Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for operating three-phase machine

A three-phase motor, three-phase grid technology, applied in the direction of starter, motor control, motor generator control, etc. of a single polyphase induction motor, which can solve the problems of cost and availability impact, unattractive, etc.

Inactive Publication Date: 2020-04-03
SIEMENS AG
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The sensor system negatively impacts the cost and availability of the system, which now makes soft starter solutions unattractive for efficient motors

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for operating three-phase machine
  • Method for operating three-phase machine
  • Method for operating three-phase machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Figure 4 As the basis of the grid angle of the three-phase grid in the case of selecting the best ignition timing of the thyristor Motor angle with three-phase motor The contour map of the maximum possible average torque M_mean shows the possible torque trend using the present invention. Can be combined with figure 2 Read in the same way as the contour map shown Figure 4 Contour map shown. For clarity, in Figure 4 Omitted in figure 2 The arrow drawn in to give the direction of time.

[0042] To be able to bridge image 3 In the pulse gap 31, according to the present invention, topology adjustment is performed. Thus, it is also possible to apply a rotating field opposite to the rotating direction of the motor in the stator. From Figure 4 It can be clearly seen that through the second rotating field in the stator that rotates in the direction opposite to the first rotating direction, the "torque valley" passes through the newly added "torque peak" extending transver...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for operating a three-phase machine. An embodiment relates to a method for operating a three-phase machine (1), in particular to a synchronous motor excited by permanent magnet, including a rotor (L) and a stator (St) connected to a three-phase network. The stator is connected to the three-phase network via a first semiconductor circuit arrangement for forming a first rotational field rotating in a first direction of rotation in the stator and via a second semiconductor circuit arrangement for forming a second rotational field rotating in a direction of rotation opposite to the first direction of rotation in the stator. The three-phase machine further includes a controller (3). The method includes controlling, via the controller, semiconductors of the first and second semiconductor circuit arrangement to accelerate the rotor by current pulses of both the first rotational field and second rotational field in the first direction of rotation.

Description

Technical field [0001] The invention relates to a method for operating a three-phase motor, a corresponding computer program product, a rotating current controller, and a driving system with the rotating current controller. Background technique [0002] In principle, a three-phase motor can operate as a generator or as a motor. The former converts mechanical energy into three-phase alternating current, and the latter converts three-phase alternating current into mechanical energy. According to IEC standard 60034, three-phase motors are divided into different efficiency levels IE 1 to IE 4 (IEC = International Electrotechnical Commission; IE = International Efficiency, International Efficiency) according to the efficiency of three-phase motors. Especially in the low power range up to about 20kW, the use of asynchronous motors cannot maintain all the defined efficiencies for the motors in a simple manner. Therefore, more and more permanent magnets are used in the rotor, such as pe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/10H02P6/20
CPCH02P6/10H02P6/20H02P2207/05H02P1/028H02P1/28H02P1/40H02P21/22H02K21/46H02P21/10
Inventor H.南恩H.扎托西尔
Owner SIEMENS AG