CN109802496B - Variable compensation topology mobile ICPT system with fault-tolerant switch - Google Patents

Abstract

The invention discloses a variable compensation topology mobile ICPT system with a fault-tolerant switch, comprising: a fault-tolerant switch X ₁ , a fault-tolerant switch X _rc1 , a fault-tolerant switch X _rc2 , a variable compensation topology switch _XL , a variable compensation topology switch X _CS , Variable compensation topology switch X _CP , coil M, capacitance C _S , resistance R, compensation inductance L _P , compensation capacitance C _P1 , compensation capacitance C _P2 and power supply AC, the compensation capacitance C _P1 , compensation inductance L _P , power supply AC, The fault _- tolerant switch X1 and the fault-tolerant switch _Xrc1 are connected in series at both ends of the primary side of the coil M in turn, the variable compensation topology switch X _CS is connected in parallel with the compensation capacitor C _P1 , and the variable compensation topology switch _XL is connected in parallel with the compensation inductance _LP , The fault-tolerant switch X _rc2 is connected in parallel with the fault-tolerant switch X ₁ , and the series circuit composed of the compensation capacitor C _P2 and the variable compensation topology switch X _CP is connected with the compensation capacitor C _P1 , the compensation inductance _LP , the power supply AC, the fault-tolerant switch X ₁ and the fault-tolerant switch X 1 . A series circuit composed of switches X _rc1 is connected in parallel, and the capacitor C _S and the resistor R are connected in series at both ends of the secondary side of the coil M. In order to achieve the advantages of ensuring the reliability of the system.

Description

Variable Compensation Topology Mobile ICPT System with Fault Tolerant Switches

technical field

The invention relates to the field of non-contact traction power supply, in particular to a variable compensation topology mobile ICPT system with a fault-tolerant switch.

Background technique

At present, there are two structures of the energy supply coil of the non-contact traction power supply system: single-rail type and segmented type. The single-rail type coil has a simple structure, but there are many problems such as low utilization rate, large coil impedance, and electromagnetic compatibility. Therefore, in practical applications, segmented coils are the most ideal structure, which can effectively solve electromagnetic compatibility and utilization. low problem. The primary sub-coil of the traditional segmented ICPT system is compensated by a single compensation structure. When there are loads with different characteristics or the loads are in different motion states, a single compensation structure cannot meet the actual application requirements. In addition, a single switch The turn-on and turn-off control of the access and cut-out of the primary sub-coil cannot guarantee the reliability of the system.

SUMMARY OF THE INVENTION

The purpose of the present invention is, in view of the above problems, to propose a variable compensation topology mobile ICPT system with a fault-tolerant switch, so as to realize the advantage of ensuring the reliability requirements of the system.

For achieving the above object, the technical scheme adopted in the present invention is:

A variable compensation topology mobile ICPT system with fault-tolerant switches, comprising: a fault-tolerant switch X ₁ , a fault-tolerant switch X _rc1 , a fault-tolerant switch X _rc2 , a variable compensation topology switch _XL , a variable compensation topology switch X _CS , and a variable compensation topology switch X _CP , coil M, capacitance C _S , resistance R, compensation inductance LP , compensation capacitance C _P1 , compensation capacitance C _P2 and power supply AC, said compensation capacitance C _P1 , compensation inductance _{L P ,} power supply AC, fault tolerant switch X ₁ and the fault-tolerant switch X _rc1 are sequentially connected in series at both ends of the primary side of the coil M, the variable compensation topology switch X _CS is connected in parallel with the compensation capacitor C _P1 , the variable compensation topology switch _XL is connected in parallel with the compensation inductance LP, and the fault-tolerant switch X CS is connected in parallel with the compensation capacitor C _P1 . X _rc2 is connected in parallel with the fault-tolerant switch X ₁ , and the series circuit composed of the compensation capacitor C _P2 and the variable compensation topology switch X _CP is composed of the compensation capacitor C _P1 , the compensation inductance _LP , the power supply AC, the fault-tolerant switch X ₁ and the fault-tolerant switch X _rc1 The series circuits are connected in parallel, and the capacitor C _S and the resistor R are connected in series at both ends of the secondary side of the coil M.

Optionally, the fault-tolerant switch X ₁ and the fault-tolerant switch X _rc2 are in a normally open state, and the fault-tolerant switch X _rc1 is in a normally-closed state. When the fault-tolerant switch X ₁ cannot be normally turned on, the fault _- tolerant switch X _rc2 is closed. The fault tolerant switch X _rc1 is disconnected when the switch X _rc2 cannot be turned off normally.

