WO2008017212A1 - Module de commande de freinage d'un moteur à courant continu sans collecteur, à aimants permanents et à trois phases entraînant directement une pompe à vis - Google Patents

Module de commande de freinage d'un moteur à courant continu sans collecteur, à aimants permanents et à trois phases entraînant directement une pompe à vis Download PDF

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Publication number
WO2008017212A1
WO2008017212A1 PCT/CN2006/001968 CN2006001968W WO2008017212A1 WO 2008017212 A1 WO2008017212 A1 WO 2008017212A1 CN 2006001968 W CN2006001968 W CN 2006001968W WO 2008017212 A1 WO2008017212 A1 WO 2008017212A1
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WO
WIPO (PCT)
Prior art keywords
motor
screw pump
brake
controller
circuit
Prior art date
Application number
PCT/CN2006/001968
Other languages
English (en)
French (fr)
Inventor
Jun Liu
Yongjian Tang
Hengli Cong
Original Assignee
Jun Liu
Yongjian Tang
Hengli Cong
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jun Liu, Yongjian Tang, Hengli Cong filed Critical Jun Liu
Priority to BRPI0621927-6A priority Critical patent/BRPI0621927A2/pt
Priority to US12/375,957 priority patent/US8283879B2/en
Priority to AU2006347193A priority patent/AU2006347193B2/en
Priority to CA2671381A priority patent/CA2671381C/en
Priority to EP06775289.9A priority patent/EP2053246A4/en
Priority to PCT/CN2006/001968 priority patent/WO2008017212A1/zh
Priority to MX2009001243A priority patent/MX2009001243A/es
Publication of WO2008017212A1 publication Critical patent/WO2008017212A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
    • H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
    • H02P3/22—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by short-circuit or resistive braking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type

