公开(公告)号：US20190186480A1

公开(公告)日：2019-06-20

申请号：US15844569

申请日：2017-12-17

Applicant: Microchip Technology Incorporated

Inventor： Prasad Kulkarni ,  Debraj Deb ,  Ramesh Kankanala

IPC: F04B39/00 ,  H02P21/18 ,  F04B35/04

CPC classification number: F04B39/0044 ,  F04B35/04 ,  F04B2203/0202 ,  F04B2203/0209 ,  F04B2207/03 ,  F04C2/00 ,  H02P21/04 ,  H02P21/05 ,  H02P21/06 ,  H02P21/18 ,  H02P21/22

Abstract: Embodiments of the present disclosure include a motor controller with a processor and a machine readable medium. The medium includes instructions that, when loaded and executed by the processor, cause the processor to receive an estimated or sensed speed of a motor, extract a mechanical frequency component from the estimated or sensed speed, transform the mechanical frequency into direct quadrature (DQ) domain at the mechanical frequency, control the mechanical frequency to zero, and generate a dampening signal for torque based upon the controlled mechanical frequency.

公开(公告)号：US11499537B2

公开(公告)日：2022-11-15

申请号：US15844569

申请日：2017-12-17

Applicant: Microchip Technology Incorporated

Inventor： Prasad Kulkarni ,  Debraj Deb ,  Ramesh Kankanala

IPC: F04B39/00 ,  H02P21/04 ,  H02P21/05 ,  H02P21/22 ,  H02P21/06 ,  F04C2/00 ,  H02P21/18 ,  F04B35/04

Abstract: Embodiments of the present disclosure include a motor controller with a processor and a machine readable medium. The medium includes instructions that, when loaded and executed by the processor, cause the processor to receive an estimated or sensed speed of a motor, extract a mechanical frequency component from the estimated or sensed speed, transform the mechanical frequency into direct quadrature (DQ) domain at the mechanical frequency, control the mechanical frequency to zero, and generate a dampening signal for torque based upon the controlled mechanical frequency.

公开(公告)号：US10008967B2

公开(公告)日：2018-06-26

申请号：US15333249

申请日：2016-10-25

Applicant: Microchip Technology Incorporated

Inventor： Prasad Kulkarni ,  Ramesh Kankanala ,  Debraj Deb

IPC: H02P21/00 ,  H02P21/14

CPC classification number: H02P21/141 ,  H02P21/0089

Abstract: A closed loop flux weakening method and apparatus are provided. The closed loop flux weakening apparatus may include a difference circuit that obtains a difference between a q-axis reference voltage and a q-axis voltage, a controller that converts the difference between the q-axis reference voltage and the q-axis voltage into a d-axis current of a stator of the motor, and a summation circuit that obtains a d-axis reference current by adding the d-axis current of the stator of the motor and a feed forward d-axis current of the stator of the motor.

公开(公告)号：US20180115267A1

公开(公告)日：2018-04-26

申请号：US15333249

申请日：2016-10-25

Applicant: Microchip Technology Incorporated

Inventor： Prasad Kulkarni ,  Ramesh Kankanala ,  Debraj Deb

IPC: H02P21/14 ,  H02P21/00

CPC classification number: H02P21/141 ,  H02P21/0089

Abstract: A closed loop flux weakening method and apparatus are provided. The closed loop flux weakening apparatus may include a difference circuit that obtains a difference between a q-axis reference voltage and a q-axis voltage, a controller that converts the difference between the q-axis reference voltage and the q-axis voltage into a d-axis current of a stator of the motor, and a summation circuit that obtains a d-axis reference current by adding the d-axis current of the stator of the motor and a feed forward d-axis current of the stator of the motor.

公开(公告)号：US09379621B1

公开(公告)日：2016-06-28

申请号：US14607684

申请日：2015-01-28

Applicant: Microchip Technology Incorporated

Inventor： Sabarish Kalyanaranman ,  Ramesh Kankanala

IPC: G05F1/00 ,  H02M3/335

CPC classification number: H02M3/33507 ,  H02M3/157 ,  H02M3/33515 ,  H02M2001/0012

Abstract: A mixed signal integrated circuit, such as a typical microcontroller or digital signal controller (DSC), provides digital slope compensation for implementing peak current control in switched mode power supply (SMPS) systems. Simple and fast software calculations using digital values already measured require a single multiply and accumulate instruction (MAC) to determine the slope compensated peak current reference signal, ICMP, that will be compared with the inductor/switch current to control power switch. Doing all calculations in digital form using a software program also allows easy configurability for many different applications, setting slope values by writing to a register(s) in a memory map, and to allow SMPS applications to be dynamically adaptable or configurable on the fly. The entire slope compensation function and PWM control may be self-contained within the microcontroller or DSC and without the need of external components.

Abstract translation: 诸如典型的微控制器或数字信号控制器（DSC）的混合信号集成电路提供用于在开关模式电源（SMPS）系统中实现峰值电流控制的数字斜率补偿。 使用已经测量的数字值的简单快速的软件计算需要单个乘法和累加指令（MAC）来确定将与电感/开关电流相比较以控制电源开关的斜率补偿峰值电流参考信号ICMP。 使用软件程序以数字形式进行所有计算也可以为许多不同的应用程序轻松配置，通过写入存储器映射中的寄存器来设置斜率值，并允许SMPS应用程序动态适应或可配置。 整个斜率补偿功能和PWM控制可以独立于微控制器或DSC内，无需外部元件。