Optionally, different compensation networks are selected by performing on or off control of the variable compensation topology switch _XL , the variable compensation topology switch X _CS and the variable compensation topology switch X _CP .

Optionally, it also includes a controller, the controller is respectively connected with the fault-tolerant switch X ₁ , the fault-tolerant switch X _rc1 , the fault-tolerant switch X _rc2 , the variable compensation topology switch _XL , the variable compensation topology switch X _CS , and the variable compensation topology switch X _CP It is electrically connected to control the turn-on and turn-off of the fault-tolerant switch X ₁ , the fault-tolerant switch X _rc1 , the fault-tolerant switch X _rc2 , the variable compensation topology switch _XL , the variable compensation topology switch X _CS , and the variable compensation topology switch X _CP .

Optionally, the controller adopts a sliding mode variable structure controller.

Optionally, the controller adopts a sliding mode variable structure controller based on a combined reaching law.

The technical scheme of the present invention has the following beneficial effects:

In the technical scheme of the present invention, by adding a fault-tolerant switch group, when a certain switch fails to work normally, the normal operation of the system is not affected. Switching between different compensation topologies is realized by switching on and off, so as to obtain the best resonance compensation effect, thus achieving the purpose of ensuring the reliability of the system. Furthermore, the sliding mode variable structure controller based on the combined reaching law can effectively alleviate the chattering phenomenon during the switching process.

The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.

Description of drawings

FIG. 1 is a schematic diagram of the principle of a variable compensation topology mobile ICPT system with a fault-tolerant switch according to an embodiment of the present invention.

Detailed ways

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

As shown in FIG. 1 , a variable compensation topology mobile ICPT system with fault tolerant switches includes a fault tolerant switch X ₁ , a fault tolerant switch X _rc1 , a fault tolerant switch X _rc2 , a variable compensation topology switch _XL , and a variable compensation topology switch X _CS , variable compensation topology switch X _CP , coil M, capacitance C _S , resistance R, compensation inductance LP , compensation capacitance C _P1 , compensation capacitance C _P2 and power supply AC, the compensation capacitance C _P1 , compensation inductance _{L P ,} power supply AC, fault _- tolerant switch X1 and fault-tolerant switch _Xrc1 are connected in series at both ends of the primary side of coil M in sequence, the variable compensation topology switch X _CS is connected in parallel with the compensation capacitor C _P1 , and the variable compensation topology switch _XL is connected with the compensation inductance L _P In parallel, the fault-tolerant switch X _rc2 is connected in parallel with the fault-tolerant switch X ₁ , and the series circuit composed of the compensation capacitor C _P2 and the variable compensation topology switch X _CP is connected with the compensation capacitor C _P1 , the compensation inductance _LP , the power supply AC, and the fault-tolerant switch X ₁ In parallel with the series circuit formed by the fault-tolerant switch X _rc1 , the capacitor C _S and the resistor R are connected in series at both ends of the secondary side of the coil M.

A variable compensation topology mobile ICPT system with fault tolerant switches, including a fault tolerant switch part, a variable compensation topology part and a sliding mode variable structure controller part, adding a fault tolerant switch can improve the reliability of the system. The compensation network with variable topology can meet the requirements of load resonance compensation with different characteristics or under different operating states. By designing a sliding mode variable structure controller based on the combined reaching law, the on and off switching of the switch is controlled. , to slow down the system instability caused by chattering during the switching process.

Optionally, the fault-tolerant switch X ₁ and the fault-tolerant switch X _rc2 are in a normally open state, and the fault-tolerant switch X _rc1 is in a normally-closed state. When the fault-tolerant switch X ₁ cannot be normally turned on, the fault _- tolerant switch X _rc2 is closed. The fault tolerant switch X _rc1 is disconnected when the switch X _rc2 cannot be turned off normally.

The fault-tolerant switch X ₁ and the fault-tolerant switch X _rc2 are in the normally open state, and the fault-tolerant switch X _rc1 is in the normally closed state. When X ₁ cannot be normally turned on, X _rc2 can be closed, and when X ₁ or X _rc2 cannot be normally turned off, it can be disconnected _Xrc1 . Thereby improving the reliability of the system.

Optionally, different compensation networks are selected by performing on or off control of the variable compensation topology switch _XL , the variable compensation topology switch X _CS and the variable compensation topology switch X _CP .

