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Method and device for calibrating regulator of electric machine

A technology of regulators and equipment, applied in the direction of motors, instruments, power management, etc., can solve problems such as existence and high cost of torque sensors

Pending Publication Date: 2022-07-08
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Torque sensors are costly and therefore do not exist as standard in many applications

Method used

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  • Method and device for calibrating regulator of electric machine
  • Method and device for calibrating regulator of electric machine
  • Method and device for calibrating regulator of electric machine

Examples

Experimental program
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Embodiment Construction

[0050] figure 1 Apparatus 100 for calibrating regulator 110 of motor 120 is shown. The device includes a sensor 130 , preferably a mechanical sensor with a mechanically rigid or secure direct or indirect connection to the motor 120 . The device also includes a circuit carrier 150 , wherein the circuit carrier has a test signal generator 160 and a computing unit 170 . The regulator 110 is preferably integrated in the inverter 140 , wherein the inverter includes power electronics 145 , preferably a B6 bridge, for feeding the connectable machine 120 from the battery 155 . Furthermore, in figure 1 An electric drive system 200 with a device 100 and a motor 120 is shown in . Based on the first test signal S_1 and the plurality of test signals S_Test_i, the power electronics 145 of the inverter 140 are actuated to calibrate the regulator 110 of the electric machine 120 . The response signal S_Antw_i is detected by means of the sensor 130 . After the calibration signal S_kal ha...

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Abstract

A method (400) for calibrating a regulator of an electric machine (120). The method comprises the steps of specifying (410) a first signal (S1) in order to generate a sinusoidal phase current for energizing a winding of the electric machine (120), superimposing (420) the first signal (S1) with a test signal (STesti) in order to generate a harmonic oscillation having a predetermined excitation amplitude and / or a phase position relative to the phase current, said harmonic oscillation being superimposed with the phase current, a response signal (SAntwi) resulting from the superposition of the phase current and the harmonic oscillation is detected (430) by means of the sensor (130), a calibration signal (Skal) for generating a harmonic oscillation having a predetermined excitation amplitude and a phase position with respect to the phase current is determined (450) as a function of a determined minimum value of the response surface (AAntw), and a regulator (110) of the electric machine (120) is operated (460) as a function of the determined minimum value.

Description

technical field [0001] The present invention relates to a method and apparatus for calibrating a regulator of an electric machine. Furthermore, the invention relates to an electric drive system with a corresponding device and a vehicle with an electric drive system as well as to a computer program and a computer-readable storage medium. Background technique [0002] In order to generate the desired torque by means of a suitable combination of direct torque and reluctance torque, induction machines, in particular permanent magnet synchronous machines (PSM) with embedded magnets, are operated. In the case of a field-oriented regulator, the direct torque and the reluctance torque are selected by means of the corresponding selection of the d and q current operating points (id, iq) in the rotor-fixed coordinate system. During operation, the motor, in addition to outputting a uniform average torque, also produces harmonics of the torque, for example due to non-ideal sinusoidal ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
CPCH02P21/0025H02P21/05Y02T10/64H02P23/04H02P23/14
Inventor M·赫希李威龙S·保卢斯
Owner ROBERT BOSCH GMBH
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