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690V PQC Industrial Complete Cabinet
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690V PQC Industrial Complete Cabinet
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- Commodity name: 690V PQC Industrial Complete Cabinet
- Commodity ID: 1362032836113747968
- 类型: Industrial automation
- 品牌: Capni
Brand: Zhiyuan New Energy Description: Industrial-grade PQC, primarily used in environments with nonlinear loads, large AC and DC motors, rectification equipment, and rapidly varying loads. Examples include: rolling mills, arc furnaces, medium-frequency furnaces, internal mixers, mine hoists, and electric locomotive power supply systems.
Working principle
Industrial-grade comprehensive power quality compensator (abbreviated as PQC ) Employs modern power electronics technology and is based on high-speed DSP A new type of specialized equipment for power harmonic mitigation and reactive power compensation, developed using digital signal processing technology for devices.
It consists of two main parts: a reference current computation circuit and a compensation current generation circuit. By using external current transformers, the harmonic components and reactive power content in the power grid are detected in real time, generating the reference current. The reference current computation circuit continuously monitors the current flowing in the line, converts the analog current signal into a digital signal, and then sends it to a high-speed digital signal processor ( DSP ) Process the signal to separate harmonics from the fundamental wave, and use pulse-width modulation ( PWM ) The signal form sends a drive pulse to the compensation current generation circuit, driving... IGBT or IPM Power module To control the inverter to generate harmonic currents and reactive currents that meet the required specifications.
Basic components
PQC The system mainly includes the main contactor. KM1 Precharge Contactor KM2、 Precharge resistor R Filter inductor L Voltage-type PWM Rectifier bridge ( VSR ) and DC bus capacitance C Wait.
The system diagram is shown in the figure. 1-2 As shown, the resistor R For the system's precharge resistor, when... KM2 After closing, the system bus capacitor voltage charges slowly. K M1 Control the main circuit while simultaneously connecting the precharge resistor. R Short circuit; An inductor is a power-transfer interface component between power converters and power systems. On the one hand, it serves as an energy-storage element; on the other hand, it filters out high-frequency switching ripple currents. Voltage-type PWM The rectifier bridge is The power conversion component of the PQC, composed of insulated-gate bipolar transistors (IGBTs), employs space vector pulse width modulation (SVPWM) technology to drive the IGBTs and generate a compensation current waveform. The DC capacitor module stores the DC energy produced by the IGBT power conversion module.
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- PQC
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Characteristics of industrial products
Design concept
- Industrial type PQC This product is specially developed by our company for industrial application environments. It adopts a completely new development approach, offering multi-functionality in a single device. Innovatively, it introduces an automatic proportional control mechanism, allowing users to freely configure the ratio of harmonic current to reactive power according to different load conditions.
- Active module vertical structure design. This structural model adopts a large-capacity... IGBT Power devices—selecting the effective value for the device. 3 More than double the rated capacity, with ample safety margins to ensure long-term operation even under heavy load and significant impact. The module employs axial-flow fans for heat dissipation, offering large airflow, sufficient air pressure, and excellent cooling performance. The entire cabinet adopts a bottom-inlet, top-exhaust airflow configuration: axial-flow fans at the top of the cabinet extract air, while dust-proof louvers at the bottom allow fresh air to enter. This design effectively isolates the internal components from the external environment, making it particularly suitable for high-temperature industrial sites and harsh environments—especially those with high dust concentrations. Examples include powder plants, stone-processing plants, tile factories, cement plants, and similar facilities.
Anti-high-voltage distortion
- Applicable to 5%-25% Application in industrial load distribution systems for harmonic voltage distortion rate, with a subtle-level instantaneous response speed and a total response time of less than... 10ms。
Comprehensive compensation, safety and stability
- Harmonic mitigation, inductive and capacitive reactive power compensation—freely select your compensation combination.
- Automatic flow limiting operation and comprehensive fault protection features.
Advanced control strategies and topological structure design
- Adopt LCL Topological structure filtering, when used with output current, does not introduce high frequencies. IGBT Switching harmonic interference is suppressed, and resonance will not occur regardless of the impedance of the on-site power grid system.
Self-diagnosis and self-startup function for faults
- The device is equipped with a self-recovery function that allows it to resume operation automatically after a shutdown caused by factors unrelated to the device itself. Before initiating self-recovery, the device performs an automatic diagnosis of both the external power grid and the device itself; only if the diagnosis is successful will the device restart automatically. If the issue lies with the external power grid, the device will no longer attempt to start up and will transmit a device failure alarm to the host computer, while simultaneously illuminating its own fault indicator light.
Remote IoT monitoring function (optional)
- It can collect data such as three-phase system voltage, current, active power, reactive power, power factor, harmonic content, and harmonic current output from the device, via... GPRS The module is uploaded to the database. Mobile download is supported. APP and web browsing, enabling real-time device monitoring, historical data download, and device startup. / Shutdown and other operations.
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Input
System voltage ( V )
400V AC
System voltage range
± 10%
Frequency (Hz)
50/60 ±5%
Output and Installation Method
Rated current ( Four+A )
Music video
C
100Kvar/40A
100 kVAR/40 A, 200 kVAR/80 A
300 kVAR/120 A, 400 kVAR/160 A
Type
Industrial-grade module
Complete cabinet
Incoming line method
Upstream line
Upstream line / Bottom incoming line / Busbar running through the cabinet top
(The cable entry method for the enclosure must be specified in the contract.)
Performance metrics
Filter rate
≥ 90% ( Within the ordered capacity range, and with harmonic content of the load exceeding the ordered capacity. 30%)
Filtering range
2 to 13 Subharmonics (if you need to address even-order harmonics, please specify when placing your order)
Full response time
≤ 10ms
Instant response time
≤ 100us
Dynamic current
1.2 Rated capacity output of the dual-filter, 1min
Power factor setting compensation
Be equipped with
Inductive or capacitive compensation
Optional
Protection
Overload protection
Automatic rate limiting in 100% Rated output
Other protections
Overvoltage protection, undervoltage protection, overtemperature protection
Operating mode
Single-unit or parallel operation
Okay.
Display and Operation
Display interface
7 Inch touchscreen
Display status
Current, voltage, power, harmonic distortion rate, and more
Operation
Multiple operation mode options, remote or local.
Communication ( RS485 Interface)
Modbus-RTU It features a remote monitoring interface and a backend database, enabling users to conveniently monitor various device operating parameters via internet terminals.
Phase Sequence Adaptive
Be equipped with
Environmental conditions
Protection level
IP20 (Customizable)
Operating ambient temperature
-10 Celsius ~40 Celsius
Storage / Transportation temperature
-40 Celsius ~60 Celsius
Work / Storage humidity
Relative humidity 20~95% No condensation / Relative humidity 10~95%
Altitude
1000m The following (derating required for higher altitudes)
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