Optionally, it also includes a controller, the controller is respectively connected with the fault-tolerant switch X ₁ , the fault-tolerant switch X _rc1 , the fault-tolerant switch X _rc2 , the variable compensation topology switch _XL , the variable compensation topology switch X _CS , and the variable compensation topology switch X _CP It is electrically connected to control the turn-on and turn-off of the fault-tolerant switch X ₁ , the fault-tolerant switch X _rc1 , the fault-tolerant switch X _rc2 , the variable compensation topology switch _XL , the variable compensation topology switch X _CS , and the variable compensation topology switch X _CP .

A variable compensation topology switch _XL and a variable compensation topology switch X _CS are connected in parallel at both ends of the primary side compensation inductance _{LP and the compensation capacitor C P1 respectively} , and the variable compensation topology switch X _CP is connected in series on the branch of the parallel compensation capacitor C _P2 . Compensation network with variable topology realized by switching on and off.

Optionally, the controller adopts a sliding mode variable structure controller.

Optionally, the controller adopts a sliding mode variable structure controller based on a combined reaching law. By designing a sliding-mode variable structure controller based on the combined reaching law, the on-off and on-off of the switch are switched to reduce the system instability caused by chattering during the switching process.

By adding fault-tolerant switches on the basis of the traditional ICPT system topology, the reliability of the system is improved. In addition, when there are loads with different characteristics or the loads are in different motion states, a single compensation structure cannot meet the actual application requirements. The switch can realize the use of different compensation structures for different primary sub-coils to meet the resonance compensation of different loads in different motion states. By designing a sliding-mode variable structure controller based on the combined reaching law, the on-off and on-off of the switch are switched to reduce the system instability caused by chattering during the switching process.

Finally, it should be noted that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the The technical solutions described in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (4)

1. A variable compensation topology mobile ICPT system with a fault-tolerant switch, characterized in that it includes a fault-tolerant switch X ₁ , a fault-tolerant switch X _rc1 , a fault-tolerant switch X _rc2 , a variable compensation topology switch _XL , and a variable compensation topology switch X _CS , variable compensation topology switch X _CP , coil M, capacitance C _S , resistance R, compensation inductance LP , compensation capacitance C _P1 , compensation capacitance C _P2 and power supply AC, the compensation capacitance C _P1 , compensation inductance _{L P ,} power supply AC, fault _- tolerant switch X1 and fault-tolerant switch _Xrc1 are connected in series at both ends of the primary side of coil M in sequence, the variable compensation topology switch X _CS is connected in parallel with the compensation capacitor C _P1 , and the variable compensation topology switch _XL is connected with the compensation inductance L _P In parallel, the fault-tolerant switch X _rc2 is connected in parallel with the fault-tolerant switch X ₁ , and the series circuit composed of the compensation capacitor C _P2 and the variable compensation topology switch X _CP is connected with the compensation capacitor C _P1 , the compensation inductance _LP , the power supply AC, and the fault-tolerant switch X ₁ It is connected in parallel with the series circuit formed by the fault-tolerant switch X _rc1 , and the capacitor C _S and the resistance R are connected in series at both ends of the secondary side of the coil M; The fault-tolerant switch X ₁ and the fault-tolerant switch X _rc2 are in the normally open state, and the fault-tolerant switch X _rc1 is in the normally-closed state. When the fault-tolerant switch X ₁ cannot be normally turned on, the fault-tolerant switch X _rc2 is closed. When the fault-tolerant switch X ₁ or the fault-tolerant switch X _rc2 cannot be Turn off fault-tolerant switch X _rc1 during normal shutdown; Different compensation networks are selected by conducting on or off control of the variable compensation topology switch _XL , the variable compensation topology switch X _CS and the variable compensation topology switch X _CP . 2. The variable compensation topology mobile ICPT system with a fault-tolerant switch according to claim 1, further comprising a controller, the controller is respectively connected with the fault-tolerant switch X ₁ , the fault-tolerant switch X _rc1 , and the fault-tolerant switch X _rc2 , the variable compensation topology switch _XL , the variable compensation topology switch X _CS , and the variable compensation topology switch X _CP are electrically connected to control the fault tolerant switch X ₁ , the fault tolerant switch X _rc1 , the fault tolerant switch X _rc2 , the variable compensation topology switch _XL , and the The turn-on and turn-off of the compensation topology switch X _CS and the compensation topology switch X _CP are changed. 3 . The variable compensation topology mobile ICPT system with fault-tolerant switches according to claim 2 , wherein the controller adopts a sliding mode variable structure controller. 4 . 4 . The variable compensation topology mobile ICPT system with fault-tolerant switch according to claim 2 , wherein the controller adopts a sliding mode variable structure controller based on the combined reaching law. 5 .

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