Definitions

  • the invention belongs to a brake controller for directly driving a production oil screw pump of a motor, in particular to a three-phase permanent magnet brushless DC motor reverse speed suppression brake controller for directly driving a screw pump.
  • the screw pump is a high-efficiency oil recovery equipment. There are two main reasons for the shutdown of the screw pump:
  • the longer rod will be elastically deformed. After the top end of the polished rod rotates for several dozen turns, the downhole rotor begins to rotate. When the machine is stopped, the elastic energy of these dozens of turns will be released. If it is not restrained, the polished rod near the ground will be reversed at high speed, due to the polished rod. It is made up of many joints (except for continuous rods), and high-speed reversal will cause the polished rod reverse tripping accident. In order to ensure the safety of the polished rod, braking means must be used.
  • the screw pump mainly adopts two kinds of braking methods:
  • the first one is the ratcheting reverse rotation mode, which is a mechanical absolute reverse type, which does not allow the polished rod to reverse.
  • This mode is simple in structure, but the reliability is poor, and there is still another time. If the starting initial torque is too large during starting, the elastic deformation of the polished rod must be released during the starting impact and workover operation. If the operation is not good, it will cause mechanical damage or personal injury.
  • the second type is reverse hydraulic suppression. This method has high reliability. However, the cost is high and the structure is complicated, which increases equipment investment.
  • An object of the present invention is to provide a motor reverse speed suppressing brake control device for directly driving a screw pump to overcome the disadvantages of the mechanical pumping of the screw pump.
  • the invention relates to a three-phase permanent magnet brushless DC motor brake controller for directly driving a screw pump, comprising: a detection circuit for detecting a power supply state of a three-phase permanent magnet brushless DC motor; a brake circuit, according to a permanent magnet synchronous motor
  • the power supply state controls the start of the brake.
  • the brake circuit is disconnected.
  • the screw pump drives the motor to reverse, the brake circuit is activated.
  • the invention realizes the soft brake of the three-phase permanent magnet brushless DC motor of the direct drive screw pump by configuring the brake circuit on the three-phase permanent magnet brushless DC motor directly driving the screw pump, and realizes the elastic force of the screw pump rod It is fully slowly released, overcoming the shortcomings of mechanical braking.
  • the three-phase permanent magnet brushless DC motor brake controller of the direct drive screw pump of the invention comprises: a motor controller, a current transformer L, a normally closed relay MJ, wherein the detection circuit is connected to the motor controller three-phase current input Between any two phases of the terminal, the current transformer is close to the three-phase current output terminal of the motor controller, and the current transformer is connected in series with the normally closed relay.
  • the brake circuit includes: three high-power energy consumption in parallel on the three-phase current output circuit of the motor controller Resistors RA, RB and RC, wherein each of the energy consuming resistors is in series with the contacts MJ-A, MJ-B or MJ-C of the normally closed relay.
  • the three-phase permanent magnet brushless DC motor brake controller of the direct drive screw pump of the invention comprises: a motor controller, a current transformer L, a normally closed relay MJ, a rectifier diode Q1 and Q2, a rectifying transistor V and a current limiting The impedance component Z1, wherein the detection circuit is connected between any two phases of the three-phase current input end of the motor controller, the current transformer L is close to the three-phase current output terminal of the motor controller, the current transformer L and the normally closed relay MJ, the rectifier diode Q1 And Q2, rectifying transistor V and current limiting impedance component Z1 are connected in series; braking circuit comprises: paralleling three high-power energy-consuming resistors on the three-phase current output circuit of the motor controller, wherein each energy-consuming resistor RA, RB or RC and one The high-power triac MC-A, MC-B or MC-A is connected in series, and the conduction state of the high-power triac is controlled by a normally-closed
  • the screw pump When the motor is powered, the screw pump is driven to rotate in the forward direction, the current transformer generates the induced current, the normally closed relay is energized at both ends, and the normally closed relay contact is disconnected, that is, the brake circuit is not activated, and the energy consumption resistor is not turned on.
  • the brake controller of the invention has the advantages of simple structure, convenient operation and good braking performance.
  • the screw pump mechanical brake device is eliminated and the shortcomings of mechanical brake are overcome. It can be used on the rod-driven direct-drive screw pump to release the elastic force of the polished rod slowly. It can be used on the submersible rodless pump to prevent the liquid from flowing back and break the drive shaft. After the shutdown is stable, the initial starting torque of the next start is small, which is easy to start, and there is no reversal problem in the workover operation to prevent accidents.
  • the brake controller of the present invention saves energy. Since the brake is braked by the generator braking force when the generator is reversed, the greater the reverse acceleration, the greater the power generation braking force, and finally the diaphragm elastic energy and the liquid return energy are completely released slowly, returning to the initial state. Achieve soft brakes. Therefore, the brakes do not require external energy.
  • Figure 1 is a block diagram of the brake controller of the motor directly driving the oil recovery screw pump of the present invention
  • FIG. 2 is a circuit diagram of the brake controller of the motor directly driving the oil extraction screw pump of the present invention
  • FIG. 3 is a circuit schematic diagram of a preferred embodiment of a brake controller for directly driving a production oil screw pump of the present invention.
  • the invention directly drives a three-phase permanent magnet brushless DC motor brake controller of a screw pump, and the detection circuit comprises: a motor controller 1, a current transformer 2, a normally closed relay 3, wherein the detection circuit closed loop is connected to the motor controller three-phase Between any two phases of the current input terminal, the current transformer is close to the three-phase current output terminal of the motor controller, and the current transformer is connected in series with the normally closed relay.
  • the brake circuit includes: three high powers connected in parallel on the three-phase current output circuit of the motor controller The energy consumption resistor 4, wherein each of the energy consumption resistors is connected in series with the contacts 5, 6 or 7 of the normally closed relay.
  • the screw pump When the motor is powered, the screw pump is driven to rotate in the forward direction, the current transformer generates the induced current, the normally closed relay is energized at both ends, and the normally closed relay contacts MC-A, MC-B, and MC-C are disconnected.
  • the current transformer When the motor stops supplying power, the current transformer has no induced current, the normally closed relay is not energized at both ends, the normally closed relay contacts MC-A, MC-B, MC-C are closed, and the energy consumption resistors RA, RB, RC are connected.
  • the brake is activated at this time. Since the permanent magnet motor stops working, the screw pump rotor reverses, causing the motor to reverse.
  • the invention directly drives a three-phase permanent magnet brushless DC motor brake controller of a screw pump, and the detection circuit further comprises: a motor controller 1, a current transformer 2, a normally closed relay 3, a rectifier diode 8, a rectifier transistor 9 and a current limiting impedance The component 10, wherein the detection circuit closed loop is connected between any two phases of the three-phase current input end of the motor controller 1, the current transformer 2 is close to the three-phase current output end of the motor controller, the current transformer 2 and the normally closed relay 3, and the rectifier The diode 8, the rectifying transistor 9 and the current limiting impedance element 10 are connected in series; the braking circuit comprises: three high-power energy-consuming resistors connected in parallel on the three-phase current output circuit of the motor controller, wherein each of the energy-consuming resistors 4 and one is a normally-closed relay The high power triacs 11, 12, 13 that control the on state are connected in series.
  • the screw pump When the motor is powered, the screw pump is driven to rotate in the forward direction, and the current transformer generates an induced current.
  • the closed relay is energized at both ends, the normally closed relay contacts MA, MC-B, MC-C are disconnected, and the high-power triac MC-A, MC-B, MC-C are disconnected; when the motor stops supplying power, the current
  • the transformer has no induced current, the normally closed relay is not energized at both ends, the normally closed relay contacts MC-A, MC-B, MC-C are closed, and the high-power triac MC-A, MC-B, MC-C are connected.
  • Pass the energy consumption resistors RA, RB, RC are turned on, and the brake is activated at this time.
  • the screw pump rotor reverses, causing the motor to reverse. At this time, the state of the permanent magnet motor becomes the working state of the generator. Because the resistance of the energy consumption resistor is constant, the faster the reversal speed, the larger the braking torque of the generator, thus suppressing the reversal speed of the motor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Stopping Of Electric Motors (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Non-Positive Displacement Air Blowers (AREA)

