KR20000008221A - Optimization device and method of input power supply of motor for electric motor vehicle - Google Patents
Optimization device and method of input power supply of motor for electric motor vehicle Download PDFInfo
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- KR20000008221A KR20000008221A KR1019980027947A KR19980027947A KR20000008221A KR 20000008221 A KR20000008221 A KR 20000008221A KR 1019980027947 A KR1019980027947 A KR 1019980027947A KR 19980027947 A KR19980027947 A KR 19980027947A KR 20000008221 A KR20000008221 A KR 20000008221A
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- 238000005457 optimization Methods 0.000 title abstract description 7
- 238000000034 method Methods 0.000 title description 10
- 230000001133 acceleration Effects 0.000 claims abstract description 12
- 238000010586 diagram Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/10—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for automatic control superimposed on human control to limit the acceleration of the vehicle, e.g. to prevent excessive motor current
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/12—Speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/549—Current
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/91—Electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Description
본 발명은 전기자동차에 관한 것으로, 특히 전기자동차의 모터구동부에서 제공되는 모터의 동작속도와 구동력을 메인제어부에서 센싱받아, 메인배터리팩과 인버터의 제어부에 입력하여 모터의 동작상태에 따라 전력을 공급하여 인버터 및 모터의 효율을 증가시킬 수 있도록 하는 전기자동차용 모터의 입력전원 최적화장치 및 방법에 관한 것이다.The present invention relates to an electric vehicle, and in particular, the operating speed and driving force of the motor provided from the motor driving unit of the electric vehicle is sensed by the main control unit, and supplied to the control unit of the main battery pack and the inverter to supply power according to the operation state of the motor The present invention relates to an input power optimization device and method for an electric vehicle motor which can increase the efficiency of an inverter and a motor.
주지하다시피, 전기자동차의 주요시스템은 메인 배터리부, 인버터(Inverter) 및 모터 구동부등으로 이루어져 있으며, 현재의 시스템 운용체계는 충전된 메인 배터리의 전압을 조정없이 인버터에서 받아 모터 구동력에 필요한 전력만큼 전류제한치내에서 인버터에서 출력하고 있다.As is well known, the main system of electric vehicle consists of main battery part, inverter and motor driving part, and the current system operation system receives the voltage of charged main battery from inverter without adjusting the power required for motor driving power. The inverter outputs within the current limit.
즉, 종래의 전기자동차에 장착된 모터의 구동상태는 도 1 에 도시한 바와 같이, 소정의 전기자동차가 동작할 수 있도록 충전된 전원을 공급하는 배터리(1)와; 상기 배터리(1)에서 공급되는 DC 전원을 AC 전원으로 전환시켜주는 인버터(2)와; 상기 인버터(2)에서 공급되는 AC 전원을 이용하여 동작되는 모터구동부(3)를 포함하여 구성된다.That is, as shown in FIG. 1, a driving state of a motor mounted on a conventional electric vehicle includes a battery 1 for supplying a charged power to operate a predetermined electric vehicle; An inverter (2) for converting the DC power supplied from the battery (1) into AC power; It is configured to include a motor driving unit 3 that is operated by using the AC power supplied from the inverter (2).
상기와 같은 구성으로된 전기자동차는, 운전자가 사전에 배터리(1)에 전원을 소정량 충전시켜 놓고 상기 배터리(1)에서 공급되는 전원을 이용하여 모터구동부(3)를 통해 모터를 구동시키게 되는데, 이때 상기 배터리(1)에서 공급되는 전원은 DC 전원이기 때문에 인버터(2)를 통해 AC 전원으로 바꿔주면 상기 모터구동부(3)는 동작을 하게 된다.In the electric vehicle having the above configuration, the driver charges a predetermined amount of power to the battery 1 in advance and drives the motor through the motor driving unit 3 using the power supplied from the battery 1. In this case, since the power supplied from the battery 1 is a DC power source, the motor driving unit 3 operates when the power source is changed to AC power through the inverter 2.
그러나, 상기와 같은 종래의 전기자동차는, 모터구동부의 제어상태에는 문제가 없으나 배터리에서 공급되는 전압중에서 자동차가 필요로 하는 전력만큼 인버터에서 출력시키지 못해 인버터와 모터의 효율적인 측면에서 보면 상당한 전력손실을 유발시키는 등의 문제점이 있었다.However, the conventional electric vehicle as described above has no problem in the control state of the motor driver, but does not output as much as the power required by the vehicle among the voltages supplied from the battery, and thus, in terms of the efficiency of the inverter and the motor, a considerable power loss can be obtained. There was a problem such as causing.
