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Method for controlling electronically commutated polyphase DC motor

A technology of DC motor and control electronics, which is applied in the direction of electronic commutation motor control, electronic commutator, control system, etc., can solve different problems and achieve the effect of small torque fluctuation

Inactive Publication Date: 2014-04-23
CONTINENTAL TEVES AG & CO OHG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commutation shapes other than the sinusoidal commutation cannot be implemented with this known method

Method used

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  • Method for controlling electronically commutated polyphase DC motor
  • Method for controlling electronically commutated polyphase DC motor
  • Method for controlling electronically commutated polyphase DC motor

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0035] according to figure 1 A brushless DC motor (BLDC motor) 1 is driven by a power output stage 4 , which is controlled by a logic circuit 10 via a half-bridge drive circuit 5 . The logic circuit 10 includes a plurality of functional blocks 11 to 23 , some of which are configured by the control unit 30 to activate the BLDC motor 1 .

[0036] Furthermore, the BLDC motor 1 has a quadrature sensor as the position sensor 3 , which is usually designed as a Hall sensor device or an MR (magnetic resonance magnetic resonance) angle sensor device for detecting the rotor position of the BLDC motor 1 . This quadrature sensor 3 is designed as an incremental sensor and generates an A signal and a B signal, which are supplied to the logic circuit 10 .

[0037] At startup (startup) BLDC motor 1 according to figure 1 Configuration data A to I are generated by the control unit 30 and are supplied to several of the function blocks 11 to 23 for configuring the logic circuit 10 , as will be ...

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PUM

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Abstract

The invention relates to a method for controlling an electronically commutated polyphase DC motor (BLDC motor) (1) with a pole number>= 2 and with a winding system (2) having a plurality of winding phases, in particular three winding phases. The DC motor comprises a rotor, a stator and a position sensor (3) detecting the position of the rotor and a logic circuit (10) for generating the phase voltages of the winding system (2) depending on the electrical phase angle of the rotor. According to the invention, provision is made for the logic circuit (10) to have a storage means (11) with a lookup table, in which the associated drive values depending on the electrical phase angle of the rotor for generating phase voltages (VU, VV, VW) for the winding system (2) are stored so as to implement commutation with block-shaped, trapezoidal, sinusoidal or sine-based signal forms or with signal forms which are suitable for commutation. A control unit (30) for producing configuration data for the logic circuit (10) is provided, wherein the configuration data determine at least the commutation form and, depending on the determined commutation form, the associated drive values depending on the electrical phase angle of the rotor determined by means of the quadrature sensor (3) are supplied from the storage means (11) to a PWM generator (15); for generating PWM control signals (VU, VV, VW), with which the phase currents in the winding system (2) can be controlled. In addition, an apparatus for implementing the method according to the invention is provided.

Description

technical field [0001] The invention relates to a method according to the preamble of claim 1 for controlling an electronically commutated / rectified polyphase direct current motor (BLDC motor) having a number of poles ≥ 2 and having polyphase, Especially for the three-phase winding system, the DC motor includes a rotor, a stator and a quadrature sensor / 90° phase shift sensor (Quadratur-Sensor) that detects the position of the rotor. Furthermore, the invention relates to a device according to the preamble of claim 13 for carrying out the method according to the invention. Background technique [0002] Such electronically commutated direct current motors (BLDC motors) are generally known and comprise, for example, a rotor designed as a permanent magnet, which is driven by a rotationally moving excitation field. The excitation field is produced, for example, by a three-phase winding system in that the winding phases of the three-phase winding system are energized by block-shap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/14
CPCH02P6/145H02P6/16H02P6/085H02P6/153
Inventor A·海泽R·哈特曼F·米歇尔C·比特施B·瓦姆比尔-莱丁P·斯陶德T·考夫曼A·保朔
Owner CONTINENTAL TEVES AG & CO OHG