Copy of Three Phase Power System - on Fri, 07/28/2023 - 14:28 Designer https://explore.partquest.com/node/602334 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/602334"></iframe> Title Description <p>This example three-phase power distribution system uses a variety of load types to create realistic static and transient grid-loading conditions and system asymmetries. These include constant power and variable resistance loads, lamps and motors with complex start-up load current profiles, as well as imbalance in the generator, lines and transformers.</p> <p>The models provide not only the characteristic behavior of each component, but also internally track the power input, output and dissipation, per phase and in total, so that power flow can be easily monitored. This system can also be used to assess, for example, the potentially destabilizing effect of a constant power load. Its “negative resistance”, or inverse relationship between the input voltage and current, can be observed in the simulation results by zooming in on a few individual AC cycles.</p> About text formats Tags Three PhasePower Flow AnalysisDelta-Wye TransformerConstant Power LoadsMotor Start-upInduction Motorlamp in-rush currentMechatronics Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of project2 - on Wed, 03/24/2021 - 20:17 Designer https://explore.partquest.com/node/424544 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/424544"></iframe> Title Description <p>This example three-phase power distribution system uses a variety of load types to create realistic static and transient grid-loading conditions and system asymmetries. These include constant power and variable resistance loads, lamps and motors with complex start-up load current profiles, as well as imbalance in the generator, lines and transformers.</p> <p>The models provide not only the characteristic behavior of each component, but also internally track the power input, output and dissipation, per phase and in total, so that power flow can be easily monitored. This system can also be used to assess, for example, the potentially destabilizing effect of a constant power load. Its “negative resistance”, or inverse relationship between the input voltage and current, can be observed in the simulation results by zooming in on a few individual AC cycles.</p> About text formats Tags Three PhasePower Flow AnalysisDelta-Wye TransformerConstant Power LoadsMotor Start-upInduction Motorlamp in-rush currentMechatronics Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
project2 Designer https://explore.partquest.com/node/424522 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/424522"></iframe> Title Description <p>This example three-phase power distribution system uses a variety of load types to create realistic static and transient grid-loading conditions and system asymmetries. These include constant power and variable resistance loads, lamps and motors with complex start-up load current profiles, as well as imbalance in the generator, lines and transformers.</p> <p>The models provide not only the characteristic behavior of each component, but also internally track the power input, output and dissipation, per phase and in total, so that power flow can be easily monitored. This system can also be used to assess, for example, the potentially destabilizing effect of a constant power load. Its “negative resistance”, or inverse relationship between the input voltage and current, can be observed in the simulation results by zooming in on a few individual AC cycles.</p> About text formats Tags Three PhasePower Flow AnalysisDelta-Wye TransformerConstant Power LoadsMotor Start-upInduction Motorlamp in-rush currentMechatronics Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
F_dip Designer https://explore.partquest.com/node/424432 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/424432"></iframe> Title Description About text formats Tags Three PhasePower Flow AnalysisDelta-Wye TransformerConstant Power LoadsMotor Start-upInduction Motorlamp in-rush currentMechatronics Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
project Designer https://explore.partquest.com/node/423138 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/423138"></iframe> Title Description About text formats Tags Three PhasePower Flow AnalysisDelta-Wye TransformerConstant Power LoadsMotor Start-upInduction Motorlamp in-rush currentMechatronics Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of Three Phase Power System - on Sun, 03/21/2021 - 17:09 Designer https://explore.partquest.com/node/423136 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/423136"></iframe> Title Description <p>This example three-phase power distribution system uses a variety of load types to create realistic static and transient grid-loading conditions and system asymmetries. These include constant power and variable resistance loads, lamps and motors with complex start-up load current profiles, as well as imbalance in the generator, lines and transformers.</p> <p>The models provide not only the characteristic behavior of each component, but also internally track the power input, output and dissipation, per phase and in total, so that power flow can be easily monitored. This system can also be used to assess, for example, the potentially destabilizing effect of a constant power load. Its “negative resistance”, or inverse relationship between the input voltage and current, can be observed in the simulation results by zooming in on a few individual AC cycles.</p> About text formats Tags Three PhasePower Flow AnalysisDelta-Wye TransformerConstant Power LoadsMotor Start-upInduction Motorlamp in-rush currentMechatronics Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of TDFS Impedance Stability of Transmission Line Fed LED Driver - Switching - on Sun, 03/21/2021 - 11:01 Designer https://explore.partquest.com/node/423077 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/423077"></iframe> Title Description <p>This example demonstrates the use of the TDFS method (Time Domain Frequency Sweep) to measure impedance stability ratio. The system is a switching DC/DC step-down power converter used for LED lighting, supplied by a battery through a long power cable.</p> <p>The TDFS impedance stability measurement model applies a 0.2A sinusoidal stimulus current at the point where the cable connects to the converter. The voltage at that point, as well as the stimulus current splits (toward the source and the load) are measured, and the associated source and load impedances vs. frequency are computed.</p> <p>The ratio of the source to load impedance is the impedance stability ratio (Tm). Similar to the open-loop frequency response requirement for closed-loop stability, Tm must not have magnitude = 1.0 at phase = 180 degrees, at any frequency.</p> <p>For this system, with a cable length of 400 meters and 8 AWG wire, the results show that the impedance ratio magnitude (green waveform) reaches unity (0 dB) at close to 2 kHz, where the phase (light blue waveform) is approximately 165 degress. This implies a "phase margin" of only 15 degrees, For a longer cable, this margin is further reduced. As shown in the companion example, "Transmission Line Fed LED Driver - Switching", for the cable length = 800 meters the system is unstable.</p> <p>This instability is the result of the "source" impedance (which includes the cable) variation over frequency, interacting with the varying load impedance. Note that at low frequency, the load effectively has a negative impedance, due to the constant power nature of the DC to DC converter.</p> About text formats Tags Buck ConverterConstant Power LoadsSwitching ConverterLEDtransmission lineStep-DownTDFS Impedance Stability Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of TDFS Impedance Stability of Transmission Line Fed LED Driver - Switching - on Sun, 03/21/2021 - 11:01 Designer https://explore.partquest.com/node/423077 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/423077"></iframe> Title Description <p>This example demonstrates the use of the TDFS method (Time Domain Frequency Sweep) to measure impedance stability ratio. The system is a switching DC/DC step-down power converter used for LED lighting, supplied by a battery through a long power cable.</p> <p>The TDFS impedance stability measurement model applies a 0.2A sinusoidal stimulus current at the point where the cable connects to the converter. The voltage at that point, as well as the stimulus current splits (toward the source and the load) are measured, and the associated source and load impedances vs. frequency are computed.</p> <p>The ratio of the source to load impedance is the impedance stability ratio (Tm). Similar to the open-loop frequency response requirement for closed-loop stability, Tm must not have magnitude = 1.0 at phase = 180 degrees, at any frequency.</p> <p>For this system, with a cable length of 400 meters and 8 AWG wire, the results show that the impedance ratio magnitude (green waveform) reaches unity (0 dB) at close to 2 kHz, where the phase (light blue waveform) is approximately 165 degress. This implies a "phase margin" of only 15 degrees, For a longer cable, this margin is further reduced. As shown in the companion example, "Transmission Line Fed LED Driver - Switching", for the cable length = 800 meters the system is unstable.</p> <p>This instability is the result of the "source" impedance (which includes the cable) variation over frequency, interacting with the varying load impedance. Note that at low frequency, the load effectively has a negative impedance, due to the constant power nature of the DC to DC converter.</p> About text formats Tags Buck ConverterConstant Power LoadsSwitching ConverterLEDtransmission lineStep-DownTDFS Impedance Stability Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of Three Phase Power System - on Thu, 03/18/2021 - 18:18 Designer https://explore.partquest.com/node/422357 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/422357"></iframe> Title Description <p>This example three-phase power distribution system uses a variety of load types to create realistic static and transient grid-loading conditions and system asymmetries. These include constant power and variable resistance loads, lamps and motors with complex start-up load current profiles, as well as imbalance in the generator, lines and transformers.</p> <p>The models provide not only the characteristic behavior of each component, but also internally track the power input, output and dissipation, per phase and in total, so that power flow can be easily monitored. This system can also be used to assess, for example, the potentially destabilizing effect of a constant power load. Its “negative resistance”, or inverse relationship between the input voltage and current, can be observed in the simulation results by zooming in on a few individual AC cycles.</p> About text formats Tags Three PhasePower Flow AnalysisDelta-Wye TransformerConstant Power LoadsMotor Start-upInduction Motorlamp in-rush currentMechatronics Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of Three Phase Power System - on Thu, 03/11/2021 - 10:37 Designer https://explore.partquest.com/node/419781 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/419781"></iframe> Title Description <p>This example three-phase power distribution system uses a variety of load types to create realistic static and transient grid-loading conditions and system asymmetries. These include constant power and variable resistance loads, lamps and motors with complex start-up load current profiles, as well as imbalance in the generator, lines and transformers.</p> <p>The models provide not only the characteristic behavior of each component, but also internally track the power input, output and dissipation, per phase and in total, so that power flow can be easily monitored. This system can also be used to assess, for example, the potentially destabilizing effect of a constant power load. Its “negative resistance”, or inverse relationship between the input voltage and current, can be observed in the simulation results by zooming in on a few individual AC cycles.</p> About text formats Tags Three PhasePower Flow AnalysisDelta-Wye TransformerConstant Power LoadsMotor Start-upInduction Motorlamp in-rush currentMechatronics Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