Description

直接驱动螺杆泵的三相永磁无刷直流电机刹车控制器 技术领域
本发明属于电机直接驱动采油螺杆泵的刹车控制器 , 具体说是一种直接驱 动螺杆泵的三相永磁无刷直流电机反转速度抑制刹车控制器。
背景技术
螺杆泵属高效采油设备， 螺杆泵的停机反转主要有两个原因：
一、 有杆泵的驱动装置使转子旋转时， 较长的光杆会产生弹性变形。 光杆 最顶端旋转几十圈后， 井下转子才开始旋转， 当停机时， 这几十圈的弹性能量 就会释放， 若不加以抑制， 就会造成靠近地面部分的光杆高速反转返回， 由于 光杆由许多节连接而成（连续杆除外），高速反转就会造成光杆反转脱扣事故。 为 保证光杆的安全， 必须采用刹车手段。
二、 停机时， 油管中的液体压力和管网压力作用会产生液体的回流， 像水 轮发电机一样， 推动螺杆泵转子产生高速反转， 这种现象无论在地面驱动的有 杆泵， 还是在井下潜入油内的无杆泵都会发生。 当液体回流时， 往往会发生因 急剧的液体回流折断与转子连接部分的传动轴（尤其针对潜油无杆泵）。
目前螺杆泵主要采用两种刹车方式： 第一种是棘轮止反转方式， 此方式为 机械绝对逆止型， 不允许光杆反转， 该方式结构简单， 但可靠性较差， 还存在 当再次起动时起动初始力矩过大造成起动冲击和修井作业时光杆弹性形变必须 释放等问题， 操作不好会造成机械损坏或人身伤害事故； 第二种是反转液压抑 制方式， 该方式可靠性高， 但成本高， 结构复杂， 增加了设备投资。
发明内容
本发明的目的是提供一种直接驱动螺杆泵的电机反转速度抑制刹车控制装 置， 以克服螺杆泵机械制动的缺点。
本发明是一种直接驱动螺杆泵的三相永磁无刷直流电机刹车控制器， 其包 括： 检测电路， 用于检测三相永磁无刷直流电机供电状态； 刹车电路， 根据永 磁同步电机的供电状态控制刹车的启动， 当电机供电工作时， 刹车电路断开； 当电机不供电、 螺杆泵带动电机反转时， 刹车电路启动。
本发明通过在直接驱动螺杆泵的三相永磁无刷直流电机上配置刹车电路， 成功的实现了直接驱动螺杆泵的三相永磁无刷直流电机的软刹车， 并使螺杆泵 光杆弹性力得到充分緩慢释放， 克服了机械制动的缺点。 本发明的直接驱动螺杆泵的三相永磁无刷直流电机刹车控制器， 检测电路 包括： 电机控制器， 电流互感器 L, 常闭继电器 MJ， 其中检测电路接于电机控 制器三相电流输入端的任意两相之间， 电流互感器靠近电机控制器三相电流输 出端， 电流互感器与常闭继电器串联， 刹车电路包括： 在电机控制器三相电流 输出电路上并联三个大功率能耗电阻 RA、 RB和 RC, 其中每个能耗电阻与常闭继 电器的触点 MJ-A、 MJ-B或 MJ-C串联。
本发明的直接驱动螺杆泵的三相永磁无刷直流电机刹车控制器， 检测电路 包括： 电机控制器， 电流互感器 L， 常闭继电器 MJ, 整流二极管 Q1和 Q2、 整流 三极管 V和限流阻抗元件 Zl， 其中检测电路接于电机控制器三相电流输入端的 任意两相之间， 电流互感器 L靠近电机控制器三相电流输出端， 电流互感器 L 与常闭继电器 MJ、整流二极管 Q1和 Q2、整流三极管 V和限流阻抗元件 Z1串联； 刹车电路包括： 在电机控制器三相电流输出电路上并联三个大功率能耗电阻， 其中每个能耗电阻 RA、 RB或 RC与一大功率双向可控硅 MC- A、 MC-B或 MC-A串 联， 此大功率双向可控硅的导通状态由常闭继电器控制。
当电机供电工作时， 带动螺杆泵正向转动， 电流互感器产生感应电流， 常 闭继电器两端带电， 常闭继电器触点断开， 即刹车电路不启动、 能耗电阻不接 通。 当电机停止供电时， 电流互感器无感应电流， 常闭继电器两端不带电， 常 闭继电器触点 MC- A、 MC-B, MC- C 闭合， 刹车电路启动， 能耗电阻 RA、 RB、 RC 接通； 此时螺杆泵转子反转， 带动电机反转, 永磁电机状态就变为发电机工作 状态， 又因为能耗电阻阻值一定,反转速度越快， 发电制动力矩越大， 从而抑制 了电机反转速度， 实现了电机的软刹车。