본 발명의 목적은, 상기와 같은 종래의 문제점을 해소하기 위한 것으로, 종래의 전기자동차용 모터의 전력손실을 최소화 하기위해 모터의 회전속도와 구동력에 따라 인버터에서 모터로 입력되는 전압효율을 제한하여 전력효율을 높일 수 있는 장치 및 방법을 제공하는데 그 목적이 있다.An object of the present invention is to solve the above conventional problems, by limiting the voltage efficiency input from the inverter to the motor in accordance with the rotational speed and driving force of the motor to minimize the power loss of the conventional electric vehicle motor It is an object of the present invention to provide an apparatus and method for improving power efficiency.
상기와 같은 목적을 달성하기 위하여 본 발명 전기자동차용 모터의 입력전원 최적화장치는, 전기자동차의 속력이 증가되면 이를 인식할 수 있도록 하는 가속명령부와; 상기 가속명령부에서 입력되는 신호에 따라 전압치를 조절하는 인버터와; 모터구동부의 모터구동속도나 구동력에 따라 상기 인버터에서 출력되는 전압을 제어하는 제 2 제어부와; 상기 전기자동차의 모터 회전속도와 구동력을 센싱하여 메인배터리팩의 제 1 제어부나 인버터의 제 2 제어부에 입력시키는 메인제어부와; 상기 전기자동차가 구동할 수 있는 전압을 상기 인버터에 입력시키는 메인배터리팩과; 상기 메인제어부에서 입력되는 모터의 구동속도에 따라 출력전압을 제어하는 제 1 제어부와; 상기 제 2 제어부에서 입력되는 전압을 이용하여 전기자동차의 모터를 구동시키는 모터구동부를 포함하여 구성된 것을 특징으로 한다.In order to achieve the above object, the input power optimization device for an electric vehicle motor of the present invention includes an acceleration command unit for recognizing the increase of the speed of the electric vehicle; An inverter for adjusting a voltage value according to a signal input from the acceleration command unit; A second control unit controlling a voltage output from the inverter according to a motor driving speed or a driving force of a motor driving unit; A main controller which senses the motor rotational speed and the driving force of the electric vehicle and inputs it to the first controller of the main battery pack or the second controller of the inverter; A main battery pack configured to input a voltage capable of driving the electric vehicle to the inverter; A first control unit controlling an output voltage according to a driving speed of a motor input from the main control unit; It characterized in that it comprises a motor driving unit for driving the motor of the electric vehicle by using the voltage input from the second control unit.
또한, 상기와 같은 목적을 달성하기 위하여 본 발명 전기자동차용 모터의 입력전원 최적화방법은, 현재 전기자동차의 가속상태를 인식하여 메인배터리팩에서 공급되는 전압값과 전류값의 초기치를 출력하고, 이값을 이용하여 제 1 제어부에서 모터의 효율(①)을 연산하는 제 1 단계(S1)와; 상기 제 1 단계(S1)를 수행한 후, 상기 제 1 제어부에서 입력되는 전압값을 입력받은 제 2 제어부에서 상승된 전압값과 하강된 전류값을 출력하고 다시 모터효율을 연산(②)하여 ②값이 ①값보다 큰가를 판단하여 크면 ②값을 ①값에 대입하여 상기 인버터에 입력하는 제 2 단계(S2)와; 상기 제 2 단계(S2)에서 ②값보다 ①값이 작으면 인버터에서 내려간 전압값과 올라간 전류값을 출력하고, 모터의 효율을 연산(③)하여 ③값이 ①값보다 큰가를 판단하여 크면 ③값을 ①에 대입하여 인버터에 입력시키고, ③값이 ①보다 작으면 인버터에서는 전압과 전류값 및 모터의 효율값을 출력하고 인버터의 효율을 연산(④)하는 제 3 단계(S3)와; 상기 제 3 단계(S3)를 수행한후, 메인배터리팩에서 올라간 전압과 내려간 전류값이 출력되고 인버터는 효율을 연산(⑤)한후, ⑤값이 ④값보다 큰가를 판단하여 크면 ⑤값을 ④값에 대입하여 메인배터리팩에 입력하는 제 4 단계(S4)와; 상기 제 4 단계(S4)에서 ⑤값이 ④값보다 작으면 메인배터리팩에서 출력되는 전압은 내려가고 전류는 올라가며, 인버터의 효율을 연산(⑥)하고 ⑥값이 ④값보다 큰가를 판단하여 크면 ⑥값을 ④값에 대입하여 상기 메인배터리팩에 입력하고, 상기 메인배터리팩은 전압값과 전류값 및 인버터에서 효율을 출력하는 제 5 단계(S5)를 포함하여 구성된 것을 특징으로 한다.In addition, the input power optimization method of the electric vehicle motor of the present invention in order to achieve the above object, by recognizing the current acceleration state of the electric vehicle outputs the initial value of the