参数资料
| 型号： | MC3PHACVPE |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 14/36页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR CONTROLLER 28-DIP |
| 标准包装： | 13 |
| 应用： | AC 电机控制器，3 相 |
| 输出数： | 1 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 28-DIP（0.600"，15.24mm） |
| 供应商设备封装： | 28-PDIP |
| 包装： | 管件 |
| 产品目录页面： | 808 (CN2011-ZH PDF) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页当前第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页
Features
?
Regeneration Control — Regeneration is a process by which stored mechanical energy in the
motor and load is transferred back into the drive electronics, usually as a result of an aggressive
deceleration operation. In special cases where this process occurs frequently (for example,
elevator motor control systems), it is economical to incorporate special features in the motor drive
to allow this energy to be supplied back to the ac mains. However, for most low cost ac drives, this
energy is stored in the dc bus capacitor by increasing its voltage. If this process is left unchecked,
the dc bus voltage can rise to dangerous levels, which can destroy the bus capacitor or the
transistors in the power inverter.
The MC3PHAC incorporates two techniques to deal with regeneration before it becomes a
problem:
14
–
–
Resistive Braking — The DC_BUS pin is monitored at a 5.3 kHz frequency (4.0 kHz when the
PWM frequency is set to 15.9 kHz), and when the voltage reaches a certain threshold, the
RBRAKE pin is driven high. This signal can be used to control a resistive brake placed across
the dc bus capacitor, such that mechanical energy from the motor will be dissipated as heat in
the resistor versus being stored as voltage on the capacitor. In standalone mode, the DC_BUS
threshold required to assert the RBRAKE signal is fixed at 3.85 volts (110 percent of nominal)
where nominal is defined to be 3.5 volts. In PC master software mode, this threshold can be
set to any value between 0 volts (0 percent of nominal) and greater than 5 volts (143 percent
of nominal) and can be changed at any time.
Automatic Deceleration Control — When decelerating the motor, the MC3PHAC attempts to
use the specified acceleration value for deceleration as well. If the voltage on the DC_BUS pin
reaches a certain threshold, the MC3PHAC begins to moderate the deceleration as a function
of this voltage, as shown in Figure 7 . The voltage range on the DC_BUS pin from when the
deceleration begins to decrease, to when it reaches 0, is 0.62 volts. In standalone mode, the
DC_BUS voltage where deceleration begins to decrease is fixed at 3.85 volts (110 percent of
nominal) where nominal is defined to be 3.5 volts. In PC master software mode, this threshold
can be set to any value between 0 volts (0 percent of nominal) and greater than 5 volts (143
percent of nominal) and can be changed at any time.
ACCELERATION INPUT
BUS VOLTAGE
BEGIN MODERATING DECEL
(LEVEL IS PROGRAMMABLE
IN PC MASTER SOFTWARE MODE)
Figure 7. Deceleration as a Function of Bus Voltage
MC3PHAC Monolithic Intelligent Motor Controller, Rev. 2
Freescale Semiconductor
相关PDF资料 |
PDF描述 |
|---|---|
| MC44604PG | IC REG CTRLR FLYBACK PWM 16-DIP |
| MC44605PG | IC REG CTRLR FLYBK ISO PWM 16DIP |
| MC44608P75G | IC REG CTRLR FLYBK ISO PWM 8-DIP |
| MC7810ECDTX | IC REG LDO 10V 1A DPAK |
| MC7818CD2TR4G | IC REG LDO 18V 1A D2PAK |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC3S12C128 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:16-Bit Microcontroller |
| MC3S12C32 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:16-Bit Microcontroller |
| MC3S12C64 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:16-Bit Microcontroller |
| MC3S12C96 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:16-Bit Microcontroller |
| MC3S12GC32 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:16-Bit Microcontroller |
发布紧急采购，3分钟左右您将得到回复。