Re: Speed Motor Design Software Crack 24
Rubie Mccloughan
Simcenter SPEED allows engineers to rapidly analyze motor designs using analytical simulations. Simcenter SPEED provides access to theoretical and physical models of most main electric machine classes along with their drives.
Model the complexity
Simcenter SPEED supports several e-machine types including synchronous motors, single, 2- and 3-phase machines, induction machines, switched reluctance motors, direct current machines, wound-field commutator machines and axial flux machines.
Go faster
Simcenter SPEED includes all the necessary theoretical and physical models for a rapid e-machine design with a flexible approach. Analytical methods deliver almost instantaneous results, making it attractive for use in design exploration or what-if studies.
Stay integrated
Simcenter SPEED links to several general-purpose electromagnetic simulation solutions, including Simcenter MAGNET as well as to multiphysics solutions such as Simcenter STAR-CCM+. In many applications, the electric machine is embedded in a complex system. For such use cases, Simcenter SPEED supports export of data files to system simulation tools such as Simcenter Amesim. Simcenter SPEED includes a built-in graphical interface to enable design exploration with HEEDS.
Quickly design, assess, review and develop with the Simcenter SPEED analytical approach. With easy to modify parameters and full integration with Simcenter HEEDS, you can run an intelligent design exploration that considers thousands of possibilities in a fraction of the time that it would take to run a set of Finite Element (FE) simulations.
Simcenter SPEED currently supports six e-machine types via its design templates: synchronous, induction, switched reluctance, brushed PM-DC, wound-field commutator and axial flux. All templates are fully parameterized allowing for easy modification and automatically scaling via the initial sizing function.
Test your design with varied materials quickly with easy access to our database of materials. Our database includes steels, magnets and brushes. It can be edited, or you can create your own materials. Quickly check any material and review various charts, such as B/H and V/I curves.
Abstract:Different from the design of conventional permanent magnet (PM) motors, high-speed motors are primarily limited by rotor unbalanced radial forces, rotor power losses, and rotor mechanical strength. This paper aimed to propose a suitable PM motor with consideration of these design issues. First, the rotor radial force is minimized based on the selection of stator tooth numbers and windings. By designing a stator with even slots, the rotor radial force can be canceled, leading to better rotor strength at high speed. Second, rotor power losses proportional to rotor frequency are increased as motor speed increases. A two-dimensional sensitivity analysis is used to improve these losses. In addition, the rotor sleeve loss can be minimized to less than 8.3% of the total losses using slotless windings. Third, the trapezoidal drive can cause more than a 33% magnet loss due to additional armature flux harmonics. This drive reflected loss is also mitigated with slotless windings. In this paper, six PM motors with different tooth numbers, stator cores, and winding layouts are compared. All the design methods are verified based on nonlinear finite element analysis (FEA).Keywords: high-speed motor; permanent magnet motor; variable-frequency drive
Global efforts to reduce power consumption are only increasing, with many countries requiring that home appliances, like those shown in Figure 1, meet efficiency standards set by organizations such as the China Institute of Standards (CNIS), Energy Star in the United States and Blue Angel in Germany. To meet these standards, system designers are increasingly moving away from simple, easy-to-use, single-phase AC induction motor-based designs to those using more power-efficient, low-voltage brushless-DC (BLDC) motors. Designers of small home appliances like vacuum robots are also transitioning many of their systems to more advanced BLDC motors to achieve longer lifetimes and quieter operation. Simultaneously, advancements in permanent magnet technology are simplifying the manufacturing of BLDC motors, reducing system size while delivering the same torque (load), with the added benefits of higher efficiency and quieter systems.
A code-free motor driver includes a built-in control commutation algorithm that can eliminate motor control software development, maintenance and qualification. These motor drivers typically take feedback from the motor, such as Hall signals or motor-phase voltage and current signals; compute complex control equations in real-time to determine the next motor driving state; and give out pulse-width modulation signals for analog front-end components such as the gate driver or metal-oxide semiconductor field-effect transistor (MOSFET) (see Figure 2).
Using a motor driver for real-time control that integrates sensorless control, like our MCF8316A motor driver with field-oriented control (FOC), can increase system reliability and lower total system cost by eliminating the need for Hall-effect sensors in the motor. A code-free motor driver also manages critical functions, such as motor fault detection, and implements protection mechanisms to make the overall system design more reliable. These devices can come with pre-certified control algorithm implementations from certification bodies such as Underwriters Laboratories, enabling original equipment manufacturers to reduce design time for their home appliances.
Building hardware for a BLDC system can be overwhelming for many system designers. A typical system requires gate drivers, MOSFETs, current-sense amplifiers, voltage sensing comparators and analog-to-digital converters. Most systems require a dedicated power architecture, including devices such low-dropout regulators or DC/DC step-down regulators to power all of the components on the board. An integrated BLDC driver combines all of these components and delivers a compact, yet easy-to-use solution, as shown in Figure 4.
Motor drivers with integrated control include protection features such as over-current and over-voltage protection for MOSFETs as well as temperature monitoring, making it easy for designers to deliver powerful solutions. For motor applications that use less than 70 W, such as vacuum robots, residential ceiling fans or pumps used in washing machines, you can choose devices with integrated MOSFETs to further reduce board space. The MCF8316A and MCT8316A devices support up to 8-A peak current for 24-V applications. For high-power applications, you can place power MOSFETs on the board with the gate driver and motor control integrated into one chip.
The concepts discussed in this article can help accelerate system design cycles while also delivering smaller and smarter BLDC motor systems. Code-free, integrated sensorless control BLDC motor drivers such as the MCF8316A and MCT8316A can help you quickly design optimized, high-performing real-time control systems. These devices can deliver as much as 70 W of power for 24-V applications. With integrated intelligent control techniques, both motor drivers are easy to tune, enable high-performance and reliable system solutions, and are great options to consider as you look to build your next low-voltage, energy-efficient BLDC-based system.
The figure below shows the general layout of both the Permanent Magnet motor (on the left) and the induction motor (on the right). In the permanent magnet design, the rotor contains a series of magnets either internal or external to the OD of the rotor. The stator is wound with copper wire creating a magnetic field that interacts with the rotors permanent magnets resulting in rotation and torque. Compare this to the induction motor where rotor and stator are traditionally stamped lamination steel with the motor windings only on the stator which induces an opposing magnetic field in the rotor. This interaction results in rotational torque.
Modern high torque motors whether permanent magnet or induction design use three-phase applied current. The three-phase design offers inherently better efficiency and is also self-starting. If the motor is designed to operate at a fixed rotational speed, then the number of stator poles can be adjusted to give the desired speed at the typical fixed frequency of 50 or 60 Hz. For these types of applications, the laminated induction motor is probably the most frequently chosen alternative. However, what if you want to have a variable speed motor? In this configuration, you would need to incorporate a variable frequency power supply to facilitate the variable speed. Although an induction motor would work, in this design, the permanent magnet design offers enhanced performance with greater flexibility.
The fine details of electric motor design are more complex than described below, but this is a great head start for those weighing their options between an induction and permanent magnet motor design.