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首页> 外文会议>2011 International Conference on Electronics, Communications and Control >A new method to detect the initial position for sensorless SRM
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A new method to detect the initial position for sensorless SRM

机译：检测无传感器SRM初始位置的新方法

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To know the rotor initial position is a key factor to start the SRM without inversion. There are some methods to detect the initial position of sensorless SRM. For example, phase current method, phase inductance method, test coil method and so on. In this paper we proposed a new way to detect the initial position, which is based on analysis of the mutual inductance. When we add excitation to one phase, and measure the mutually induced voltage in an inactive phase which is adjacent to the energized phase of SRM. The mutual voltage depends on the excitation current and rotor position. If the current is a constant, the voltage will change with the rotation of the rotor which causes the coupling area between the active phase and the inactive phase. We could determine the rotor initial position by comparing the voltages generated by the two adjacent phases. The feasibility and reliability of the method is proved by the experiment of four-phase 8/6 pole SRM.
机译：知道转子的初始位置是启动SRM而不反转的关键因素。有一些方法可以检测无传感器SRM的初始位置。例如，相电流法，相电感法，测试线圈法等。在本文中，我们基于对互感的分析，提出了一种检测初始位置的新方法。当我们将激励添加到一个相中，并在与SRM激励相相邻的非活动相中测量互感电压。互电压取决于励磁电流和转子位置。如果电流是恒定的，则电压将随着转子的旋转而变化，这将导致有效相和无效相之间的耦合区域。我们可以通过比较两个相邻相产生的电压来确定转子的初始位置。通过四相8/6极SRM实验证明了该方法的可行性和可靠性。

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