| Version 4.5 (R2007b) SimPowerSystems™ Software Release Notes | |
This table summarizes what's new in Version 4.5 (R2007b):
| New Features and Changes | Version Compatibility Considerations | Fixed Bugs and Known Problems | Related Documentation at Web Site |
|---|---|---|---|
Yes | Yes—Details labeled as Compatibility Considerations within descriptions of new features and changes, below. See also Summary. | Bug
Reports | No |
New features and changes introduced in this version are
A new block, Battery, has been added to the Electrical Sources library. It implements a generic battery that models most popular battery types, such as Nickel-Metal-Hybride, Lead-Acid, Lithium-Ion, and Nickel-Cadmium. User-Defined Battery type allows you to modify detailed parameters to represent any particular discharge characteristics.
The Hybrid Electric Vehicle (HEV) Power Train demo (power_HEV_powertrain), which was introduced in Version 4.4 (R2007a) and shows a multi-domain simulation of a HEV power train based on SimPowerSystems™ and SimDriveline™ blocks, has been modified to use the Battery block. It is now called Hybrid Electric Vehicle (HEV) Power Train Using Battery Model.
A new block, Stepper Motor, has been added to the Machines library. Depending on the motor configuration specified by the Motor type parameter, this block models:
A two- or four-phase permanent magnet or hybrid stepper motor
A three-, four-, or five-phase variable reluctance stepper motor
Three new transformer blocks have been added to the Elements library:
Grounding Transformer implements a transformer that is used to provide a neutral in a three-phase, three-wire system. The transformer consists of three two-winding transformers connected in a zigzag. The nominal voltage of each of the six windings is Vn/3.
Three-Phase Transformer Inductance Matrix Type (Two Windings) represents inductive coupling between windings located on different phases of a three-limb or a five-limb core. It also allows modeling of a three-phase transformer built with three single-phase units (no coupling between phases). The transformer R L parameters are obtained from no-load excitation tests and short-circuit tests in positive- and zero-sequence. When core type is specified as Three-limb or five-limb core, the transformer is modeled by 9 coupled windings; otherwise, it is modeled by 3 sets of 2 coupled windings (Z0=Z1).
Three-Phase Transformer Inductance Matrix Type (Three Windings) represents coupling between windings located on different phases of a three-limb or a five-limb core. It also allows modeling of a three-phase transformer built with three single-phase units (no coupling between phases). The transformer R L parameters are obtained from no-load excitation tests and short-circuit tests in positive- and zero-sequence. When core type is specified as Three-limb or five-limb core, the transformer is modeled by 9 coupled windings; otherwise, it is modeled by 3 sets of 3 coupled windings (Z0=Z1).
A new measurement option, All pi-section voltages and currents, is available for the PI Section Line block. It allows you to measure voltages and currents at the start and end of each pi-section.
The following demos have been added in Version 4.5:
Demo Name | Description |
Ni-MH Battery Model | Demonstration of the battery model during charge and discharge process. The demo models a 200 V, 6.5 Ah Ni-MH battery. |
Stepper Motor Drive | Demonstration of a hybrid stepper motor drive. The parameters are those of a small stepper motor (size 23). |
D-STATCOM (Average Model) | In the average model of a Distribution STATCOM, the IGBT Voltage-Sourced Converters (VSC) are represented by equivalent voltage sources generating the AC voltage averaged over one cycle of the switching frequency. This model does not represent harmonics, but the dynamics resulting from the control system and power system interaction are preserved. This model allows using much larger time steps (typically 40-50 microseconds), thus allowing simulations of several seconds. |
D-STATCOM (Detailed Model) | The detailed model of a Distribution STATCOM includes detailed representation of power electronic IGBT converters. In order to achieve an acceptable accuracy with the 1680 Hz switching frequency used in this demo, the model must be discretized at a relatively small time step (5 microseconds). This model is well suited for observing harmonics and control system dynamic performance over relatively short periods of times (typically hundreds of milliseconds to one second). |
UPFC (Detailed Model) | Detailed model of a 48-pulse, GTO-based Unified Power Flow Controller (500 kV, 100 MVA). |
In Version 4.5 (R2007b), power_hysteresis is the new name for the old psbhysteresis command. You use it exactly the same way you would use the psbhysteresis command.
Currently, if you issue the psbhysteresis command, it will automatically redirect to its new name, power_hysteresis. However, it is recommended that you update your scripts and use the new command name going forward.
| Version 4.6 (R2008a) SimPowerSystems™ Software | Version 4.4 (R2007a) SimPowerSystems™ Software | |
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