合的制冷剂回路中的蒸发器和冷凝器之间循环制冷剂，以及构造成驱动压缩机的同步电动机。 电动机包括定子绕组和转子。 冷冻机系统包括控制器，该控制器被配置为基于估计的磁链来估计转子的磁链并且产生用于电动机的控制信号。 估计磁通链接包括使用传递函数中的误差校正变量的第一值将定子绕组的电压施加到具有误差校正变量的传递函数，以获得在初始电动机起动间隔上的磁链的会聚，以及 在初始电动机起动间隔之后使用误差校正变量的第二值，以减小估计磁链中的误差。

公开(公告)号：US10075117B2

公开(公告)日：2018-09-11

申请号：US15031785

申请日：2015-01-21

Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANY

Inventor： Zhiqiao Wu ,  John C. Hansen

IPC: H02P1/26 ,  H02P27/04 ,  H02M1/14 ,  H02M7/06 ,  F25B49/02 ,  H01F30/14 ,  H02P13/06

CPC classification number: H02P27/047 ,  F25B49/025 ,  H01F30/14 ,  H02M1/14 ,  H02M7/068 ,  H02P13/06

Abstract: A multi-pulse transformer with multiple taps provides a constant magnitude voltage output to a variable speed chiller's compressor motor over a range of input voltages. The 3-phase transformer includes primary windings and a plurality of secondary windings. The secondary windings are electromagnetically coupled with the associated primary winding. The primary windings include taps for receiving multiple input AC voltages and the secondary windings have a single output terminal for supplying a predetermined output voltage which, after rectification produces a DC multi-pulse waveform for powering a DC link of a variable speed drive. Alternatively the 3-phase transformer includes multiple taps on the secondary windings. Each of the primary windings has a terminal for receiving an input AC voltage. The taps of the secondary windings provide an output voltage that is converted to a multi-pulse waveform for powering a DC link of a variable speed drive.

公开(公告)号：US09590540B2

公开(公告)日：2017-03-07

申请号：US14649052

申请日：2014-01-28

Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANY

Inventor： Zhiqiao Wu ,  Ajit W. Kane ,  Shreesha Adiga-Manoor

IPC: G05B11/28 ,  H02P6/00 ,  H02M1/12 ,  F02M25/08

CPC classification number: H02P6/28 ,  F02M25/0836 ,  H02M1/12

Abstract: A system or method controlling a variable speed drive based on PWM techniques, wherein a first PWM method is used when the input current is less than a predetermined threshold value, for higher efficiency and lower total harmonic distortion (THD); and a second PWM method comprising a discontinuous modulation signal is used when the input current is greater than the predetermined threshold value for higher efficiency. By doing so, the maximum efficiency of VSD within the whole operation range can be achieved.

Abstract translation: 一种基于PWM技术控制变速驱动器的系统或方法，其中当输入电流小于预定阈值时使用第一PWM方法，以实现更高的效率和更低的总谐波失真（THD）; 并且当输入电流大于预定阈值以便更高效率时，使用包括不连续调制信号的第二PWM方法。 通过这样做，可以实现整个操作范围内VSD的最大效率。

公开(公告)号：US10707800B2

公开(公告)日：2020-07-07

申请号：US16126814

申请日：2018-09-10

Applicant: Johnson Controls Technology Company

Inventor： Zhiqiao Wu ,  John C. Hansen

IPC: H02P27/04 ,  H01F30/14 ,  H02M1/14 ,  H02M7/06 ,  F25B49/02 ,  H02P13/06

Abstract: A multi-pulse transformer with multiple taps provides a constant magnitude voltage output to a variable speed chiller's compressor motor over a range of input voltages. The 3-phase transformer includes primary windings and a plurality of secondary windings. The secondary windings are electromagnetically coupled with the associated primary winding. The primary windings include taps for receiving multiple input AC voltages and the secondary windings have a single output terminal for supplying a predetermined output voltage which, after rectification produces a DC multi-pulse waveform for powering a DC link of a variable speed drive. Alternatively the 3-phase transformer includes multiple taps on the secondary windings. Each of the primary windings has a terminal for receiving an input AC voltage. The taps of the secondary windings provide an output voltage that is converted to a multi-pulse waveform for powering a DC link of a variable speed drive.

公开(公告)号：US20190006976A1

公开(公告)日：2019-01-03

申请号：US16126814

申请日：2018-09-10

Applicant: Johnson Controls Technology Company

Inventor： Zhiqiao Wu ,  John C. Hansen

IPC: H02P27/04 ,  H01F30/14 ,  H02M1/14

CPC classification number: H02P27/047 ,  F25B49/025 ,  H01F30/14 ,  H02M1/14 ,  H02M7/068 ,  H02P13/06

Abstract: A multi-pulse transformer with multiple taps provides a constant magnitude voltage output to a variable speed chiller's compressor motor over a range of input voltages. The 3-phase transformer includes primary windings and a plurality of secondary windings. The secondary windings are electromagnetically coupled with the associated primary winding. The primary windings include taps for receiving multiple input AC voltages and the secondary windings have a single output terminal for supplying a predetermined output voltage which, after rectification produces a DC multi-pulse waveform for powering a DC link of a variable speed drive. Alternatively the 3-phase transformer includes multiple taps on the secondary windings. Each of the primary windings has a terminal for receiving an input AC voltage. The taps of the secondary windings provide an output voltage that is converted to a multi-pulse waveform for powering a DC link of a variable speed drive.

公开(公告)号：US09979332B2

公开(公告)日：2018-05-22

申请号：US15088095

申请日：2016-03-31

Applicant: Johnson Controls Technology Company

Inventor： Zhiqiao Wu ,  Ivan Jadric

IPC: H02P23/12 ,  H02P6/18 ,  H02P6/185 ,  H02P23/14 ,  H02P25/024 ,  H02P25/03 ,  H02P21/14 ,  H02P1/52

CPC classification number: H02P6/181 ,  H02P1/52 ,  H02P6/18 ,  H02P6/185 ,  H02P21/141 ,  H02P23/14 ,  H02P25/024 ,  H02P25/03

Abstract: A chiller system includes a compressor configured to circulate a refrigerant between an evaporator and a condenser in a closed refrigerant loop and a synchronous motor configured to drive the compressor. The motor includes a stator winding and a rotor. The chiller system includes a controller configured to estimate a flux linkage of the rotor and generate a control signal for the motor based on the estimated flux linkage. Estimating the flux linkage includes applying a voltage of the stator winding to a transfer function having an error correction variable, using a first value of the error correction variable in the transfer function to obtain convergence of the flux linkage over an initial motor starting interval, and using a second value of the error correction variable after the initial motor starting interval to reduce an error in estimating the flux linkage.

公开(公告)号：US09941825B2

公开(公告)日：2018-04-10

申请号：US15088092

申请日：2016-03-31

Applicant: Johnson Controls Technology Company

Inventor： Zhiqiao Wu ,  Ivan Jadric

IPC: H02P6/12 ,  H02P6/18 ,  H02P6/185 ,  H02P23/14 ,  H02P25/024 ,  H02P25/03 ,  H02P21/14 ,  H02P1/52

CPC classification number: H02P6/181 ,  H02P1/52 ,  H02P6/18 ,  H02P6/185 ,  H02P21/141 ,  H02P23/14 ,  H02P25/024 ,  H02P25/03

Abstract: A chiller system includes a compressor configured to circulate a refrigerant between an evaporator and a condenser in a closed refrigerant loop and a synchronous motor configured to drive the compressor. The motor includes a stator winding and a rotor. The chiller system includes a controller configured to estimate a flux linkage of the rotor and generate a control signal for the motor based on the estimated flux linkage. Estimating the flux linkage includes applying a voltage of the stator winding to a transfer function having an error correction variable, using a first value of the error correction variable in the transfer function to obtain convergence of the flux linkage over an initial motor starting interval, and using a second value of the error correction variable after the initial motor starting interval to reduce an error in estimating the flux linkage.