有益效果
本发明的刹车控制器结构筒单、 操作方便， 刹车性能好。 免去了螺杆泵机 械制动的设备， 并克服了机械制动的缺点。 用在有杆直驱式螺杆泵上能使光杆 弹性力得到充分緩慢释放， 用在潜油无杆泵上可以防止液体的回流折断传动轴。 停机稳定后， 下次起动初始起动力矩很小， 便于起动， 修井作业也不会出现反 转问题， 防止事故发生。
本发明的刹车控制器节省能耗。 由于这种刹车是靠发电机反转时的发电制 动力制动， 反转的加速度越大， 发电制动力越大， 最终使光杵弹性能量和液体 回流能量完全緩慢释放， 回到初始状态， 实现软刹车。 因此， 刹车无需外来能 源。 附图说明
图 1本发明电机直接驱动采油螺杆泵的刹车控制器的电路方框图
图 2 本发明电机直接驱动采油螺杆泵的刹车控制器的电路原理图
图 3本发明电机直接驱动采油螺杆泵的刹车控制器优选实施方式的电路原理图 具体实施方式：
实施例 1 : (见图 2 )
本发明直接驱动螺杆泵的三相永磁无刷直流电机刹车控制器， 检测电路包 括： 电机控制器 1 , 电流互感器 2, 常闭继电器 3， 其中检测电路闭合回路接于 电机控制器三相电流输入端的任意两相之间， 电流互感器靠近电机控制器三相 电流输出端， 电流互感器与常闭继电器串联， 刹车电路包括： 在电机控制器三 相电流输出电路上并联三个大功率能耗电阻 4 ,其中每个能耗电阻与常闭继电器 的触点 5、 6或 7串联。
当电机供电工作时， 带动螺杆泵正向转动， 电流互感器产生感应电流， 常 闭继电器两端带电， 常闭继电器触点 MC-A、 MC- B、 MC- C断开。 当电机停止供电 时， 电流互感器无感应电流， 常闭继电器两端不带电， 常闭继电器触点 MC-A、 MC-B、 MC- C闭合， 能耗电阻 RA、 RB、 RC接通， 此时刹车启动。 由于永磁电机停 止工作， 螺杆泵转子反转， 带动电机反转。 这时的永磁电机状态变为发电机工 作状态， 因为能耗电阻阻值一定，反转速度越快 , 发电制动力矩越大， 从而抑制 了电机反转速度。 实施例 2: (见图 3 )
本发明直接驱动螺杆泵的三相永磁无刷直流电机刹车控制器， 检测电路还 包括： 电机控制器 1 , 电流互感器 2 , 常闭继电器 3, 整流二极管 8、 整流三极 管 9和限流阻抗元件 10, 其中检测电路闭合回路接于电机控制器 1三相电流输 入端的任意两相之间， 电流互感器 2 靠近电机控制器三相电流输出端， 电流互 感器 2与常闭继电器 3、 整流二极管 8、 整流三极管 9和限流阻抗元件 10串联； 刹车电路包括： 在电机控制器三相电流输出电路上并联三个大功率能耗电阻， 其中每个能耗电阻 4与一由常闭继电器控制导通状态的大功率双向可控硅 11、 12、 13串联。
当电机供电工作时， 带动螺杆泵正向转动， 电流互感器产生感应电流， 常 闭继电器两端带电， 常闭继电器触点 M-A、 MC- B、 MC-C 断开， 大功率双向可控 硅 MC- A、 MC- B、 MC-C断开; 当电机停止供电时， 电流互感器无感应电流， 常闭 继电器两端不带电， 常闭继电器触点 MC-A、 MC-B, MC- C闭合， 大功率双向可控 硅 MC-A、 MC-B、 MC-C接通， 能耗电阻 RA、 RB、 RC接通， 此时刹车启动。 由于 永磁电机停止工作，.螺杆泵转子反转， 带动电机反转。 这时的永磁电机状态变 为发电机工作状态。因为能耗电阻阻值一定，反转速度越快，发电制动力矩越大， 从而抑制了电机反转速度。