voltage value and current value supplied from the main battery pack, this value The first step (S1) for calculating the efficiency of the motor ① in the first control unit using; After performing the first step (S1), the second controller receives the voltage value input from the first controller and outputs the increased voltage value and the lowered current value, and calculates the motor efficiency (②) again. A second step S2 of inputting the value ② into the value ① by inputting the value ② into the value ① when judging whether the value is greater than the value ①; If the value ① is smaller than the value ② in the second step (S2), the voltage value and the current value lowered from the inverter are output, and the efficiency of the motor is calculated (③) to determine whether the value ③ is greater than the value ①. A third step (S3) of inputting the value into ① and inputting the value to the inverter, and if the value of ③ is smaller than ①, the inverter outputs the voltage and current values and the efficiency value of the motor and calculates the efficiency of the inverter (S3); After performing the third step S3, the voltage up and the current down from the main battery pack are output, and the inverter calculates the efficiency (⑤), and if the value of ⑤ is greater than the value of ④, the value of ⑤ is ④. A fourth step S4 of inputting the value into the main battery pack by substituting the value; If the value ⑤ is smaller than the value ④ in the fourth step (S4), the voltage output from the main battery pack goes down and the current goes up, calculates the efficiency of the inverter (⑥) and determines if the value ⑥ is greater than the value ④. A value of ⑥ is input to the value of ④ to be input to the main battery pack, and the main battery pack includes a fifth step S5 of outputting a voltage value, a current value, and an efficiency from the inverter.
도 1 은 종래의 전기자동차에 장착된 모터의 구동상태를 나타낸 기능 블록도,1 is a functional block diagram showing a driving state of a motor mounted on a conventional electric vehicle,
도 2 는 본 발명의 일 실시예에 따른 전기자동차용 모터에 입력되는 전원을 최적화하는 장치의 구성상태를 나타낸 기능 블럭도,2 is a functional block diagram showing a configuration of an apparatus for optimizing power input to an electric vehicle motor according to an embodiment of the present invention;
도 3 은 본 발명의 일 실시예에 따른 전기자동차용 모터에 입력되는 전원을 최적화하는 방법의 동작상태를 나타낸 제어흐름도이다.3 is a control flowchart illustrating an operation state of a method for optimizing power input to an electric vehicle motor according to an embodiment of the present invention.
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>
1 : 배터리 2 : 인터버1 battery 2 interleaver
3 : 모터구동부 10 : 가속명령부3: motor driving part 10: acceleration command part
20 : 인버터 22 : 제 2 제어부20: inverter 22: second control unit
30 : 메인제어부 40 : 메인배터리팩30: main controller 40: main battery pack
42 : 제 1 제어부 50 : 모터구동부42: first control unit 50: motor driving unit
이하, 첨부도면을 참조하여 본 발명의 일 실시예에 따른 전기자동차용 모터의 입력전원 최적화장치 및 방법을 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the input power optimization device and method for an electric vehicle motor according to an embodiment of the present invention.