公开(公告)号：US20160218653A1

公开(公告)日：2016-07-28

申请号：US15088092

申请日：2016-03-31

Applicant: Johnson Controls Technology Company

Inventor： Zhiqiao Wu ,  Ivan Jadric

IPC: H02P23/14 ,  H02P1/52

CPC classification number: H02P6/181 ,  H02P1/52 ,  H02P6/18 ,  H02P6/185 ,  H02P21/141 ,  H02P23/14 ,  H02P25/024 ,  H02P25/03

Abstract: A chiller system includes a compressor configured to circulate a refrigerant between an evaporator and a condenser in a closed refrigerant loop and a synchronous motor configured to drive the compressor. The motor includes a stator winding and a rotor. The chiller system includes a controller configured to estimate a flux linkage of the rotor and generate a control signal for the motor based on the estimated flux linkage. Estimating the flux linkage includes applying a voltage of the stator winding to a transfer function having an error correction variable, using a first value of the error correction variable in the transfer function to obtain convergence of the flux linkage over an initial motor starting interval, and using a second value of the error correction variable after the initial motor starting interval to reduce an error in estimating the flux linkage.

Abstract translation: 冷冻机系统包括压缩机，该压缩机构造成在闭合的制冷剂回路中的蒸发器和冷凝器之间循环制冷剂，以及构造成驱动压缩机的同步电动机。 电动机包括定子绕组和转子。 冷冻机系统包括控制器，该控制器被配置为基于估计的磁链来估计转子的磁链并且产生用于电动机的控制信号。 估计磁通链接包括使用传递函数中的误差校正变量的第一值将定子绕组的电压施加到具有误差校正变量的传递函数，以获得在初始电动机起动间隔上的磁链的会聚，以及 在初始电动机起动间隔之后使用误差校正变量的第二值，以减小估计磁链中的误差。

公开(公告)号：US20160218651A1

公开(公告)日：2016-07-28

申请号：US15088096

申请日：2016-03-31

Applicant: Johnson Controls Technology Company

Inventor： Zhiqiao Wu ,  Ivan Jadric

IPC: H02P21/14

CPC classification number: H02P6/181 ,  H02P1/52 ,  H02P6/18 ,  H02P6/185 ,  H02P21/141 ,  H02P23/14 ,  H02P25/024 ,  H02P25/03

Abstract: A chiller system includes a compressor configured to circulate a refrigerant between an evaporator and a condenser in a closed refrigerant loop and a synchronous motor configured to drive the compressor. The motor includes a stator winding and a rotor. The chiller system includes a controller configured to estimate a flux linkage of the rotor and generate a control signal for the motor based on the estimated flux linkage. Estimating the flux linkage includes applying a voltage of the stator winding to a transfer function having an error correction variable, using a first value of the error correction variable in the transfer function to obtain convergence of the flux linkage over an initial motor starting interval, and using a second value of the error correction variable after the initial motor starting interval to reduce an error in estimating the flux linkage.

Abstract translation: 冷冻机系统包括压缩机，该压缩机构造成在闭合的制冷剂回路中的蒸发器和冷凝器之间循环制冷剂，以及构造成驱动压缩机的同步电动机。 电动机包括定子绕组和转子。 冷冻机系统包括控制器，该控制器被配置为基于估计的磁链来估计转子的磁链并且产生用于电动机的控制信号。 估计磁通链接包括使用传递函数中的误差校正变量的第一值将定子绕组的电压施加到具有误差校正变量的传递函数，以获得在初始电动机起动间隔上的磁链的会聚，以及 在初始电动机起动间隔之后使用误差校正变量的第二值，以减小估计磁链中的误差。