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Switch reluctance machine driving circuit

A technology of switched reluctance motor and drive circuit, which is applied in the direction of electronic commutation motor control, single motor speed/torque control, electrical components, etc.

Inactive Publication Date: 2003-04-23
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the special layout of the circuit components of the switched reluctance motor, an integrated power module such as an intelligent power module is used; especially due to the use of freewheeling diodes, it is quite difficult to miniaturize the circuit design

Method used

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  • Switch reluctance machine driving circuit
  • Switch reluctance machine driving circuit
  • Switch reluctance machine driving circuit

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Experimental program
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Embodiment Construction

[0017] refer to Figure 5 As shown, the switched reluctance motor drive circuit of the present invention is mainly composed of the following parts: the DC capacitor C that filters the input power supply and provides DC voltage to the motor; N motor coils La, Lb, Lc that are connected in parallel according to N phases; Upper switches Q1a, Q1b, Q1c and lower switches Q2a, Q2b, Q2c above and below the motor coils La, Lb, Lc; auxiliary coil L wound on the motor stator and matched with the motor coil; connected in series above and below the auxiliary coil L Diodes D1 and D2; capacitor C1 connected between the auxiliary coil L and the lower diode D2; the opening switch element S connected in parallel with the capacitor C1 and the lower diode D2; a control circuit 10 for controlling the switching element S to be turned on and off . like Image 6 As shown, the control circuit 10 respectively inputs the negative terminal and the positive terminal of the comparator COMP after the volt...

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PUM

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Abstract

The switch reluctance machine driving circuit mainly includes D.C capacitor C capabel of filtering inputted power supply and providing D.C voltage for electric machine; N electric machine coils of La, Lb and Lc mutually parallelly-connected according to N phases; upper and lower position switches respectively series-connected with upper portion and lower portion of the electric machine coil; auxiliary coil L coiled on the stator of electric machine and matched with electric machine coil; diodes of D1 and D2 series-connected with upper portion and lower portion of auxiliary coil L respectively; capacitor C1 connected between auxiliary coil L and lower diode D2, switch element S parallelly-connected with capacitor C1 and lower diode D2 and control circuit for controlling switching-on and switching-off the switch elements S according to the charged voltage of capacitor C1.

Description

1. Technical field: [0001] The invention relates to a driving circuit of a switched reluctance motor, in particular to a driving circuit of a switched reluctance motor which is wound with an auxiliary coil on the stator of the motor and can use its freewheeling current as a control power supply. 2. Background technology: [0002] figure 2 It is a driving circuit diagram of a switched reluctance motor with a 6 / 4 structure. Its components include: a DC capacitor C that filters the input power and supplies a DC voltage to the motor; N motor windings La, Lb, and Lc; upper switches Q1a, Q1b, Q1c and lower switches Q2a, Q2b, Q2c connected in series above and below the motor windings La, Lb, Lc; freewheeling diodes FRD3, FRD5 connected between the emitters of the upper switches and lower switches , FRD7; freewheeling diodes FRD2, FR24, and FRD6 connected between the collectors of the upper switch and the lower switch. [0003] figure 1 The shown 6 / 4 switched reluctance motor us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/00
Inventor 吴在胤
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD