Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for sensorless control of a separately excited synchronous machine

A synchronous motor and external excitation technology, applied in the direction of electrical devices, electrical devices, electromagnetic measurement devices, etc., can solve the problems of increasing the total system complexity, reducing reliability, increasing the cost of sensor installation space, and saving installation space. , cost saving, high precision effect

Active Publication Date: 2015-02-11
VTESCO TECH GMBH
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But such techniques increase the complexity of the overall system and reduce its reliability
Synchronous motors therefore have to have sensors integrated into the rotating part or mechanically coupled thereto, which leads to increased costs and requires additional installation space for the sensors
The replacement of such sensors is also associated with significant costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for sensorless control of a separately excited synchronous machine
  • Method and device for sensorless control of a separately excited synchronous machine
  • Method and device for sensorless control of a separately excited synchronous machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] figure 1 A flow chart of a method 1 for sensorless regulation of an externally excited synchronous machine according to one embodiment of the invention is shown.

[0044] Here, Method 1 has the following steps. First, the S1 test signal M is fed into the characteristic variable of the current driving the rotor. Next, the characteristic parameters of the current driving the rotor of S2 are measured on the axes describing the coordinate system of the synchronous machine. From the measured characteristic quantities of the current driving the rotor and the time-delayed test signal, an error signal is then determined S3 by correlation, and if the error signal has a value S4 not equal to zero, as a reaction to this error signal the desired the rotor angle. Here, according to figure 1 The test signal M of the embodiment is a PRBS signal.

[0045] exist figure 1 In the embodiment, the coordinate system representing the synchronous motor is the dq coordinate system, which ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method (1) for sensorless control of a separately excited synchronous machine (11) which has a rotor and a device (10) for performing the method (1). The method (1) comprises the following steps: feeding (S1) a test signal (M) on a parameter of an electrical current driving the rotor; measuring (S2) the parameter of the electrical current driving the rotor on an axis of the coordinate system describing the synchronous machine (11); determining (S3) an error signal (rho(T)) by correlating the measured parameter (x) of the electrical current driving the rotor with a temporally delayed test signal (m) which is determined from the fed test signal (M); adjusting (S4) a rotor angle (phi) as a reaction to the error signal (rho(T)) if the error signal (rho(T)) has a value not equal to zero.

Description

technical field [0001] The invention relates to a method and a device for sensorless regulation of an externally excited synchronous machine, in particular an externally driven inverter-controlled synchronous machine, for example a synchronous machine in a vehicle. Background technique [0002] A conventional synchronous machine has a pole wheel excited with direct current, a rotor and a stator with rotating current windings. Synchronous motors are used as motors with a constant rotational speed or as phase shifters. It is also an important motor for generating electrical energy. A distinction is made here between permanently excited and externally excited synchronous machines, which have to be continuously supplied with excitation current. Depending on the type of actuator, the excitation current can here be a direct current or a rotational current. [0003] In order to regulate the phase currents such that the desired torque is generated with the best possible efficienc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/18H02P25/02
CPCB60L2240/423B60L15/20H02P25/023B60L11/1803B60L2250/10Y02T10/7005H02P25/021H02P23/0081H02P6/183Y02T10/7275Y02T10/644B60L3/0061B60L2220/14B60L50/51Y02T10/72H02P23/26H02P25/024H02P25/03Y02T10/64Y02T10/70G01B7/004G01B7/30G01R23/02
Inventor T.鲍曼
Owner VTESCO TECH GMBH