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Copy of Power MOSFET Switching Design - BLDC Motor Use-Case - on Tue, 12/01/2020 - 17:56 Designer https://explore.partquest.com/node/385866 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/385866"></iframe> Title Description <p>This design is similar to the design "Ideal Switching Design for Moog PMSM - BLDC Motor Use-Case", but the ideal switches in the inverter are replaced with "Datasheet" Power MOSFET models. These models are calibrated to match the datasheet specified characteristics of an STW45NM50 device. This replacement required the conversion to the digital signals used to control the switch states, to actual gate voltages. So representative models of the necessary gate drivers were also added.</p> <p>In addition, a "hot part monitor" model was added to one of the Power MOSFETs. This models the datasheet specified "Rthj_amb" (0.32 degrees C per Watt), in order to predict the internal junction temperature during different phases of inverter operation. A thermal time-constant of 1 ms was assumed, which may be quite unrealistic. It is possible to add much higher fidelity thermal network models of the heat transfer path if valid parameters are given.</p> <p>Finally, one of the low-pass filters used in the current sense path was changed to reflect a possible circuit implementation using op-amps. This is to show the ability to move seamlessly between ideal signal-flow (or continuous transfer function block) modeling to circuit implementation modeling, anywhere in a system design.</p> <p>You can also see a version of this design that uses the manufacturer provided SPICE model for the Power MOSFET: "STW45NM50 MOSFET Switching Design for Moog PMSM - BLDC Motor Use-Case"</p> About text formats Tags PMSMBLDCPWMSVMThermal Package model Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of Fan System with 3-Phase Induction Motor and Power MOSFET Drive - on Tue, 12/01/2020 - 17:42 Designer https://explore.partquest.com/node/385864 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/385864"></iframe> Title Description <p>Induction Machine (IM) and PWM Drive circuit, with mechanical fan load.</p> About text formats Tags PWMpower MOSFETInduction MotorMotor Drive Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Fan System with 3-Phase Induction Motor and Power MOSFET Drive Designer https://explore.partquest.com/node/383209 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/383209"></iframe> Title Description <p>Induction Machine (IM) and PWM Drive circuit, with mechanical fan load.</p> About text formats Tags PWMpower MOSFETInduction MotorMotor Drive Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Fan System with 3-Phase Induction Motor and Power MOSFET Drive Designer https://explore.partquest.com/node/383209 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/383209"></iframe> Title Description <p>Induction Machine (IM) and PWM Drive circuit, with mechanical fan load.</p> About text formats Tags PWMpower MOSFETInduction MotorMotor Drive Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of PID Speed Control Loop - Switching compact - on Sun, 11/15/2020 - 19:42 Designer https://explore.partquest.com/node/378634 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/378634"></iframe> Title Description <p>This example shows a more detailed circuit- and logic-level implementation of the PID Control Loop shown in the companion example, “PID Speed Control Loop – Continuous”. The ideal motor drive block of the “Continuous” version is expanded here, to include both a H-bridge motor drive, and also the digital logic necessary for converting the continuous PID controller output into the desired PWM signals that are distributed to drive the gates of the power MOSFET switches. The MOSFET model was calibrated to represent an IRF3710, using only information published on the manufacturer’s datasheet.</p> <p>The rest of the system, including the PID block-diagram controller, the mechanical fan load and the DC Motor characterized to represent an FRC CIM Motor, are the same as in the Continuous version. While the simulation time for this switching version is significantly longer, more detailed information about practical circuit performance and component sizing is available. For example, the fan speed step response is somewhat different from the conceptual design, because of the losses in the MOSFETs under high current conditions, as well as voltage drop in the battery. Also, information regarding component stress levels within the “datasheet specified” MOSFETs and Diodes is provided.</p> About text formats Tags PID ControlDC motorFRCCIM MotorPWMMOSFET H-BridgeIRF3710component stress Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of PID Speed Control Loop - Switching compact - on Sun, 11/15/2020 - 19:39 Designer https://explore.partquest.com/node/378633 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/378633"></iframe> Title Description <p>This example shows a more detailed circuit- and logic-level implementation of the PID Control Loop shown in the companion example, “PID Speed Control Loop – Continuous”. The ideal motor drive block of the “Continuous” version is expanded here, to include both a H-bridge motor drive, and also the digital logic necessary for converting the continuous PID controller output into the desired PWM signals that are distributed to drive the gates of the power MOSFET switches. The MOSFET model was calibrated to represent an IRF3710, using only information published on the manufacturer’s datasheet.</p> <p>The rest of the system, including the PID block-diagram controller, the mechanical fan load and the DC Motor characterized to represent an FRC CIM Motor, are the same as in the Continuous version. While the simulation time for this switching version is significantly longer, more detailed information about practical circuit performance and component sizing is available. For example, the fan speed step response is somewhat different from the conceptual design, because of the losses in the MOSFETs under high current conditions, as well as voltage drop in the battery. Also, information regarding component stress levels within the “datasheet specified” MOSFETs and Diodes is provided.</p> About text formats Tags PID ControlDC motorFRCCIM MotorPWMMOSFET H-BridgeIRF3710component stress Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
PMSM Motor and PWM Drive Designer https://explore.partquest.com/node/376794 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/376794"></iframe> Title Description About text formats Tags PMSMBLDCPWM Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Power MOSFET Switching Design - BLDC Motor Use-Case Designer https://explore.partquest.com/node/368362 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/368362"></iframe> Title Description <p>This design is similar to the design "Ideal Switching Design for Moog PMSM - BLDC Motor Use-Case", but the ideal switches in the inverter are replaced with "Datasheet" Power MOSFET models. These models are calibrated to match the datasheet specified characteristics of an STW45NM50 device. This replacement required the conversion to the digital signals used to control the switch states, to actual gate voltages. So representative models of the necessary gate drivers were also added.</p> <p>In addition, a "hot part monitor" model was added to one of the Power MOSFETs. This models the datasheet specified "Rthj_amb" (0.32 degrees C per Watt), in order to predict the internal junction temperature during different phases of inverter operation. A thermal time-constant of 1 ms was assumed, which may be quite unrealistic. It is possible to add much higher fidelity thermal network models of the heat transfer path if valid parameters are given.</p> <p>Finally, one of the low-pass filters used in the current sense path was changed to reflect a possible circuit implementation using op-amps. This is to show the ability to move seamlessly between ideal signal-flow (or continuous transfer function block) modeling to circuit implementation modeling, anywhere in a system design.</p> <p>You can also see a version of this design that uses the manufacturer provided SPICE model for the Power MOSFET: "STW45NM50 MOSFET Switching Design for Moog PMSM - BLDC Motor Use-Case"</p> About text formats Tags PMSMBLDCPWMSVMThermal Package model Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of Fan System with 3-Phase Induction Motor and Power MOSFET Drive - on Wed, 10/28/2020 - 10:05 Designer https://explore.partquest.com/node/366938 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/366938"></iframe> Title Description <p>Induction Machine (IM) and PWM Drive circuit, with mechanical fan load.</p> About text formats Tags PWMpower MOSFETInduction MotorMotor Drive Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
Copy of Fan System with 3-Phase Induction Motor and Power MOSFET Drive - on Wed, 10/28/2020 - 10:05 Designer https://explore.partquest.com/node/366938 <iframe allowfullscreen="true" referrerpolicy="origin-when-cross-origin" frameborder="0" width="100%" height="720" scrolling="no" src="https://explore.partquest.com/node/366938"></iframe> Title Description <p>Induction Machine (IM) and PWM Drive circuit, with mechanical fan load.</p> About text formats Tags PWMpower MOSFETInduction MotorMotor Drive Select a tag from the list or create your own.Drag to re-order taxonomy terms. License - None -
