Switched Reluctance Motor (SRM) driving a Fan Load Designer203836 × Member for 7 years 2 months 7 designs 1 groups Add a bio to your profile to share information about yourself with other SystemVision users. https://explore.partquest.com/node/263722 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/263722"></iframe> Title Description <p>This open-loop fan drive system has a 48V DC supply and runs at just under 1800 RPM (187 rad/sec), generating 100 Watts of mechanical power. It uses a simple switching scheme to energize and de-energize the three phase windings of the SRM.</p><p>The switches are controlled by 3 index sensors that align the windings' activation and de-activation at the desired rotor angle. Note that when de-energizing a winding and the switches are opened, the current continues to flow from ground to the battery connection, via the diodes, thus returning energy stored in the winding inductance back to the supply. Once that current reaches 0.0 A, the now reverse biased diodes prevent a current reversal and re-energizing of the winding.</p> About text formats Tags index sensor Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Switched Reluctance Motor (SRM) driving a FAN Designer12 × Member for 12 years 1 month 116 designs 10 groups Add a bio to your profile to share information about yourself with other SystemVision users. https://explore.partquest.com/node/113686 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/113686"></iframe> Title Description <p>This open-loop fan drive system has a 48V DC supply and runs at just under 1800 RPM (180 rad/sec), generating 100 Watts of mechanical power. It uses a simple switching scheme to energize and de-energize the three phase windings of the SRM.</p><p>The switches are controlled by 3 index sensors that align the windings' activation and de-activation with the rotor position. The switches and control configuration are shown directly on the schematic for Phase A, but are hierarchically hidden under u1 and u2 for Phases B and C, for compactness.</p><p>Note that when de-energizing A phase, the current sense resistor monitors the winding current and directs it through switch sw_a3 to return that energy to the supply rail. Once that current reaches 0.0 A, that switch is opened to prevent a current reversal, which would re-energize the winding and cause undesired reverse torque.</p> About text formats Tags index sensor Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -