24V/1.5kW两级DCDC直流电源柜 | 350-450V降至24V·90%高效·恒压输出·远程APP监控 | 24V/1.5kW Two-Stage DC-DC Power Cabinet | 350-450V to 24V · 90% Efficiency · CV Output · Remote APP Monitor
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出品方：稳利达电力电子 | Wenlida Power Electronics |
项目简介 | Project Introduction
本项目为24V/1.5kW两级DCDC直流电源柜，由稳利达电力电子提供整套两级降压变换与配套低压直流供电解决方案。系统由两级DCDC模块构成：**级DCDC1将350-450Vdc直流输入降至额定200Vdc母线（≤5A输入、≤8A母线，效率98%，支持恒压/恒流/恒功率）；第二级DCDC2将200Vdc母线进一步降至额定24Vdc负载输出（≤7.5A输入、≤62.5A输出，效率90%，恒压输出），整机额定功率1.5kW。设备为涡轮机械等精密工业设备提供稳定的24V直流控制电源，配置触摸屏（支持远程监视，并提供电脑端/手机端APP）、RS485（Modbus RTU）与以太网（Modbus TCP）双通道通讯，保护完备，故障解除后自动恢复运行，强制风冷、IP20防护。
This project is a 24V/1.5kW two-stage DC-DC power cabinet, delivered by Wenlida Power Electronics as a complete two-step step-down conversion and auxiliary low-voltage DC supply solution. The system consists of two DC-DC stages: Stage 1 (DCDC1) steps down the 350-450Vdc DC input to a rated 200Vdc bus (≤5A input, ≤8A bus, 98% efficiency, supporting CV/CC/CP); Stage 2 (DCDC2) further steps down the 200Vdc bus to a rated 24Vdc load output (≤7.5A input, ≤62.5A output, 90% efficiency, constant-voltage), with a total rated power of 1.5kW. The unit supplies a stable 24V DC control power for precision industrial equipment such as turbomachinery. It features a touch screen (remote monitoring, with PC / mobile APP), dual-channel RS485 (Modbus RTU) and Ethernet (Modbus TCP) communication, comprehensive protections with auto-recovery, forced air cooling and IP20 protection.
系统拓扑说明 | System Topology Description
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图1：系统拓扑图 | Figure 1: System Topology Diagram |
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图2：24V/1.5kW两级DCDC电源柜应用场景（见下方配图）| Figure 2: 24V/1.5kW two-stage DC-DC power cabinet application scenario (see image below) |
图2：24V/1.5kW两级DCDC电源柜应用场景 | Figure 2: 24V/1.5kW two-stage DC-DC power cabinet application scenario
整套系统配置10寸本地触摸屏，供客户监控数据和触摸操作；提供一路RS485接口，支持遥控、遥测、遥调功能。350-450Vdc直流输入经DCDC1降至200Vdc中间母线，再经DCDC2降压为24Vdc向负载供电；所有电缆和信号线均采用底部下进线、下出线方式。
The system is equipped with a 10-inch local touch screen for on-site data monitoring and touch operation, and one RS485 port for remote telecontrol, telemetry and tele-adjustment. The 350-450Vdc DC input is stepped down by DCDC1 to a 200Vdc intermediate bus, then by DCDC2 to 24Vdc for the load. All power and signal cables enter and exit from the bottom of the cabinet.
完整全套参数表 | Complete Parameter Tables
表1 DCDC1（母线级）电气参数 | Table 1 DCDC1 (Bus Stage) Electrical Parameters
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序号 No. |
电气类目 Category |
详细类目 Item |
规格 Specification |
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1 |
直流电压 DC Voltage |
母线侧 / 输入侧 Bus / Input |
额定200Vdc / 350-450Vdc |
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2 |
直流电流 DC Current |
母线侧 / 输入侧 Bus / Input |
≤8A / ≤5A |
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3 |
转换效率 Efficiency |
HV 700V / LV 500V (test) |
98% (lab conditions) |
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4 |
额定功率 Rated Power |
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1.5kW |
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5 |
工作模式 Operation Mode |
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CV / CC / CP (恒压输出) |
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6 |
电压稳定度 Voltage Stability |
静态 / 动态 Static / Dynamic |
±1% / ±3% |
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7 |
电流稳定度 Current Stability |
静态 / 动态 Static / Dynamic |
±1% / ±3% |
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8 |
通信接口 Communication |
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RS485 isolated (Modbus RTU); CAN2.0A/B isolated (up to 1M/s) |
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9 |
供电方式 Power Supply |
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AC220V |
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10 |
保护 Protection |
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HV/LV over-/under-voltage, over-current, over-temperature, communication; auto-recovery |
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11 |
尺寸 / 重量 Dimension / Weight |
W×D×L |
250 × 500 × 154 mm / 20kg |
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12 |
散热方式 Cooling |
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Air cooling |
表2 DCDC2（负载级）电气参数 | Table 2 DCDC2 (Load Stage) Electrical Parameters
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序号 No. |
电气类目 Category |
详细类目 Item |
规格 Specification |
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1 |
直流电压 DC Voltage |
输入侧 / 输出侧 Input / Output |
额定200Vdc / 额定24Vdc |
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2 |
直流电流 DC Current |
输入侧 / 输出侧 Input / Output |
≤7.5A / ≤62.5A |
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3 |
转换效率 Efficiency |
HV 200V / LV 24V |
90% (lab conditions) |
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4 |
额定功率 Rated Power |
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1.5kW |
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5 |
工作模式 Operation Mode |
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恒压 Constant Voltage |
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6 |
电压稳定度 Voltage Stability |
静态 / 动态 Static / Dynamic |
±1% / ±3% |
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7 |
电流稳定度 Current Stability |
静态 / 动态 Static / Dynamic |
±1% / ±3% |
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8 |
尺寸 / 重量 Dimension / Weight |
L×W×H |
250 × 127 × 40.5 mm / 1.8kg |
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9 |
操作方式 Control |
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Auto or communication-based control |
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10 |
散热方式 Cooling |
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Air cooling |
表3 整机规格参数 | Table 3 Complete Unit Specifications
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端口 Port |
项目 Item |
参数 Parameter |
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直流输入接口 |
电压范围 Voltage (Vdc) |
350-450 |
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**大电流 Max. Current (A) |
5 |
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额定功率 Rated Power (kW) |
1.5 |
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负载接口 |
电压范围 Voltage (Vdc) |
额定 24 |
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**大电流 Max. Current (A) |
62.5 |
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额定功率 Rated Power (kW) |
1.5 |
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整机基本参数 |
工作温度范围 Operating Temp. (℃) |
-20 ~ +55 (derate above 45℃) |
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相对湿度 Relative Humidity |
0 ~ 90%, non-condensing |
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**工作海拔 Max. Altitude (m) |
2000 (derate above 2000m) |
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冷却方式 Cooling |
Forced air cooling |
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显示 Display |
Touch screen (remote monitor; PC / mobile APP) |
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通讯方式 Communication |
RS485 (Modbus RTU) / Ethernet (Modbus TCP) |
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辅助供电 Aux. Power |
AC220V (User-supplied) |
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防护等级 Protection Class |
IP20 |
设备搬运说明 | Equipment Handling Instruction
机柜底座开有两个方形孔，搬运时叉车两根货叉通过方形孔叉入机柜底部，移动过程中需保证缓慢、平稳，避免设备磕碰倾倒。
Two square holes are reserved at the cabinet base. Insert two forklift forks through the square holes to the cabinet bottom during handling. Move slowly and steadily to prevent collision or tipping-over.
应用场景 | Application Scenarios
典型应用 | Typical Applications
? 涡轮机械、发电机组配套24V直流控制电源
? 精密工业设备、控制柜低压辅助供电
? 350-450V高压直流降压至24V安全电压输出
? 工业自动化、仪器仪表供电
? 分布式储能、直流母线配套低压变换
? 24V DC control power for turbomachinery and generator sets
? Low-voltage auxiliary supply for precision industrial equipment and control cabinets
? Step-down from 350-450V high-voltage DC to safe 24V output
? Industrial automation and instrumentation power supply
? Low-voltage conversion for distributed storage and DC buses
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定制说明：稳利达电力电子本系列产品支持定制开发，可根据输入/输出电压、输出电流、两级拓扑与远程监控方式灵活配置，适配不同精密设备的低压直流供电需求。 Customization Note: Customization available by Wenlida Power Electronics. Input/output voltage, output current, two-stage topology and remote-monitoring mode can be flexibly configured according to site conditions to meet various precision-equipment low-voltage DC supply requirements. |
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