How to deal with the voltage instability of permanent magnet DC motor

<p>How to deal with the voltage instability of <a href="https://www.pm-motor.com/products" rel="noopener noreferrer" target="_blank"><strong><a href="https://www.pm-motor.com/products" target="_blank">permanent magnet DC motor</a></strong></a></p><p><br></p><p><strong>Permanent magnet DC motor</strong> is a common device. As we all know, the more stable its operation is, the higher its efficiency is. Therefore, if the voltage is unstable, it should be resolved in time to avoid affecting the use. What is shared is what to do if its voltage is unstable.</p><p><br></p><p>1. Magnetic field regulation in the excitation circuit: a permanent resistance DC motor is connected in parallel with a suitable resistive load such as an incandescent light bulb. The resistance value of the resistive load after heating becomes nonlinear resistance characteristics, so that the field resistance line is The initial section of the excitation characteristic has a large intersection angle, and a clear intersection point with the no-load characteristic curve is obtained, so that the <a href="https://www.pm-motor.com/products" rel="noopener noreferrer" target="_blank">permanent magnet DC motor</a> will also have a stable operating point at a lower voltage;</p><p><br></p><p>2. Magnetic pole gasket: A benign magnetically conductive material is placed under the pole pole shoe to reduce the excitation magnetic field gap, which can saturate the output characteristics at a small excitation current and thus stabilize its output voltage;</p><p><br></p><p>3. Adopt generator automatic excitation adjustment device: generator automatic excitation adjustment device has good excitation characteristics, and has various adjustment methods such as constant reactive power and constant power factor, which is very effective for improving the stability and transient response ability of the system. It can solve the problem of generator reactive power swing caused by unstable output voltage and system voltage fluctuation.</p><p>The above analyzes how to deal with the voltage instability of<a href="https://www.pm-motor.com/products" rel="noopener noreferrer" target="_blank"> permanent magnet DC motors</a>. When you encounter this situation in the future, you can choose the appropriate method according to the actual situation to better solve the problem and put it into use as soon as possible.</p>