Claims

权利要求
1. 一种直接驱动螺杆泵的三相永磁无刷直流电机刹车控制器， 其包括： 检测电 路， 用于检测三相永磁无刷直流电机供电状态； 刹车电路， 根据永磁同步电 机的供电状态控制刹车的启动， 其特征在于， 当电机供电工作时， 刹车电路 断开； 当电机不供电、 螺杆泵带动电机反转时， 刹车电路启动。
2. 根据权利要求 1直接驱动螺杆泵的三相永磁无刷直流电机刹车控制器， 其特 征在于， 检测电路包括： 电机控制器， 电流互感器 （L ), 常闭继电器（MJ ), 其中检测电路接于电机控制器三相电流输入端的任意两相之间， 电流互感器 靠近电机控制器三相电流输出端， 电流互感器与常闭继电器串联， 刹车电路 包括： 在电机控制器三相电流输出电路上并联三个大功率能耗电阻（RA、 RB 和 RC ), 其中每个能耗电阻与常闭继电器的触点（MJ-A、 MJ- B或 MJ- C)串联。
3. 根据权利要求 1直接驱动螺杆泵的三相永磁无刷直流电机刹车控制器， 其特 征在于， 检测电路包括： 电机控制器， 电流互感器 （L ), 常闭继电器 （MJ ), 整流二极管 （Q1和 Q2 )、 整流三极管 （V )和限流阻抗元件（Z1 ), 其中检测 电路接于电机控制器三相电流输入端的任意两相之间， 电流互感器（L )靠近 电机控制器三相电流输出端， 电流互感器（L ) 与常闭继电器（MJ )、 整流二 极管（(^1和(^2 )、 整流三极管（V )和限流阻抗元件（Z1 ) 串联； 刹车电路包 括： 在电机控制器三相电流输出电路上并联三个大功率能耗电阻， 其中每个 能耗电阻（RA、 RB或 RC )与一大功率双向可控硅 ( MC-A 、 MC-B或 MC-A ) 串联， 此大功率双向可控硅的导通状态由常闭继电器控制。
PCT/CN2006/001968 2006-08-04 2006-08-04 Module de commande de freinage d'un moteur à courant continu sans collecteur, à aimants permanents et à trois phases entraînant directement une pompe à vis WO2008017212A1 (fr)

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BRPI0621927-6A BRPI0621927A2 (pt) 2006-08-04 2006-08-04 controlador de freio de motor trifásico de corrente contìnua sem escovas com imã permanente para bomba helicoidal de acionamento direto
US12/375,957 US8283879B2 (en) 2006-08-04 2006-08-04 Braking controller of a three-phase permanent magnetic brushless DC motor for directly driving a screw pump
AU2006347193A AU2006347193B2 (en) 2006-08-04 2006-08-04 A braking controller of a three-phase permanent magnetic brushless DC motor for directly driving a screw pump
CA2671381A CA2671381C (en) 2006-08-04 2006-08-04 Braking controller of a three-phase permanent magnetic brushless dc motor for directly driving a screw pump
EP06775289.9A EP2053246A4 (en) 2006-08-04 2006-08-04 A braking controller of a three-phase permanent magnetic brushless dc motor for directly driving a screw pump
PCT/CN2006/001968 WO2008017212A1 (fr) 2006-08-04 2006-08-04 Module de commande de freinage d'un moteur à courant continu sans collecteur, à aimants permanents et à trois phases entraînant directement une pompe à vis
MX2009001243A MX2009001243A (es) 2006-08-04 2006-08-04 Un controlador de frenado de un motor de cd sin escobillas magneticas permanentes trifasicas para activar directamente una bomba de tornillo helicoidal.

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CA2671381A1 (en) 2008-02-14
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