도 2는 본 발명의 일 실시예에 따른 전기자동차용 모터에 입력되는 전원을 최적화하는 장치의 구성상태를 나타낸 기능 블럭도로서, 도시한 바와 같이, 전기자동차의 속력이 증가되면 이를 인식할 수 있도록 하는 가속명령부(10)와; 상기 가속명령부(10)에서 입력되는 신호에 따라 전압치를 조절하는 인버터(20)와; 모터구동부(50)의 모터구동속도나 구동력에 따라 상기 인버터(20)에서 출력되는 전압을 제어하는 제 2 제어부(22)로 구성된다.Figure 2 is a functional block diagram showing the configuration of the device for optimizing the power input to the electric vehicle motor according to an embodiment of the present invention, as shown, so as to recognize when the speed of the electric vehicle is increased An acceleration command unit 10; An inverter 20 for adjusting a voltage value according to a signal input from the acceleration command unit 10; The second controller 22 controls the voltage output from the inverter 20 according to the motor driving speed or the driving force of the motor driving unit 50.
또한, 상기 전기자동차의 모터 회전속도와 구동력을 센싱하여 메인배터리팩(40)의 제 1 제어부(42)나 인버터(20)의 제 2 제어부(22)에 입력시키는 메인제어부(30)와; 상기 전기자동차가 구동할 수 있는 전압을 상기 인버터(20)에 입력시키는 메인배터리팩(40)과; 상기 메인제어부(30)에서 입력되는 모터의 구동속도에 따라 출력전압을 제어하는 제 1 제어부(42)와; 상기 제 2 제어부(22)에서 입력되는 전압을 이용하여 전기자동차의 모터를 구동시키는 모터구동부(50)를 포함하여 본 실시예를 구성한다.In addition, the main control unit 30 for sensing the motor rotational speed and the driving force of the electric vehicle to be input to the first control unit 42 of the main battery pack 40 or the second control unit 22 of the inverter 20; A main battery pack 40 for inputting a voltage capable of driving the electric vehicle to the inverter 20; A first controller 42 for controlling the output voltage according to the driving speed of the motor input from the main controller 30; This embodiment includes a motor driving unit 50 for driving a motor of an electric vehicle by using the voltage input from the second control unit 22.
또한, 도 3은 본 발명의 일 실시예에 따른 전기자동차용 모터에 입력되는 전원을 최적화하는 방법의 동작상태를 나타낸 제어흐름도로서, 도시한 바와 같이, 현재 전기자동차의 가속상태를 인식하여 메인배터리팩(40)에서 공급되는 전압값과 전류값의 초기치를 출력하고, 이값을 이용하여 제 1 제어부(42)에서 모터의 효율(①)을 연산하는 제 1 단계(S1)로 구성된다.3 is a control flow diagram illustrating an operation state of a method for optimizing power input to an electric vehicle motor according to an embodiment of the present invention. As shown in FIG. An initial value of the voltage value and the current value supplied from the pack 40 is output, and the first control part 42 is configured to use the first step S1 to calculate the efficiency ① of the motor.
또한, 상기 제 1 단계(S1)를 수행한 후, 상기 제 1 제어부(42)에서 입력되는 전압값을 입력받은 제 2 제어부(22)에서 상승된 전압값과 하강된 전류값을 출력하고 다시 모터효율을 연산(②)하여 ②값이 ①값보다 큰가를 판단하여 크면 ②값을 ①값에 대입하여 상기 인버터(20)에 입력하는 제 2 단계(S2)로 구성된다.In addition, after performing the first step (S1), the second control unit 22 that receives the voltage value input from the first control unit 42 outputs the increased voltage value and the lowered current value, and then the motor again. It is composed of a second step S2 of calculating the efficiency (②) to determine whether the value ② is greater than the value ① and substituting the value ② into the value ① and inputting the value ② into the inverter 20.
또한, 상기 제 2 단계(S2)에서 ②값보다 ①값이 작으면 인버터(20)에서 내려간 전압값과 올라간 전류값을 출력하고, 모터의 효율을 연산(③)하여 ③값이 ①값보다 큰가를 판단하여 크면 ③값을 ①에 대입하여 인버터(20)에 입력시키고, ③값이 ①보다 작으면 인버터(20)에서는 전압과 전류값 및 모터의 효율값을 출력하고 인버터(20)의 효율을 연산(④)하는 제 3 단계(S3)로 구성된다.In addition, in the second step S2, if the value ① is smaller than the value ②, the voltage value lowered from the inverter 20 and the current value increased are output, and the efficiency of the motor is calculated (③) to determine whether the value ③ is larger than the value ①. If it is determined that the value is large, input the value ③ into the inverter 20, and if the value ③ is smaller than the value ①, the inverter 20 outputs the voltage and current values, and the efficiency value of the motor, and improves the efficiency of the inverter 20. Comprising a third step (S3) to calculate (④).
또한, 상기 제 3 단계(S3)를 수행한후, 메인배터리팩(40)에서 올라간 전압과 내려간 전류값이 출력되고 인버터(20)는 효율을 연산(⑤)한후, ⑤값이 ④값보다 큰가를 판단하여 크면 ⑤값을 ④값에 대입하여 메인배터리팩(40)에 입력하는 제 4 단계(S4)로 구성된다.In addition, after performing the third step S3, the voltage up and the current down from the main battery pack 40 are output, and the inverter 20 calculates efficiency (⑤), and then is the value ⑤ greater than the value ④? If it is determined that the large value ⑤ is substituted into the value ④ is composed of a fourth step (S4) for input to the main battery pack 40.
또한, 상기 제 4 단계(S4)에서 ⑤값이 ④값보다 작으면 메인배터리팩(40)에서 출력되는 전압은 내려가고 전류는 올라가며, 인버터의 효율을 연산(⑥)하고 ⑥값이 ④값보다 큰가를 판단하여 크면 ⑥값을 ④값에 대입하여 상기 메인배터리팩(40)에 입력하고, 상기 메인배터리팩(40)은 전압값과 전류값 및 인버터(20)에서 효율을 출력하는 제 5 단계(S5)를 포함하여 본 실시예를 구성한다.In addition, when the value ⑤ is smaller than the value ④ in the fourth step S4, the voltage output from the main battery pack 40 goes down and the current goes up, and the efficiency of the inverter is calculated (⑥) and the value ⑥ is greater than the value ④. In the fifth step of judging whether the value is large, the value ⑥ is substituted into the value ④ to be input to the main battery pack 40, and the main battery pack 40 outputs a voltage value, a current value, and an efficiency from the inverter 20. This embodiment is configured to include (S5).
이하, 상기와 같이 구성된 전기자동차용 모터의 입력전원 최적화장치 및 방법의 동작과정을 첨부된 도 1 및 도 2를 참조하여 더욱 상세히 설명하면 다음과 같다.Hereinafter, the operation of the input power optimization apparatus and method of the electric vehicle motor configured as described above will be described in more detail with reference to FIGS. 1 and 2.
먼저, DC 전압의 효율 PB= V·IFirst, the efficiency of the DC voltage P B = V · I
인버터에서 출력되는 전압에 대한 효율 PI= 3vicosθ·ηI Efficiency for the voltage output from the inverter P I = 3vicosθ · η I
모터에서 출력되는 전압에 대한 효율 PM= PI·ηM Efficiency for the voltage output from the motor P M = P I · η M
= 3vi·iI·cosθ·ηI·ηM = 3v i · i I · cosθ · η I · η M
= WT= WT
여기서, V, I = DC 전압, 전류Where V, I = DC voltage, current
v, i = AC 전압, 전류v, i = AC voltage, current
ηI, ηM= 인버터와 모터의 효율η I , η M = efficiency of inverter and motor
W = 모터의 회전각속도W = rotational speed of the motor
T = 모터의 회전구동력를 나타낸다.T = rotational driving force of the motor.
불특정한 전기자동차의 현재 가속상태를 인식하여 메인배터리팩(40)에서 공급되는 전압값과 전류값의 초기치를 출력하고, 이 값을 이용하여 제 1 제어부(42)에서 모터의 효율(①)을 상기방법을 이용하여 연산한다.Recognizing the current acceleration state of the unspecified electric vehicle, and outputs the initial value of the voltage value and current value supplied from the main battery pack 40, by using this value to determine the efficiency (①) of the motor in the first control unit 42 Calculate using the above method.
이후, 상기 모터효율값(①)값을 이용하여 인버터(20)에서 상승된 전압값과 하강된 전압값을 출력하고 다시 모터의 효율을 연산(②)하며, ②값이 ①보다 큰가를 판단하여 크면 ②값을 ①값에 대입하여 인버터(20)에 입력하고 작으면, 상기 인버터(20)에서 하강된 전압값과 상승된 전류값을 출력한다.Subsequently, by using the motor efficiency value (①), the inverter 20 outputs the increased voltage value and the lowered voltage value and calculates the efficiency of the motor again (②), and determines whether the value ② is greater than ①. If large, the value ② is substituted into the value ① and input to the inverter 20. If the value is small, the lower voltage value and the increased current value are output from the inverter 20.
이어, 다시 모터의 효율을 연산(③)하여 ③값이 ①보다 큰가를 판단하여 크면 ③값을 ①에 대입하여 인버터(20)에 입력하고, 작으면 상기 인버터(20)의 전압값과 전류값 및 모터의 효율을 출력한다.Subsequently, the efficiency of the motor is calculated (③) to determine whether the value ③ is greater than ①, and when the value is large, the value ③ is substituted into the input ① and input to the inverter 20. When the value is small, the voltage value and the current value of the inverter 20 are input. And output the efficiency of the motor.
또한, 인버터의 효율을 연산(④)하고 메인배터리팩(40)에서는 상승된 전압과 내려간 전류값을 출력하고 인버터 효율을 연산(⑤)한 후 ⑤값이 ④값보다 큰가를 판단하여 크며 ⑤값을 ④값에 대입하여 상기 메인배터리팩(40)에 입력하고 작으면 상기 메인배터리팩(40)에서 출력되는 전압은 내려하고 전류는 올라간다.In addition, the inverter efficiency is calculated (④), and the main battery pack 40 outputs the increased voltage and the lowered current value, and the inverter efficiency is calculated (⑤), and the value of ⑤ is greater than the value of ④. Input to the main battery pack 40 by substituting the value ④ and the voltage output from the main battery pack 40 decreases and the current goes up.
또한, 인버터 효율을 다시 연산(⑥)하여 ⑥값이 상기 ④값보다 큰가를 판단하여 크면 ⑥값을 ④값에 대입하여 상기 메인배터리팩(40)에 입력하고, 작으면 상기 메인배터리팩(40)에서 전압값과 전류값이 출력되고, 인버터(20)에서는 인버터 효율이 출력되는 동작을 수행하게 된다.In addition, the inverter efficiency is recalculated (⑥) to determine whether the value of ⑥ is greater than the value of ④, and if the value is large, the value ⑥ is substituted into the value of ④ and input to the main battery pack 40. ) And a voltage value and a current value are output, and the inverter 20 performs an operation of outputting the inverter efficiency.
한편, 본 발명은 상기 실시예에 한정되지 않고 본 발명의 기술적 요지를 벗어나지 않는 범위내에서 다양하게 변형실시할 수 있다.Meanwhile, the present invention is not limited to the above embodiments and can be variously modified within the scope not departing from the technical gist of the present invention.
이상에서 살펴본 바와 같이 본 발명 전기자동차용 모터의 입력전원 최적화장치 및 방법은, 불특정한 전기자동차의 모터구동부로 부터 모터의 속도와 구동력에 대한 신호를 센싱받아 메인제어부에서 배터리와 인버터를 제어하여 자동차의 속도에 따라 전력을 공급받을 수 있어 인버터와 모터의 효율이 증가되는 등의 효과가 있다.As described above, the apparatus and method for optimizing the input power of the motor for an electric vehicle according to the present invention receives a signal about the speed and driving power of the motor from an unspecified motor driving unit and controls the battery and the inverter from the main controller to control the vehicle. Power can be supplied according to the speed of the inverter and the motor efficiency is increased.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019980027947A KR20000008221A (en) | 1998-07-10 | 1998-07-10 | Optimization device and method of input power supply of motor for electric motor vehicle |
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| KR1019980027947A KR20000008221A (en) | 1998-07-10 | 1998-07-10 | Optimization device and method of input power supply of motor for electric motor vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100674539B1 (en) * | 2003-11-04 | 2007-01-29 | 닛산 지도우샤 가부시키가이샤 | Control of vehicle motor |
| US8786221B2 (en) | 2010-03-31 | 2014-07-22 | Hyundai Motor Company | Method for controlling permanent magnet synchronous motor |
-
1998
- 1998-07-10 KR KR1019980027947A patent/KR20000008221A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100674539B1 (en) * | 2003-11-04 | 2007-01-29 | 닛산 지도우샤 가부시키가이샤 | Control of vehicle motor |
| US8786221B2 (en) | 2010-03-31 | 2014-07-22 | Hyundai Motor Company | Method for controlling permanent magnet synchronous motor |
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